- Linaro-acpi - lists.linaro.org

by Tomasz Nowicki

Hi Yi, I prepared couple of pointers for you. - wiki page about APEI which use SCI mechanism for x86: https://wiki.linaro.org/LEG/Engineering/Kernel/ACPI/EINJ - since there is no SCI for ARM we added to our acpi git tree commit which simulates SCI behaviour for test purposes: ACPI: Enable SCI_EMULATE to manually simulate physical hotplug testing You can find SCI emulation usage example on wiki page above. - JIRA card description which gives brief description of GPIO signalled events idea for ACPI Hardware Reduced profile: https://cards.linaro.org/browse/CARD-756 Let me know if you will have any questions. Tomasz

11 years, 7 months

2
1
0 0

[RFC PATCH v2 0/4] Introducing the Grand Unified Firmware Interface

by al.stone＠linaro.org

From: Al Stone <al.stone(a)linaro.org> These patches are experimental; they do actually compile and they even seem to execute correctly. They are by no means complete. The reason for posting them is really just to stir some discussion and see if this is a truly crazy idea or if it has some potential for easing the ACPI transition. These patches introduce GUFI: the Grand Unified Firmware Interface. Okay, yes, it is a silly name. I didn't spend a lot of time on it. What I'm most interested in is the idea and whether it is worth pursuing further, and whether or not there are better ways to do this if it does make sense. The idea is very simple: introduce a shim layer that looks like a merge of some sort between ACPI and FDT functionality in the kernel. In that shim layer, make it possible for a driver to make a single call to a function, and with that call, retrieve configuration information stored in either ACPI tables or a DT. Further, allow the kernel to specify which has priority -- i.e., search through ACPI tables, and then through FDT if data is not found, or vice versa -- or which is exclusive, either ACPI or FDT only. Why would I do this? As a kernel developer, this allows me to make changes in the direction of either FDT or ACPI as quickly or as slowly as I want to. Most of my config can be in FDT and I can then piecemeal convert to ACPI as I figure out ASL and/or any driver changes that may be needed. Secondly, if I do this well, the changes to convert from FDT to ACPI *should* be very small; from ACPI to FDT may be more difficult but over time that can likely be improved as well. If someone was clever, they could even add support for a specific board file and gradually convert that to FDT or ACPI. Third, in the really, really long term, maybe someone comes up with yet another hardware configuration description format that is so cool it provides sharks with laser beams on their heads and *everyone* wants to convert to it. With this layer in place, perhaps we can smooth even that transition by abstracting out the config info that's needed and the API to retrieve it. So, what do you think? Changes in v2: -- Took a completely different approach to the overall structure based on feedback from Tomasz Nowicki. -- Changed an assumption: originally, I wanted to absolutely minimize the changes in API between OF and GUFI. That assumption has been dropped in favor of defining a more general API that will attempt to merge the best of ACPI and OF. -- The changes to vexpress-sysreg are for only one OF call for now. The previous version was more complete, but this version works. Over time, further changes will be made as each call is converted to this newer API. Al Stone (4): GUFI: add kernel config options for GUFI GUFI: introduce the basic framework ARM64: GUFI: add setup_arch() call to gufi_init() GUFI: MFD: initial change to use one GUFI API call in vexpress-sysreg arch/arm64/Kconfig | 6 - arch/arm64/kernel/setup.c | 5 + drivers/Kconfig | 2 + drivers/gufi/Kconfig | 44 +++++++ drivers/gufi/Makefile | 11 ++ drivers/gufi/acpi_protocol.c | 35 +++++ drivers/gufi/acpi_protocol.h | 37 ++++++ drivers/gufi/core.c | 296 ++++++++++++++++++++++++++++++++++++++++++ drivers/gufi/of_protocol.c | 44 +++++++ drivers/gufi/of_protocol.h | 37 ++++++ drivers/mfd/vexpress-sysreg.c | 5 +- include/linux/gufi.h | 62 +++++++++ 12 files changed, 577 insertions(+), 7 deletions(-) create mode 100644 drivers/gufi/Kconfig create mode 100644 drivers/gufi/Makefile create mode 100644 drivers/gufi/acpi_protocol.c create mode 100644 drivers/gufi/acpi_protocol.h create mode 100644 drivers/gufi/core.c create mode 100644 drivers/gufi/of_protocol.c create mode 100644 drivers/gufi/of_protocol.h create mode 100644 include/linux/gufi.h -- 1.8.4.2

11 years, 7 months

1
4
0 0

[PATCH v6 0/6] Hardware Reduced Mode Cleanup for ACPI

by al.stone＠linaro.org

From: Al Stone <al.stone(a)linaro.org> This series of patches starts with Hanjun's patch to create a kernel config item for CONFIG_ACPI_REDUCED_HARDWARE [0]. Building on that, I then reviewed all of the code that touched any of several fields in the FADT that the OSPM is supposed to ignore when ACPI is in Hardware Reduced mode [1]. Any time there was a use of one of the fields to be ignored, I evaluated whether or not the code was implementing Hardware Reduced mode correctly. Similarly, for each the flags in the FADT flags field that are to be ignored in Hardware Reduced mode, the kernel code was again scanned for proper usage. The remainder of the patches are to fix all of the situations I could find where the kernel would not behave correctly in this ACPI mode. These seem to work just fine on the RTSM model for ARMv7, both with and without ACPI enabled, and with and without ACPI_REDUCED_HARDWARE enabled; similarly for the FVP model for ARMv8. The patches for ACPI on ARM hardware have been submitted elsewhere but they presume that reduced HW mode is functioning correctly. In the meantime, there's no way I can think of to test all possible scenarios so feedback would be greatly appreciated. [0] List at https://wiki.linaro.org/LEG/Engineering/Kernel/ACPI/AcpiReducedHw#Section_5… [1] Please see the ACPI Specification v5.0 for details on Hardware Reduced mode (sections 3.11.1, 4.1, 5.2.9, at a minimum). Changes for v6: -- Allow selection of CONFIG_ACPI_REDUCED_HARDWARE_ONLY to be more architecture-independent, but make it harder to accidentally enable. -- Make sure that ACPI ECs do not use the ACPI global lock when in hardware reduced mode (I had missed this case in earlier reviews of the kernel tree). Changes for v5: -- Clarify that if the kernel config option to build ACPI hardware reduced mode is used, it builds a hardware reduced *only* kernel (i.e., full legacy ACPI mode will no longer work). Changes for v4: -- Given the current state of ACPICA, disable CONFIG_ACPI_REDUCED_HARDWARE for use on anything other than ARM. -- Replaced #ifdefs with run-time checking for hardware reduced mode, whenever possible Changes for v3: -- Modified enabling ACPI_REDUCED_HARDWARE in ACPICA when using kernel config item CONFIG_ACPI_REDUCED_HARDWARE; now consistent with ACPICA code base where needed -- Enable X86 for CONFIG_ACPI_REDUCED_HARDWARE -- Minimize bus master reload patching -- Remove unneeded patch for dmi_check_system() (was 4/6) -- Correct the patch for removing unneeded map/unmap of FADT fields Changes for v2: -- Remove patch that was outside of reduced HW mode changes -- Simplify CONFIG_ACPI_REDUCED_HARDWARE in Kconfig -- Simplify use of CONFIG_ACPI_REDUCED_HARDWARE in #ifdefs -- Ensure changelogs are present -- Combine and simplify previous patches 8 & 10 Al Stone (6): ACPI: introduce CONFIG_ACPI_REDUCED_HARDWARE_ONLY to enforce this ACPI mode ACPI: bus master reload not supported in reduced HW mode ACPI: HW reduced mode does not allow use of the FADT sci_interrupt field ACPI: in HW reduced mode, using FADT PM information is not allowed. ACPI: do not map/unmap memory regions for FADT entries in reduced HW mode ACPI: make sure ECs do not use the ACPI global lock drivers/acpi/Kconfig | 12 ++++++++++++ drivers/acpi/bus.c | 30 ++++++++++++++++-------------- drivers/acpi/ec.c | 12 ++++++++++-- drivers/acpi/osl.c | 38 +++++++++++++++++++------------------- drivers/acpi/pci_link.c | 2 ++ drivers/acpi/processor_idle.c | 14 ++++++++++++-- include/acpi/platform/aclinux.h | 6 ++++++ 7 files changed, 77 insertions(+), 37 deletions(-) -- 1.8.4.2

11 years, 7 months

4
23
0 0

[PATCH v5 0/5] Hardware Reduced Mode Cleanup for ACPI

by al.stone＠linaro.org

From: Al Stone <al.stone(a)linaro.org> This series of patches starts with Hanjun's patch to create a kernel config item for CONFIG_ACPI_REDUCED_HARDWARE [0]. Building on that, I then reviewed all of the code that touched any of several fields in the FADT that the OSPM is supposed to ignore when ACPI is in Hardware Reduced mode [1]. Any time there was a use of one of the fields to be ignored, I evaluated whether or not the code was implementing Hardware Reduced mode correctly. Similarly, for each the flags in the FADT flags field that are to be ignored in Hardware Reduced mode, the kernel code was again scanned for proper usage. The remainder of the patches are to fix all of the situations I could find where the kernel would not behave correctly in this ACPI mode. These seem to work just fine on the RTSM model for ARMv7, both with and without ACPI enabled, and with and without ACPI_REDUCED_HARDWARE enabled; similarly for the FVP model for ARMv8. The patches for ACPI on ARM hardware have been submitted elsewhere but they presume that reduced HW mode is functioning correctly. In the meantime, there's no way I can think of to test all possible scenarios so feedback would be greatly appreciated. [0] List at https://wiki.linaro.org/LEG/Engineering/Kernel/ACPI/AcpiReducedHw#Section_5… [1] Please see the ACPI Specification v5.0 for details on Hardware Reduced mode (sections 3.11.1, 4.1, 5.2.9, at a minimum). Changes for v5: -- Clarify that if the kernel config option to build ACPI hardware reduced mode is used, it builds a hardware reduced *only* kernel (i.e., full legacy ACPI mode will no longer work). Changes for v4: -- Given the current state of ACPICA, disable CONFIG_ACPI_REDUCED_HARDWARE for use on anything other than ARM. -- Replaced #ifdefs with run-time checking for hardware reduced mode, whenever possible Changes for v3: -- Modified enabling ACPI_REDUCED_HARDWARE in ACPICA when using kernel config item CONFIG_ACPI_REDUCED_HARDWARE; now consistent with ACPICA code base where needed -- Enable X86 for CONFIG_ACPI_REDUCED_HARDWARE -- Minimize bus master reload patching -- Remove unneeded patch for dmi_check_system() (was 4/6) -- Correct the patch for removing unneeded map/unmap of FADT fields Changes for v2: -- Remove patch that was outside of reduced HW mode changes -- Simplify CONFIG_ACPI_REDUCED_HARDWARE in Kconfig -- Simplify use of CONFIG_ACPI_REDUCED_HARDWARE in #ifdefs -- Ensure changelogs are present -- Combine and simplify previous patches 8 & 10 Al Stone (5): ACPI: introduce CONFIG_ACPI_REDUCED_HARDWARE_ONLY to enforce this ACPI mode ACPI: bus master reload not supported in reduced HW mode ACPI: HW reduced mode does not allow use of the FADT sci_interrupt field ACPI: in HW reduced mode, using FADT PM information is not allowed. ACPI: do not map/unmap memory regions for FADT entries in reduced HW mode drivers/acpi/Kconfig | 12 ++++++++++++ drivers/acpi/bus.c | 30 ++++++++++++++++-------------- drivers/acpi/osl.c | 38 +++++++++++++++++++------------------- drivers/acpi/pci_link.c | 2 ++ drivers/acpi/processor_idle.c | 14 ++++++++++++-- include/acpi/platform/aclinux.h | 6 ++++++ 6 files changed, 67 insertions(+), 35 deletions(-) -- 1.8.4.2

11 years, 7 months

5
11
0 0

[PATCH 0/3] ASL adjustments for APEI test via GRUB

by Tomasz Nowicki

This patch set is needed due to: - APEI tables address adjustments - rebase to the kernel 3.13 - more descriptive error example Tomasz Nowicki (3): apei: Adjust addresses for APEI testing via UEFI -> GRUB -> ACPI kernel. acpi, apei: More detailed info regarding memory error. apei: Follow up lately kernel changes. platforms/rtsm_ve-aemv8a.acpi/bert.asl | 2 +- platforms/rtsm_ve-aemv8a.acpi/einj.asl | 16 ++++++++-------- platforms/rtsm_ve-aemv8a.acpi/erst.asl | 32 +++++++++++++++---------------- platforms/rtsm_ve-aemv8a.acpi/hest.asl | 2 +- tools/bfapei/bfapei.c | 20 ++++++++++++++++++- tools/common/include/acpi.h | 33 ++++++++++++++++++++++++++------ 6 files changed, 72 insertions(+), 33 deletions(-) -- 1.7.9.5

11 years, 7 months

3
10
0 0

[PATCH] APEI: Add 'apei'command for APEI blob loading into the specified address.

by Tomasz Nowicki

--- grub-core/loader/arm64/linux.c | 70 +++++++++++++++++++++++++++++++++++++++- 1 file changed, 69 insertions(+), 1 deletion(-) diff --git a/grub-core/loader/arm64/linux.c b/grub-core/loader/arm64/linux.c index 75ad871..17938ba 100644 --- a/grub-core/loader/arm64/linux.c +++ b/grub-core/loader/arm64/linux.c @@ -54,6 +54,8 @@ static grub_addr_t initrd_end; static void *loaded_fdt; static void *fdt; +static void *apei_data; + static void * get_firmware_fdt (void) { @@ -241,6 +243,69 @@ out: } static grub_err_t +grub_cmd_apei (grub_command_t cmd __attribute__ ((unused)), + int argc, char *argv[]) +{ + grub_efi_physical_address_t apei_phy_addr; + grub_efi_boot_services_t *b; + grub_efi_status_t status; + grub_file_t apei; + void *blob = NULL; + int size; + + if (!loaded) + { + grub_error (GRUB_ERR_BAD_ARGUMENT, + N_("you need to load the kernel first")); + return GRUB_ERR_BAD_OS; + } + + if (argc != 1) + return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("filename expected")); + + apei = grub_file_open (argv[0]); + if (!apei) + goto out; + + size = grub_file_size (apei); + if (size == 0) + goto out; + + blob = grub_malloc (size); + if (!blob) + goto out; + + if (grub_file_read (apei, blob, size) < size) + { + if (!grub_errno) + grub_error (GRUB_ERR_BAD_OS, N_("premature end of file %s"), argv[0]); + goto out; + } + + grub_dprintf ("linux", "allocating %ld bytes for APEI blob\n", size); + apei_phy_addr = 0x80000000 + 0x2000000 - 0x200000; + apei_data = grub_efi_allocate_pages (apei_phy_addr, BYTES_TO_PAGES(size)); + if (!apei_data) { + grub_error (GRUB_ERR_OUT_OF_MEMORY, + N_("can not allocate at 0x%lx"), apei_phy_addr); + goto out; + } + + grub_memmove (apei_data, blob, size); + + grub_dprintf ("linux", "Installed APEI blob @ %p\n", apei_data); + +out: + if (apei) + grub_file_close (apei); + + if (blob) + grub_free (blob); + + return grub_errno; +} + +static grub_err_t grub_linux_boot (void) { grub_efi_memory_mapped_device_path_t *mempath; @@ -465,7 +530,7 @@ fail: } -static grub_command_t cmd_linux, cmd_initrd, cmd_devicetree; +static grub_command_t cmd_linux, cmd_initrd, cmd_devicetree, cmd_apei; GRUB_MOD_INIT (linux) { @@ -476,6 +541,9 @@ GRUB_MOD_INIT (linux) cmd_devicetree = grub_register_command ("devicetree", grub_cmd_devicetree, 0, N_("Load DTB file.")); + + cmd_apei = grub_register_command ("apei", grub_cmd_apei, 0, + N_("Load APEI blob.")); my_mod = mod; } -- 1.7.9.5

11 years, 7 months

2
4
0 0

[PATCH 0/1 v2] Support for flash device in physical memory map based on ACPI description

by Tomasz Nowicki

Changes for v2: - fix ID driver - use generic utility acpi_keyvalue to retrieve properties from _DSM Tomasz Nowicki (1): acpi, mtd: Add support for flash device in physical memory map based on ACPI description drivers/acpi/acpi_platform.c | 4 + drivers/mtd/maps/Kconfig | 9 + drivers/mtd/maps/Makefile | 1 + drivers/mtd/maps/physmap_acpi.c | 372 +++++++++++++++++++++++++++++++++++++++ 4 files changed, 386 insertions(+) create mode 100644 drivers/mtd/maps/physmap_acpi.c -- 1.7.9.5

11 years, 7 months

2
2
0 0

[PATCH] rtsm_ve-aemv8a: Add ASL for cf-flash memory

by Tomasz Nowicki

Added info: - memory resource ranges - DSM property, specific for cfi-flash memory Signed-off-by: Tomasz Nowicki <tomasz.nowicki(a)linaro.org> --- platforms/rtsm_ve-aemv8a.acpi/dsdt.asl | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/platforms/rtsm_ve-aemv8a.acpi/dsdt.asl b/platforms/rtsm_ve-aemv8a.acpi/dsdt.asl index 62f1402..43ac170 100644 --- a/platforms/rtsm_ve-aemv8a.acpi/dsdt.asl +++ b/platforms/rtsm_ve-aemv8a.acpi/dsdt.asl @@ -467,6 +467,29 @@ DefinitionBlock ( } } + Device (FLH0) { + Name (_HID, "LNRO0015") + Name (_UID, 0) + Method (_CRS, 0x0, Serialized) { + Name (RBUF, ResourceTemplate () { + Memory32Fixed (ReadWrite, 0x08000000, 0x04000000) + Memory32Fixed (ReadWrite, 0x0C000000, 0x04000000) + }) + Return (RBUF) + } + + Method(_DSM, 4, NotSerialized) { + Store (Package () + { + "bank-width", "4", + }, Local0) + + DTGP (Arg0, Arg1, Arg2, Arg3, RefOf (Local0)) + + Return (Local0) + } + } + Device (AMBA) { Name (_HID, "AMBA0000") Name (_UID, 0) -- 1.7.9.5

11 years, 7 months

2
1
0 0

[PATCH 0/3] make DSM lookup generic and add fixed regulator

by Graeme Gregory

I took the _DSM lookup code from Brandon and moved it to generic acpi drivers directory so it can be accessed from any driver. I then implemented a fixed-regulator in ACPI using the _DSM lookups for the regulator parameters. This is obviously all prototype stuff until upstream/UEFI guys make a decision on _DSM vs _PRP and also unified key/value fetching. ASL patch will follow. Graeme

11 years, 7 months

2
4
0 0

[PATCH 0/4] ACPI / ARM64: Whitelist rtc, kmi, wdt devices.

by naresh.bhat＠linaro.org

From: Naresh Bhat <naresh.bhat(a)linaro.org> Whitelist few more devices (rtc, kmi and wdt). Test log on FVP model as below root@genericarmv8:~# dmesg |grep -i wdt [ 80.051138] sp805-wdt LNRO0011:00: registration successful root@genericarmv8:~# dmesg |grep -i rtc [ 80.047447] rtc-pl031 LNRO0013:00: rtc core: registered pl031 as rtc0 [ 80.066564] rtc-pl031 LNRO0013:00: setting system clock to 1970-01-01 00:01:18 UTC (78) root@genericarmv8:~# root@genericarmv8:/sys# find . -name LNRO* ./bus/acpi/devices/LNRO0003:00 ./bus/acpi/devices/LNRO0005:00 ./bus/acpi/devices/LNRO0007:00 ./bus/acpi/devices/LNRO0008:00 ./bus/acpi/devices/LNRO0008:01 ./bus/acpi/devices/LNRO0008:02 ./bus/acpi/devices/LNRO0009:00 ./bus/acpi/devices/LNRO0011:00 ./bus/acpi/devices/LNRO0012:00 ./bus/acpi/devices/LNRO0012:01 ./bus/acpi/devices/LNRO0013:00 ./bus/acpi/devices/LNRO0014:00 ./bus/acpi/devices/LNRO000A:00 ./bus/acpi/devices/LNRO000A:01 ./bus/acpi/devices/LNRO000A:02 ./bus/acpi/devices/LNRO000A:03 ./bus/acpi/devices/LNRO000C:00 ./bus/acpi/devices/LNRO000D:00 ./bus/acpi/devices/LNRO000E:00 ./bus/acpi/devices/LNRO000F:00 ./bus/acpi/devices/LNRO000F:01 ./bus/amba/devices/LNRO0011:00 ./bus/amba/devices/LNRO0012:00 ./bus/amba/devices/LNRO0012:01 ./bus/amba/devices/LNRO0013:00 ./bus/amba/devices/LNRO0014:00 ./bus/amba/devices/LNRO000A:00 ./bus/amba/devices/LNRO000A:01 ./bus/amba/devices/LNRO000A:02 ./bus/amba/devices/LNRO000A:03 ./bus/amba/devices/LNRO000D:00 ./bus/amba/devices/LNRO000E:00 ./bus/amba/devices/LNRO000F:00 ./bus/amba/devices/LNRO000F:01 ./bus/amba/drivers/kmi-pl050/LNRO000F:00 ./bus/amba/drivers/kmi-pl050/LNRO000F:01 ./bus/amba/drivers/sp805-wdt/LNRO0011:00 ./bus/amba/drivers/rtc-pl031/LNRO0013:00 ./bus/amba/drivers/uart-pl011/LNRO000A:00 ./bus/amba/drivers/uart-pl011/LNRO000A:01 ./bus/amba/drivers/uart-pl011/LNRO000A:02 ./bus/amba/drivers/uart-pl011/LNRO000A:03 ./bus/platform/devices/LNRO0003:00 ./bus/platform/devices/LNRO0005:00 ./bus/platform/devices/LNRO0007:00 ./bus/platform/devices/LNRO0008:00 ./bus/platform/devices/LNRO0008:01 ./bus/platform/devices/LNRO0008:02 ./bus/platform/devices/LNRO0009:00 ./bus/platform/drivers/vexpress-sysreg/LNRO0009:00 ./bus/platform/drivers/smc91x/LNRO0003:00 ./bus/platform/drivers/fixed-clk/LNRO0008:00 ./bus/platform/drivers/fixed-clk/LNRO0008:01 ./bus/platform/drivers/fixed-clk/LNRO0008:02 ./bus/platform/drivers/arm-pmu/LNRO0007:00 ./bus/platform/drivers/virtio-mmio/LNRO0005:00 ./devices/platform/LNRO0003:00 ./devices/platform/LNRO0005:00 ./devices/platform/LNRO0007:00 ./devices/platform/LNRO0008:00 ./devices/platform/LNRO0008:01 ./devices/platform/LNRO0008:02 ./devices/platform/LNRO0009:00 ./devices/platform/AMBA0000:00/LNRO0011:00 ./devices/platform/AMBA0000:00/LNRO0012:00 ./devices/platform/AMBA0000:00/LNRO0012:01 ./devices/platform/AMBA0000:00/LNRO0013:00 ./devices/platform/AMBA0000:00/LNRO0014:00 ./devices/platform/AMBA0000:00/LNRO000A:00 ./devices/platform/AMBA0000:00/LNRO000A:01 ./devices/platform/AMBA0000:00/LNRO000A:02 ./devices/platform/AMBA0000:00/LNRO000A:03 ./devices/platform/AMBA0000:00/LNRO000D:00 ./devices/platform/AMBA0000:00/LNRO000E:00 ./devices/platform/AMBA0000:00/LNRO000F:00 ./devices/platform/AMBA0000:00/LNRO000F:01 ./devices/LNXSYSTM:00/device:00/LNRO0007:00 ./devices/LNXSYSTM:00/device:00/AMBA0000:00/LNRO0011:00 ./devices/LNXSYSTM:00/device:00/AMBA0000:00/LNRO0012:00 ./devices/LNXSYSTM:00/device:00/AMBA0000:00/LNRO0012:01 ./devices/LNXSYSTM:00/device:00/AMBA0000:00/LNRO0013:00 ./devices/LNXSYSTM:00/device:00/AMBA0000:00/LNRO0014:00 ./devices/LNXSYSTM:00/device:00/AMBA0000:00/LNRO000A:00 ./devices/LNXSYSTM:00/device:00/AMBA0000:00/LNRO000A:01 ./devices/LNXSYSTM:00/device:00/AMBA0000:00/LNRO000A:02 ./devices/LNXSYSTM:00/device:00/AMBA0000:00/LNRO000A:03 ./devices/LNXSYSTM:00/device:00/AMBA0000:00/LNRO000C:00 ./devices/LNXSYSTM:00/device:00/AMBA0000:00/LNRO000D:00 ./devices/LNXSYSTM:00/device:00/AMBA0000:00/LNRO000E:00 ./devices/LNXSYSTM:00/device:00/AMBA0000:00/LNRO000F:00 ./devices/LNXSYSTM:00/device:00/AMBA0000:00/LNRO000F:01 ./devices/LNXSYSTM:00/device:00/ACPI0004:01/LNRO0003:00 ./devices/LNXSYSTM:00/device:00/ACPI0004:01/LNRO0008:00 ./devices/LNXSYSTM:00/device:00/ACPI0004:01/LNRO0008:01 ./devices/LNXSYSTM:00/device:00/ACPI0004:01/LNRO0008:02 ./devices/LNXSYSTM:00/device:00/ACPI0004:01/ACPI0004:02/LNRO0005:00 ./devices/LNXSYSTM:00/device:00/ACPI0004:01/ACPI0004:02/LNRO0009:00 root@genericarmv8:/sys# Naresh Bhat (4): ACPI / ARM64: Whitelist the ACPI ID for wdt watchdog: Add sp805_wdt depends on ARM64 ACPI / ARM64: Whitelist the ACPI ID for kmi ACPI / ARM64: Whitelist the ACPI ID for rtc drivers/acpi/acpi_platform.c | 3 +++ drivers/watchdog/Kconfig | 2 +- 2 files changed, 4 insertions(+), 1 deletion(-) -- 1.7.9.5

11 years, 7 months

4
11
0 0

[PATCH v4 0/5] Hardware Reduced Mode Cleanup for ACPI

by al.stone＠linaro.org

From: Al Stone <al.stone(a)linaro.org> This series of patches starts with Hanjun's patch to create a kernel config item for CONFIG_ACPI_REDUCED_HARDWARE [0]. Building on that, I then reviewed all of the code that touched any of several fields in the FADT that the OSPM is supposed to ignore when ACPI is in Hardware Reduced mode [1]. Any time there was a use of one of the fields to be ignored, I evaluated whether or not the code was implementing Hardware Reduced mode correctly. Similarly, for each the flags in the FADT flags field that are to be ignored in Hardware Reduced mode, the kernel code was again scanned for proper usage. The remainder of the patches are to fix all of the situations I could find where the kernel would not behave correctly in this ACPI mode. These seem to work just fine on the RTSM model for ARMv7, both with and without ACPI enabled, and with and without ACPI_REDUCED_HARDWARE enabled; similarly for the FVP model for ARMv8. The patches for ACPI on ARM hardware have been submitted elsewhere but they presume that reduced HW mode is functioning correctly. In the meantime, there's no way I can think of to test all possible scenarios so feedback would be greatly appreciated. [0] List at https://wiki.linaro.org/LEG/Engineering/Kernel/ACPI/AcpiReducedHw#Section_5… [1] Please see the ACPI Specification v5.0 for details on Hardware Reduced mode (sections 3.11.1, 4.1, 5.2.9, at a minimum). Changes for v4: -- Given the current state of ACPICA, disable CONFIG_ACPI_REDUCED_HARDWARE for use on anything other than ARM. -- Replaced #ifdefs with run-time checking for hardware reduced mode, whenever possible Changes for v3: -- Modified enabling ACPI_REDUCED_HARDWARE in ACPICA when using kernel config item CONFIG_ACPI_REDUCED_HARDWARE; now consistent with ACPICA code base where needed -- Enable X86 for CONFIG_ACPI_REDUCED_HARDWARE -- Minimize bus master reload patching -- Remove unneeded patch for dmi_check_system() (was 4/6) -- Correct the patch for removing unneeded map/unmap of FADT fields Changes for v2: -- Remove patch that was outside of reduced HW mode changes -- Simplify CONFIG_ACPI_REDUCED_HARDWARE in Kconfig -- Simplify use of CONFIG_ACPI_REDUCED_HARDWARE in #ifdefs -- Ensure changelogs are present -- Combine and simplify previous patches 8 & 10 Al Stone (5): ACPI: introduce CONFIG_ACPI_REDUCED_HARDWARE to enable this ACPI mode ACPI: bus master reload not supported in reduced HW mode ACPI: HW reduced mode does not allow use of the FADT sci_interrupt field ACPI: in HW reduced mode, using FADT PM information is not allowed. ACPI: do not map/unmap memory regions for FADT entries in reduced HW mode drivers/acpi/Kconfig | 8 ++++++++ drivers/acpi/bus.c | 30 ++++++++++++++++-------------- drivers/acpi/osl.c | 38 +++++++++++++++++++------------------- drivers/acpi/pci_link.c | 2 ++ drivers/acpi/processor_idle.c | 14 ++++++++++++-- include/acpi/platform/aclinux.h | 6 ++++++ 6 files changed, 63 insertions(+), 35 deletions(-) -- 1.8.3.1

11 years, 7 months

3
9
0 0

[RFC part1 PATCH 0/7] Make ACPI core running on ARM64

by Hanjun Guo

This is the first part of making ACPI core running on ARM. PCI is optional on ARM64 but ACPI is dependent on PCI now, so in the first patch we try to make ACPI can be running without PCI. _PDC is requred for ACPI processor_core.c, but its related code is a little bit x86/ia64 dependent, so I rework _PDC related staff to make it more arch independent, and then introduce the skeleton of _PDC related for ARM64, it should be fully implemented after ACPI spec is ready for processor idle control. After that, arm-core.c is introduced so we can get ACPI table from UEFI, then we can parsed for SMP initialisation, GIC initialisation and for ACPI drivers. This patch set is based on: git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git origin/linux-next branch and plus Al Stone's v2 reduced hardware profile patch. Hanjun Guo (7): ACPI: Make ACPI core running without PCI on ARM64 ARM64 : Add dummy asm/cpu.h ACPI / processor_core: Rework _PDC related stuff to make it more arch-independent ARM64 / ACPI: Introduce the skeleton of _PDC related for ARM64 ARM64 / ACPI: Introduce arm_core.c and its related head file ARM64 / ACPI: Introduce lowlevel suspend function ARM64 / ACPI: Enable ARM64 in Kconfig arch/arm64/Kconfig | 2 + arch/arm64/include/asm/acpi.h | 93 +++++++++++++++ arch/arm64/include/asm/cpu.h | 25 ++++ arch/arm64/include/asm/processor.h | 11 ++ arch/arm64/kernel/process.c | 5 + arch/arm64/kernel/setup.c | 8 ++ drivers/acpi/Kconfig | 12 +- drivers/acpi/Makefile | 4 +- drivers/acpi/internal.h | 5 + drivers/acpi/osl.c | 16 +++ drivers/acpi/plat/Makefile | 1 + drivers/acpi/plat/arm-core.c | 226 ++++++++++++++++++++++++++++++++++++ drivers/acpi/processor_core.c | 27 ++--- drivers/acpi/reboot.c | 47 +++++--- drivers/pnp/pnpacpi/rsparser.c | 2 + 15 files changed, 452 insertions(+), 32 deletions(-) create mode 100644 arch/arm64/include/asm/acpi.h create mode 100644 arch/arm64/include/asm/cpu.h create mode 100644 drivers/acpi/plat/Makefile create mode 100644 drivers/acpi/plat/arm-core.c -- 1.7.9.5

11 years, 8 months

13
67
0 0

[PATCHv2] rtsm_ve-aemv8a: correct GIC addresses in APIC table

by Graeme Gregory

The addresses were not updated from the change to the FVP model. Correct the addresses. Boot tested with patch series from Hanjun Guo Signed-off-by: Graeme Gregory <graeme.gregory(a)linaro.org> --- platforms/rtsm_ve-aemv8a.acpi/apic.asl | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) diff --git a/platforms/rtsm_ve-aemv8a.acpi/apic.asl b/platforms/rtsm_ve-aemv8a.acpi/apic.asl index c782e70..81351c3 100644 --- a/platforms/rtsm_ve-aemv8a.acpi/apic.asl +++ b/platforms/rtsm_ve-aemv8a.acpi/apic.asl @@ -44,7 +44,7 @@ [0004] Asl Compiler ID : "INTL" [0004] Asl Compiler Revision : 20110623 -[0004] Local Apic Address : 2C002000 +[0004] Local Apic Address : 2C000000 [0004] Flags (decoded below) : 00000001 PC-AT Compatibility : 0 @@ -58,7 +58,7 @@ [0004] Parking Protocol Version : 00000000 [0004] Performance Interrupt : 00000000 [0008] Parked Address : 0000000000000000 -[0008] Base Address : 000000002C002000 /* this is the foundation model's GIC address */ +[0008] Base Address : 000000002C000000 /* armv8 FVP Base GIC address */ [0001] Subtable Type : 0B [Generic Interrupt Controller] [0001] Length : 28 @@ -70,7 +70,7 @@ [0004] Parking Protocol Version : 00000000 [0004] Performance Interrupt : 00000000 [0008] Parked Address : 0000000000000000 -[0008] Base Address : 000000002C002000 +[0008] Base Address : 000000002C000000 [0001] Subtable Type : 0B [Generic Interrupt Controller] [0001] Length : 28 @@ -82,7 +82,7 @@ [0004] Parking Protocol Version : 00000000 [0004] Performance Interrupt : 00000000 [0008] Parked Address : 0000000000000000 -[0008] Base Address : 000000002C002000 +[0008] Base Address : 000000002C000000 [0001] Subtable Type : 0B [Generic Interrupt Controller] [0001] Length : 28 @@ -94,7 +94,7 @@ [0004] Parking Protocol Version : 00000000 [0004] Performance Interrupt : 00000000 [0008] Parked Address : 0000000000000000 -[0008] Base Address : 000000002C002000 +[0008] Base Address : 000000002C000000 [0001] Subtable Type : 0B [Generic Interrupt Controller] [0001] Length : 28 @@ -106,7 +106,7 @@ [0004] Parking Protocol Version : 00000000 [0004] Performance Interrupt : 00000000 [0008] Parked Address : 0000000000000000 -[0008] Base Address : 000000002C002000 +[0008] Base Address : 000000002C000000 [0001] Subtable Type : 0B [Generic Interrupt Controller] [0001] Length : 28 @@ -118,7 +118,7 @@ [0004] Parking Protocol Version : 00000000 [0004] Performance Interrupt : 00000000 [0008] Parked Address : 0000000000000000 -[0008] Base Address : 000000002C002000 +[0008] Base Address : 000000002C000000 [0001] Subtable Type : 0B [Generic Interrupt Controller] [0001] Length : 28 @@ -130,7 +130,7 @@ [0004] Parking Protocol Version : 00000000 [0004] Performance Interrupt : 00000000 [0008] Parked Address : 0000000000000000 -[0008] Base Address : 000000002C002000 +[0008] Base Address : 000000002C000000 [0001] Subtable Type : 0B [Generic Interrupt Controller] [0001] Length : 28 @@ -142,12 +142,12 @@ [0004] Parking Protocol Version : 00000000 [0004] Performance Interrupt : 00000000 [0008] Parked Address : 0000000000000000 -[0008] Base Address : 000000002C002000 +[0008] Base Address : 000000002C000000 [0001] Subtable Type : 0C [Generic Interrupt Distributor] [0001] Length : 18 [0002] Reserved : 0000 [0004] Local GIC Hardware ID : 00000000 -[0008] Base Address : 000000002C001000 /* armv8 foundation model's GIC distributor base addr */ +[0008] Base Address : 000000002F000000 /* armv8 FVP Base GIC distributor base addr */ [0004] Interrupt Base : 00000000 [0004] Reserved : 00000000 -- 1.8.4.2

11 years, 8 months

2
1
0 0

[PATCH] arm64: dts: remove gic from fvp acpi version

by Graeme Gregory

Patches to probe GIC from APIC table are now working. Signed-off-by: Graeme Gregory <graeme.gregory(a)linaro.org> --- arch/arm64/boot/dts/fvp-base-gicv2-psci-acpi.dts | 13 ------------- 1 file changed, 13 deletions(-) diff --git a/arch/arm64/boot/dts/fvp-base-gicv2-psci-acpi.dts b/arch/arm64/boot/dts/fvp-base-gicv2-psci-acpi.dts index 3189f0e..d859a94 100644 --- a/arch/arm64/boot/dts/fvp-base-gicv2-psci-acpi.dts +++ b/arch/arm64/boot/dts/fvp-base-gicv2-psci-acpi.dts @@ -38,7 +38,6 @@ / { model = "FVP Base"; compatible = "arm,vfp-base", "arm,vexpress"; - interrupt-parent = <&gic>; #address-cells = <2>; #size-cells = <2>; @@ -113,16 +112,4 @@ <0x00000008 0x80000000 0 0x80000000>; */ }; - - gic: interrupt-controller@2f000000 { - compatible = "arm,cortex-a15-gic", "arm,cortex-a9-gic"; - #interrupt-cells = <3>; - #address-cells = <0>; - interrupt-controller; - reg = <0x0 0x2f000000 0 0x10000>, - <0x0 0x2c000000 0 0x2000>, - <0x0 0x2c010000 0 0x2000>, - <0x0 0x2c02F000 0 0x2000>; - interrupts = <1 9 0xf04>; - }; }; -- 1.8.4.2

11 years, 8 months

2
1
0 0

[PATCH] rtsm_ve-aemv8a: correct GIC addresses in APIC table

by Graeme Gregory

The addresses were not updated from the change to the FVP model. Correct the addresses. Boot tested with patch series from Hanjun Guo Signed-off-by: Graeme Gregory <graeme.gregory(a)linaro.org> --- platforms/rtsm_ve-aemv8a.acpi/apic.asl | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) diff --git a/platforms/rtsm_ve-aemv8a.acpi/apic.asl b/platforms/rtsm_ve-aemv8a.acpi/apic.asl index c782e70..b000068 100644 --- a/platforms/rtsm_ve-aemv8a.acpi/apic.asl +++ b/platforms/rtsm_ve-aemv8a.acpi/apic.asl @@ -44,7 +44,7 @@ [0004] Asl Compiler ID : "INTL" [0004] Asl Compiler Revision : 20110623 -[0004] Local Apic Address : 2C002000 +[0004] Local Apic Address : 2C000000 [0004] Flags (decoded below) : 00000001 PC-AT Compatibility : 0 @@ -58,7 +58,7 @@ [0004] Parking Protocol Version : 00000000 [0004] Performance Interrupt : 00000000 [0008] Parked Address : 0000000000000000 -[0008] Base Address : 000000002C002000 /* this is the foundation model's GIC address */ +[0008] Base Address : 000000002C000000 /* this is the foundation model's GIC address */ [0001] Subtable Type : 0B [Generic Interrupt Controller] [0001] Length : 28 @@ -70,7 +70,7 @@ [0004] Parking Protocol Version : 00000000 [0004] Performance Interrupt : 00000000 [0008] Parked Address : 0000000000000000 -[0008] Base Address : 000000002C002000 +[0008] Base Address : 000000002C000000 [0001] Subtable Type : 0B [Generic Interrupt Controller] [0001] Length : 28 @@ -82,7 +82,7 @@ [0004] Parking Protocol Version : 00000000 [0004] Performance Interrupt : 00000000 [0008] Parked Address : 0000000000000000 -[0008] Base Address : 000000002C002000 +[0008] Base Address : 000000002C000000 [0001] Subtable Type : 0B [Generic Interrupt Controller] [0001] Length : 28 @@ -94,7 +94,7 @@ [0004] Parking Protocol Version : 00000000 [0004] Performance Interrupt : 00000000 [0008] Parked Address : 0000000000000000 -[0008] Base Address : 000000002C002000 +[0008] Base Address : 000000002C000000 [0001] Subtable Type : 0B [Generic Interrupt Controller] [0001] Length : 28 @@ -106,7 +106,7 @@ [0004] Parking Protocol Version : 00000000 [0004] Performance Interrupt : 00000000 [0008] Parked Address : 0000000000000000 -[0008] Base Address : 000000002C002000 +[0008] Base Address : 000000002C000000 [0001] Subtable Type : 0B [Generic Interrupt Controller] [0001] Length : 28 @@ -118,7 +118,7 @@ [0004] Parking Protocol Version : 00000000 [0004] Performance Interrupt : 00000000 [0008] Parked Address : 0000000000000000 -[0008] Base Address : 000000002C002000 +[0008] Base Address : 000000002C000000 [0001] Subtable Type : 0B [Generic Interrupt Controller] [0001] Length : 28 @@ -130,7 +130,7 @@ [0004] Parking Protocol Version : 00000000 [0004] Performance Interrupt : 00000000 [0008] Parked Address : 0000000000000000 -[0008] Base Address : 000000002C002000 +[0008] Base Address : 000000002C000000 [0001] Subtable Type : 0B [Generic Interrupt Controller] [0001] Length : 28 @@ -142,12 +142,12 @@ [0004] Parking Protocol Version : 00000000 [0004] Performance Interrupt : 00000000 [0008] Parked Address : 0000000000000000 -[0008] Base Address : 000000002C002000 +[0008] Base Address : 000000002C000000 [0001] Subtable Type : 0C [Generic Interrupt Distributor] [0001] Length : 18 [0002] Reserved : 0000 [0004] Local GIC Hardware ID : 00000000 -[0008] Base Address : 000000002C001000 /* armv8 foundation model's GIC distributor base addr */ +[0008] Base Address : 000000002F000000 /* armv8 foundation model's GIC distributor base addr */ [0004] Interrupt Base : 00000000 [0004] Reserved : 00000000 -- 1.8.4.2

11 years, 8 months

2
1
0 0

[PATCH] rtsm_ve-aemv8a: Add ASL for vexpress sysreg

by naresh.bhat＠linaro.org

From: Naresh Bhat <naresh.bhat(a)linaro.org> Add ASL to support vexpress sysreg rtsm_ve-aemv8a platform. Signed-off-by: Naresh Bhat <naresh.bhat(a)linaro.org> --- platforms/rtsm_ve-aemv8a.acpi/dsdt.asl | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/platforms/rtsm_ve-aemv8a.acpi/dsdt.asl b/platforms/rtsm_ve-aemv8a.acpi/dsdt.asl index 8cea035..bd15413 100644 --- a/platforms/rtsm_ve-aemv8a.acpi/dsdt.asl +++ b/platforms/rtsm_ve-aemv8a.acpi/dsdt.asl @@ -389,6 +389,18 @@ DefinitionBlock ( ,, , AddressRangeMemory, TypeStatic) }) + Device (SREG) { + Name (_HID, "LNRO0009") + Name (_UID, 0) + + Method (_CRS, 0x0, Serialized) { + Name (RBUF, ResourceTemplate() { + Memory32Fixed (ReadWrite, 0x1c010000, 0x1000) + }) + Return (RBUF) + } + } + Device (VIRT) { Name (_HID, "LNRO0005") Name (_UID, 0) -- 1.7.9.5

11 years, 8 months

2
1
0 0

[PATCH] ACPI: explicitly initialize a value to silence compiler warning

by al.stone＠linaro.org

From: Al Stone <al.stone(a)linaro.org> In acpi_processor_resume(), the variable resumed_bm_rld is being used without being initialized, so initialize it. Signed-off-by: Al Stone <al.stone(a)linaro.org> --- drivers/acpi/processor_idle.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index 597cdab..86d11a6 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -213,7 +213,7 @@ static int acpi_processor_suspend(void) static void acpi_processor_resume(void) { - u32 resumed_bm_rld; + u32 resumed_bm_rld = 0; acpi_read_bit_register(ACPI_BITREG_BUS_MASTER_RLD, &resumed_bm_rld); if (resumed_bm_rld == saved_bm_rld) -- 1.8.3.1

11 years, 8 months

1
0
0 0

[PATCH 1/2] irq, irqdomain: Refactor irq_create_of_mapping function.

by Tomasz Nowicki

Move OF specific logic to OF irq.c file and make it more generic so acpi can use it too. Signed-off-by: Tomasz Nowicki <tomasz.nowicki(a)linaro.org> --- drivers/of/irq.c | 42 ++++++++++++++++++++++++++++++++++++++++++ include/linux/irqdomain.h | 3 +++ kernel/irq/irqdomain.c | 31 ++++++++++--------------------- 3 files changed, 55 insertions(+), 21 deletions(-) diff --git a/drivers/of/irq.c b/drivers/of/irq.c index 786b0b4..2bac976 100644 --- a/drivers/of/irq.c +++ b/drivers/of/irq.c @@ -26,6 +26,48 @@ #include <linux/string.h> #include <linux/slab.h> + +/** + * irq_create_of_mapping - Look up for domain and map an interrupt given irq + * @irq_data: pointer to arguments structure + * + * This function looks for associated domain, optionally translates, and maps + * int linux virq space + */ +unsigned int irq_create_of_mapping(struct of_phandle_args *irq_data) +{ + struct irq_domain *domain; + irq_hw_number_t hwirq; + unsigned int type = IRQ_TYPE_NONE; + + if (!irq_data->np) { + /* + * Nothing wrong with that, try default domain. + */ + domain = NULL; + } else { + domain = irq_find_host(irq_data->np); + if (!domain) { + pr_warn("no irq domain found for %s !\n", + of_node_full_name(irq_data->np)); + return 0; + } + } + + /* If domain has no translation, then we assume interrupt line */ + if (domain->ops->xlate == NULL) + hwirq = irq_data->args[0]; + else { + if (domain->ops->xlate(domain, irq_data->np, irq_data->args, + irq_data->args_count, &hwirq, &type)) + return 0; + } + + /* Create mapping */ + return irq_create_mapping_type(domain, hwirq, type); +} +EXPORT_SYMBOL_GPL(irq_create_of_mapping); + /** * irq_of_parse_and_map - Parse and map an interrupt into linux virq space * @dev: Device node of the device whose interrupt is to be mapped diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h index c983ed1..c14f59b 100644 --- a/include/linux/irqdomain.h +++ b/include/linux/irqdomain.h @@ -175,6 +175,9 @@ extern void irq_domain_associate_many(struct irq_domain *domain, extern unsigned int irq_create_mapping(struct irq_domain *host, irq_hw_number_t hwirq); +extern unsigned int irq_create_mapping_type(struct irq_domain *domain, + irq_hw_number_t hwirq, + unsigned int type); extern void irq_dispose_mapping(unsigned int virq); /** diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c index c661552..bf74a0b 100644 --- a/kernel/irq/irqdomain.c +++ b/kernel/irq/irqdomain.c @@ -465,29 +465,18 @@ int irq_create_strict_mappings(struct irq_domain *domain, unsigned int irq_base, } EXPORT_SYMBOL_GPL(irq_create_strict_mappings); -unsigned int irq_create_of_mapping(struct of_phandle_args *irq_data) +/** + * irq_create_mapping_type() - Create mapping and set given irq type + * @domain: domain owning this hardware interrupt + * @hwirq: hardware interrupt + * @type: interrupt type + */ +unsigned int irq_create_mapping_type(struct irq_domain *domain, + irq_hw_number_t hwirq, + unsigned int type) { - struct irq_domain *domain; - irq_hw_number_t hwirq; - unsigned int type = IRQ_TYPE_NONE; unsigned int virq; - domain = irq_data->np ? irq_find_host(irq_data->np) : irq_default_domain; - if (!domain) { - pr_warn("no irq domain found for %s !\n", - of_node_full_name(irq_data->np)); - return 0; - } - - /* If domain has no translation, then we assume interrupt line */ - if (domain->ops->xlate == NULL) - hwirq = irq_data->args[0]; - else { - if (domain->ops->xlate(domain, irq_data->np, irq_data->args, - irq_data->args_count, &hwirq, &type)) - return 0; - } - /* Create mapping */ virq = irq_create_mapping(domain, hwirq); if (!virq) @@ -499,7 +488,7 @@ unsigned int irq_create_of_mapping(struct of_phandle_args *irq_data) irq_set_irq_type(virq, type); return virq; } -EXPORT_SYMBOL_GPL(irq_create_of_mapping); +EXPORT_SYMBOL_GPL(irq_create_mapping_type); #ifdef CONFIG_ACPI unsigned int irq_create_acpi_mapping(irq_hw_number_t hwirq, -- 1.7.9.5

11 years, 8 months

2
7
0 0

[PATCH v3 0/5] Hardware Reduced Mode Cleanup for ACPI

by al.stone＠linaro.org

From: Al Stone <al.stone(a)linaro.org> This series of patches starts with Hanjun's patch to create a kernel config item for CONFIG_ACPI_REDUCED_HARDWARE [0]. Building on that, I then reviewed all of the code that touched any of several fields in the FADT that the OSPM is supposed to ignore when ACPI is in Hardware Reduced mode [1]. Any time there was a use of one of the fields to be ignored, I evaluated whether or not the code was implementing Hardware Reduced mode correctly. Similarly, for each the flags in the FADT flags field that are to be ignored in Hardware Reduced mode, the kernel code was again scanned for proper usage. The remainder of the patches are to fix all of the situations I could find where the kernel would not behave correctly in this ACPI mode. These seem to work just fine on the RTSM model for ARMv7, both with and without ACPI enabled, and with and without ACPI_REDUCED_HARDWARE enabled; similarly for the FVP model for ARMv8. The patches for ACPI on ARM hardware have been submitted elsewhere but they presume that reduced HW mode is functioning correctly. In the meantime, there's no way I can think of to test all possible scenarios so feedback would be greatly appreciated. [0] List at https://wiki.linaro.org/LEG/Engineering/Kernel/ACPI/AcpiReducedHw#Section_5… [1] Please see the ACPI Specification v5.0 for details on Hardware Reduced mode (sections 3.11.1, 4.1, 5.2.9, at a minimum). Changes for v3: -- Modified enabling ACPI_REDUCED_HARDWARE in ACPICA when using kernel config item CONFIG_ACPI_REDUCED_HARDWARE; now consistent with ACPICA code base where needed -- Enable X86 for CONFIG_ACPI_REDUCED_HARDWARE -- Minimize bus master reload patching -- Remove unneeded patch for dmi_check_system() (was 4/6) -- Correct the patch for removing unneeded map/unmap of FADT fields Changes for v2: -- Remove patch that was outside of reduced HW mode changes -- Simplify CONFIG_ACPI_REDUCED_HARDWARE in Kconfig -- Simplify use of CONFIG_ACPI_REDUCED_HARDWARE in #ifdefs -- Ensure changelogs are present -- Combine and simplify previous patches 8 & 10 Al Stone (5): ACPI: introduce CONFIG_ACPI_REDUCED_HARDWARE to enable this ACPI mode ACPI: bus master reload not supported in reduced HW mode ACPI: HW reduced mode does not allow use of the FADT sci_interrupt field ACPI: in HW reduced mode, using FADT PM information is not allowed. ACPI: do not map/unmap memory regions for FADT entries in reduced HW mode drivers/acpi/Kconfig | 8 ++++++++ drivers/acpi/bus.c | 3 ++- drivers/acpi/osl.c | 36 +++++++++++++++++------------------- drivers/acpi/pci_link.c | 2 ++ drivers/acpi/processor_idle.c | 15 +++++++++++++-- include/acpi/platform/aclinux.h | 6 ++++++ 6 files changed, 48 insertions(+), 22 deletions(-) -- 1.8.3.1

11 years, 8 months

6
14
0 0

[PATCH] rtsm_ve-aemv8a: add ASL for fixed regulator

by Graeme Gregory

Signed-off-by: Graeme Gregory <graeme.gregory(a)linaro.org> --- platforms/rtsm_ve-aemv8a.acpi/dsdt.asl | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/platforms/rtsm_ve-aemv8a.acpi/dsdt.asl b/platforms/rtsm_ve-aemv8a.acpi/dsdt.asl index 8cea035..a230d07 100644 --- a/platforms/rtsm_ve-aemv8a.acpi/dsdt.asl +++ b/platforms/rtsm_ve-aemv8a.acpi/dsdt.asl @@ -436,6 +436,25 @@ DefinitionBlock ( Return (0x00) } + Device (REG0) { + Name (_HID, "LNRO0019") + Name (_UID, 0) + + Method(_DSM, 4, NotSerialized) { + Store (Package (8) + { + "regulator-name", "3V3", + "regulator-min-microvolt", "3300000", + "regulator-max-microvolt", "3300000", + "regulator-always-on", "1", + }, Local0) + + DTGP (Arg0, Arg1, Arg2, Arg3, RefOf (Local0)) + + Return (Local0) + } + } + Device (AMBA) { Name (_HID, "AMBA0000") Name (_UID, 0) -- 1.8.4.2

11 years, 8 months

1
0
0 0

[linaro-acpi 0/4] acpi-asl: DBG2 table support

by naresh.bhat＠linaro.org

From: Naresh Bhat <naresh.bhat(a)linaro.org> The DBG2 table support in iASL compiler is completed which will be available in next release of acpica https://github.com/acpica/acpica/commit/278cbb119f090d3aad0480381126c1ae8e5… the following set of patches support the DBG2 table in acpi-asl tool. Naresh Bhat (4): ACPI / ASL: Add DBG2 table across platforms DBG2: Update platforms manifest DBG2: Update xsdt entries across platforms DBG2: Support DBG2 table compilation platforms/exynos5250-arndale.acpi/dbg2.asl | 106 ++++++++++++++++++++ .../exynos5250-arndale.manifest | 1 + platforms/exynos5250-arndale.acpi/xsdt.asl | 1 + platforms/foundation-v8.acpi/dbg2.asl | 106 ++++++++++++++++++++ .../foundation-v8.acpi/foundation-v8.manifest | 1 + platforms/foundation-v8.acpi/xsdt.asl | 1 + platforms/rtsm_ve-aemv8a.acpi/dbg2.asl | 106 ++++++++++++++++++++ .../rtsm_ve-aemv8a.acpi/rtsm_ve-aemv8a.manifest | 1 + platforms/rtsm_ve-aemv8a.acpi/xsdt.asl | 1 + tools/common/build_aml.c | 1 + tools/common/check_aml.c | 1 + tools/common/include/check_aml.h | 1 + 12 files changed, 327 insertions(+) create mode 100644 platforms/exynos5250-arndale.acpi/dbg2.asl create mode 100644 platforms/foundation-v8.acpi/dbg2.asl create mode 100644 platforms/rtsm_ve-aemv8a.acpi/dbg2.asl -- 1.7.9.5

11 years, 8 months

4
8
0 0

[PATCH] acpi, mtd: Add support for flash device in physical memory map based on ACPI description

by Tomasz Nowicki

This provides a 'mapping' driver which allows the NOR Flash and ROM driver code to communicate with chips which are mapped physically into the CPU's memory. The mapping description here is taken from DSDT ACPI table. This code was "inspired" by physmap_of.c Signed-off-by: Tomasz Nowicki <tomasz.nowicki(a)linaro.org> --- drivers/acpi/acpi_platform.c | 4 + drivers/mtd/maps/Kconfig | 9 + drivers/mtd/maps/Makefile | 1 + drivers/mtd/maps/physmap_acpi.c | 437 +++++++++++++++++++++++++++++++++++++++ 4 files changed, 451 insertions(+) create mode 100644 drivers/mtd/maps/physmap_acpi.c diff --git a/drivers/acpi/acpi_platform.c b/drivers/acpi/acpi_platform.c index 1359eda..4afc430 100644 --- a/drivers/acpi/acpi_platform.c +++ b/drivers/acpi/acpi_platform.c @@ -36,6 +36,10 @@ static const struct acpi_device_id acpi_platform_device_ids[] = { { "LNRO0007" }, /* armv8 pmu */ { "LNRO0009" }, /* vexpress-sysreg */ { "LNRO000A" }, /* uart-pl011 */ + { "LNRO000B" }, /* flash cfi_probe */ + { "LNRO000C" }, /* flash jedec_probe */ + { "LNRO000D" }, /* flash map_ram */ + { "LNRO000E" }, /* flash direct-mapped */ { } }; diff --git a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig index 310dc7c..07d26e0 100644 --- a/drivers/mtd/maps/Kconfig +++ b/drivers/mtd/maps/Kconfig @@ -74,6 +74,15 @@ config MTD_PHYSMAP_OF physically into the CPU's memory. The mapping description here is taken from OF device tree. +config MTD_PHYSMAP_ACPI + tristate "Flash device in physical memory map based on ACPI description" + depends on ACPI && (MTD_CFI || MTD_JEDECPROBE || MTD_ROM) + help + This provides a 'mapping' driver which allows the NOR Flash and + ROM driver code to communicate with chips which are mapped + physically into the CPU's memory. The mapping description here is + taken from DSDT ACPI table. + config MTD_PMC_MSP_EVM tristate "CFI Flash device mapped on PMC-Sierra MSP" depends on PMC_MSP && MTD_CFI diff --git a/drivers/mtd/maps/Makefile b/drivers/mtd/maps/Makefile index 141c91a..379cfff 100644 --- a/drivers/mtd/maps/Makefile +++ b/drivers/mtd/maps/Makefile @@ -18,6 +18,7 @@ obj-$(CONFIG_MTD_TSUNAMI) += tsunami_flash.o obj-$(CONFIG_MTD_PXA2XX) += pxa2xx-flash.o obj-$(CONFIG_MTD_PHYSMAP) += physmap.o obj-$(CONFIG_MTD_PHYSMAP_OF) += physmap_of.o +obj-$(CONFIG_MTD_PHYSMAP_ACPI) += physmap_acpi.o obj-$(CONFIG_MTD_PISMO) += pismo.o obj-$(CONFIG_MTD_PMC_MSP_EVM) += pmcmsp-flash.o obj-$(CONFIG_MTD_PCMCIA) += pcmciamtd.o diff --git a/drivers/mtd/maps/physmap_acpi.c b/drivers/mtd/maps/physmap_acpi.c new file mode 100644 index 0000000..0973e00 --- /dev/null +++ b/drivers/mtd/maps/physmap_acpi.c @@ -0,0 +1,437 @@ +/* + * Flash mappings described by the ACPI + * + * Copyright (C) 2006 MontaVista Software Inc. + * Author: Vitaly Wool <vwool(a)ru.mvista.com> + * Copyright (C) 2007 David Gibson, IBM Corporation. + * + * Revised to handle ACPI style flash binding by: + * Copyright (C) 2013 Tomasz Nowicki <tomasz.nowicki(a)linaro.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <linux/module.h> +#include <linux/types.h> +#include <linux/init.h> +#include <linux/device.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/map.h> +#include <linux/mtd/partitions.h> +#include <linux/mtd/concat.h> +#include <linux/acpi.h> +#include <linux/slab.h> +#include <linux/platform_device.h> + +struct acpi_flash_list { + struct mtd_info *mtd; + struct map_info map; + struct resource *res; +}; + +struct acpi_flash { + struct mtd_info *cmtd; + int list_size; /* number of elements in acpi_flash_list */ + struct acpi_flash_list list[0]; +}; + +/* UUID: ce511ba0-52bf-11e3-8f96-0800200c9a66 (randomly generated) */ +static const char device_label_dsm_uuid[] = { + 0xA0, 0x1B, 0x51, 0xCE, + 0xBF, 0x52, + 0xE3, 0x11, + 0x8F, 0x96, + 0x08, 0x00, 0x20, 0xC, 0x9A, 0x66 +}; + +static inline void acpi_flash_assign_params(union acpi_object params[4]) +{ + params[0].type = ACPI_TYPE_BUFFER; /* UUID */ + params[0].buffer.length = sizeof(device_label_dsm_uuid); + params[0].buffer.pointer = (char *)device_label_dsm_uuid; + params[1].type = ACPI_TYPE_INTEGER; /* Revision */ + params[1].integer.value = 1; + params[2].type = ACPI_TYPE_INTEGER; /* Function # */ + params[2].integer.value = 1; + params[3].type = ACPI_TYPE_PACKAGE; /* Arguments */ + params[3].package.count = 0; + params[3].package.elements = NULL; +} + +static int acpi_flash_call_dsm(acpi_handle handler, const char *key, + const void *value, + acpi_object_type return_type) +{ + union acpi_object *obj, *element; + struct acpi_object_list input; + union acpi_object params[4]; + acpi_status status; + char **char_ptr; + char *string; + u64 *int_ptr; + int len, i; + struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; + + input.count = 4; + acpi_flash_assign_params(params); + input.pointer = params; + status = acpi_evaluate_object_typed(handler, "_DSM", &input, &output, + ACPI_TYPE_PACKAGE); + if (ACPI_FAILURE(status)) { + pr_err("Failed to get _DSM package for this device\n"); + return -ENXIO; + } + + obj = (union acpi_object *)output.pointer; + + /* Parse 2 objects per entry */ + for (i = 0; i < obj->package.count; i += 2) { + element = &obj->package.elements[i]; + + /* Key must be a string */ + len = element->string.length; + if ((element->type != ACPI_TYPE_STRING) || + (element->string.length <= 0)) + continue; + + /* Check to see if this is requested key */ + if (strncmp(key, element->string.pointer, + len) != 0) + continue; + + /* If value type is correct, this is the one */ + element++; + if (element->type != return_type) + continue; + + switch (return_type) { + case (ACPI_TYPE_INTEGER): + int_ptr = (u64 *)value; + *int_ptr = element->integer.value; + goto found; + case (ACPI_TYPE_STRING): + len = element->string.length; + if (len <= 0) + continue; + + string = kmalloc(len + 1, GFP_KERNEL); + strncpy(string, element->string.pointer, len); + string[len] = '\0'; + + char_ptr = (char **)value; + *char_ptr = string; + goto found; + } + } + status = -ENXIO; + +found: + kfree(output.pointer); + return status; +} + +static const char * const rom_probe_types[] = { + "cfi_probe", "jedec_probe", "map_rom" }; + +/* Helper function to handle probing of the obsolete "direct-mapped" + * compatible binding, which has an extra "probe-type" property + * describing the type of flash probe necessary. */ +static struct mtd_info *obsolete_probe(struct platform_device *dev, + struct map_info *map) +{ + acpi_handle handler; + const char *acpi_probe; + struct mtd_info *mtd; + int i, err; + + handler = ACPI_HANDLE(&dev->dev); + dev_warn(&dev->dev, "ACPI uses obsolete \"direct-mapped\" flash " + "binding\n"); + + err = acpi_flash_call_dsm(handler, "probe-type", &acpi_probe, + ACPI_TYPE_STRING); + if (err || acpi_probe == NULL) { + for (i = 0; i < ARRAY_SIZE(rom_probe_types); i++) { + mtd = do_map_probe(rom_probe_types[i], map); + if (mtd) + return mtd; + } + return NULL; + } else if (strcmp(acpi_probe, "CFI") == 0) { + return do_map_probe("cfi_probe", map); + } else if (strcmp(acpi_probe, "JEDEC") == 0) { + return do_map_probe("jedec_probe", map); + } else { + if (strcmp(acpi_probe, "ROM") != 0) + dev_warn(&dev->dev, "obsolete_probe: don't know probe " + "type '%s', mapping as rom\n", acpi_probe); + return do_map_probe("mtd_rom", map); + } +} + +/* When partitions are set we look for a linux,part-probe property which + specifies the list of partition probers to use. If none is given then the + default is use. These take precedence over other device tree + information. */ +static const char * const part_probe_types_def[] = { + "cmdlinepart", "RedBoot", NULL }; + +static const char * const *acpi_get_part_probes(acpi_handle handler) +{ + char *cp = NULL; + unsigned int count = 0, i; + const char **res; + int cplen, err; + + /* Get space separated strings */ + err = acpi_flash_call_dsm(handler, "linux,part-probe", &cp, + ACPI_TYPE_STRING); + if (err || cp == NULL) + return part_probe_types_def; + + cplen = strlen(cp); + for (i = 0; i != cplen; i++) + if (cp[i] == ' ') + count++; + + /* Create the table with references to strings */ + res = kzalloc((count + 1) * sizeof(char *), GFP_KERNEL); + for (i = 0; i < count + 1; i++) { + res[i] = cp; + cp = strnchr(cp, cplen, ' '); + if (cp == NULL) + break; + + *cp++ = '\0'; + cplen = strlen(cp); + } + return res; +} + +static void acpi_free_probes(const char * const *probes) +{ + if (probes != part_probe_types_def) + kfree(probes); +} + +static const struct acpi_device_id acpi_flash_match[]; +static int acpi_flash_remove(struct platform_device *dev); + +static int acpi_flash_probe(struct platform_device *dev) +{ + const char * const *part_probe_types; + const struct acpi_device_id *id; + resource_size_t res_size; + struct acpi_flash *info; + const char *probe_type; + struct resource *res; + acpi_handle handler; + int err, i; + const u64 bank_width = 0, map_indirect = 0; + struct mtd_info **mtd_list = NULL; + const char *mtd_name = NULL; + int count = 0; + + handler = ACPI_HANDLE(&dev->dev); + + id = acpi_match_device(acpi_flash_match, &dev->dev); + if (!id) + return -ENODEV; + + probe_type = (const char *)id->driver_data; + + acpi_flash_call_dsm(handler, "linux,mtd-name", &mtd_name, + ACPI_TYPE_STRING); + acpi_flash_call_dsm(handler, "no-unaligned-direct-access", + &map_indirect, ACPI_TYPE_INTEGER); + + while (platform_get_resource(dev, IORESOURCE_MEM, count)) + count++; + + if (!count) { + dev_err(&dev->dev, "No resources found for %s device\n", + dev_name(&dev->dev)); + err = -ENXIO; + goto err_flash_remove; + } + + info = devm_kzalloc(&dev->dev, + sizeof(struct acpi_flash) + + sizeof(struct acpi_flash_list) * count, GFP_KERNEL); + if (!info) { + err = -ENOMEM; + goto err_flash_remove; + } + + dev_set_drvdata(&dev->dev, info); + + mtd_list = kzalloc(sizeof(*mtd_list) * count, GFP_KERNEL); + if (!mtd_list) + goto err_flash_remove; + + for (i = 0; i < count; i++) { + res = platform_get_resource(dev, IORESOURCE_MEM, i); + dev_dbg(&dev->dev, "resource[%d]: address 0x%lx size 0x%lx\n", + i, (long)res->start, (long)resource_size(res)); + + res_size = resource_size(res); + info->list[i].res = request_mem_region(res->start, res_size, + dev_name(&dev->dev)); + if (!info->list[i].res) { + err = -EBUSY; + goto err_out; + } + + /* Mandatory property */ + err = acpi_flash_call_dsm(handler, "bank-width", &bank_width, + ACPI_TYPE_INTEGER); + if (err || !bank_width) { + dev_err(&dev->dev, "Can't get bank width from DSDT\n"); + goto err_out; + } + + info->list[i].map.name = mtd_name ?: dev_name(&dev->dev); + info->list[i].map.phys = res->start; + info->list[i].map.size = res_size; + info->list[i].map.bankwidth = bank_width; + info->list[i].map.virt = ioremap(info->list[i].map.phys, + info->list[i].map.size); + if (!info->list[i].map.virt) { + dev_err(&dev->dev, "Failed to ioremap() flash region\n"); + err = -ENOMEM; + goto err_out; + } + + simple_map_init(&info->list[i].map); + + /* + * On some platforms (e.g. MPC5200) a direct 1:1 mapping + * may cause problems with JFFS2 usage, as the local bus (LPB) + * doesn't support unaligned accesses as implemented in the + * JFFS2 code via memcpy(). By setting NO_XIP, the + * flash will not be exposed directly to the MTD users + * (e.g. JFFS2) any more. + */ + if (map_indirect) + info->list[i].map.phys = NO_XIP; + + if (probe_type) { + info->list[i].mtd = do_map_probe(probe_type, + &info->list[i].map); + } else { + info->list[i].mtd = obsolete_probe(dev, + &info->list[i].map); + } + + if (!info->list[i].mtd) { + dev_err(&dev->dev, "do_map_probe() failed\n"); + err = -ENXIO; + goto err_out; + } else + info->list_size++; + + info->list[i].mtd->owner = THIS_MODULE; + info->list[i].mtd->dev.parent = &dev->dev; + mtd_list[i] = info->list[i].mtd; + } + + info->cmtd = NULL; + if (info->list_size == 1) { + info->cmtd = info->list[0].mtd; + } else if (info->list_size > 1) { + /* + * We detected multiple devices. Concatenate them together. + */ + info->cmtd = mtd_concat_create(mtd_list, info->list_size, + dev_name(&dev->dev)); + } + if (info->cmtd == NULL) { + err = -ENXIO; + goto err_out; + } + + part_probe_types = acpi_get_part_probes(handler); + mtd_device_parse_register(info->cmtd, part_probe_types, NULL, + NULL, 0); + acpi_free_probes(part_probe_types); + + kfree(mtd_list); + + return 0; + +err_out: + kfree(mtd_list); +err_flash_remove: + acpi_flash_remove(dev); + + return err; +} + +static int acpi_flash_remove(struct platform_device *dev) +{ + struct acpi_flash *info; + int i; + + info = dev_get_drvdata(&dev->dev); + if (!info) + return 0; + dev_set_drvdata(&dev->dev, NULL); + + if (info->cmtd != info->list[0].mtd) { + mtd_device_unregister(info->cmtd); + mtd_concat_destroy(info->cmtd); + } + + if (info->cmtd) + mtd_device_unregister(info->cmtd); + + for (i = 0; i < info->list_size; i++) { + if (info->list[i].mtd) + map_destroy(info->list[i].mtd); + + if (info->list[i].map.virt) + iounmap(info->list[i].map.virt); + + if (info->list[i].res) { + release_resource(info->list[i].res); + kfree(info->list[i].res); + } + } + + return 0; +} + +static const struct acpi_device_id acpi_flash_match[] = { + { "LNRO000B", (unsigned long)"cfi_probe"}, + { "LNRO000C", (unsigned long)"jedec_probe"}, + { "LNRO000D", (unsigned long)"map_ram"}, + { "LNRO000E", (unsigned long)"direct-mapped"}, + {}, +}; +MODULE_DEVICE_TABLE(acpi, acpi_flash_match); + +static struct platform_driver acpi_flash_driver = { + .driver = { + .name = "acpi-flash", + .owner = THIS_MODULE, + .acpi_match_table = ACPI_PTR(acpi_flash_match), + }, + .probe = acpi_flash_probe, + .remove = acpi_flash_remove, +}; + +module_platform_driver(acpi_flash_driver); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Tomasz Nowicki <tomasz.nowicki(a)linaro.org>"); +MODULE_DESCRIPTION("ACPI based MTD map driver"); -- 1.7.9.5

11 years, 8 months

3
7
0 0

[PATCH v2 0/6] Hardware Reduced Mode cleanup for ACPI

by al.stone＠linaro.org

From: Al Stone <al.stone(a)linaro.org> This series of patches starts with Hanjun's patch to create a kernel config item for CONFIG_ACPI_REDUCED_HARDWARE [0]. Building on that, I then reviewed all of the code that touched any of several fields in the FADT that the OSPM is supposed to ignore when ACPI is in Hardware Reduced mode [1]. Any time there was a use of one of the fields to be ignored, I evaluated whether or not the code was implementing Hardware Reduced mode correctly. Similarly, for each the flags in the FADT flags field that are to be ignored in Hardware Reduced mode, the kernel code was again scanned for proper usage. The remainder of the patches are to fix all of the situations I could find where the kernel would not behave correctly in this ACPI mode. These seem to work just fine on the RTSM model for ARMv7, both with and without ACPI enabled, and with and without ACPI_REDUCED_HARDWARE enabled; similarly for the FVP model for ARMv8. The patches for ACPI on ARM hardware will be coming later but they presume that reduced HW mode is functioning correctly. In the meantime, there's no way I can think of to test all possible scenarios so feedback would be greatly appreciated. [0] List at https://wiki.linaro.org/LEG/Engineering/Kernel/ACPI/AcpiReducedHw#Section_5… [1] Please see the ACPI Specification v5.0 for details on Hardware Reduced mode. Changes for v2: -- Remove patch that was outside of reduced HW mode changes -- Simplify CONFIG_ACPI_REDUCED_HARDWARE in Kconfig -- Simplify use of CONFIG_ACPI_REDUCED_HARDWARE in #ifdefs -- Ensure changelogs are present -- Combine and simplify previous patches 8 & 10 Al Stone (6): ACPI: introduce CONFIG_ACPI_REDUCED_HARDWARE to enable this ACPI mode ACPI: bus master reload not supported in reduced HW mode ACPI: HW reduced mode does not allow use of the FADT sci_interrupt field ACPI: ARM: exclude DMI calls ACPI: do not reserve memory regions for some FADT entries in HW reduced mode ACPI: in HW reduced mode, using FADT PM information is not allowed. drivers/acpi/Kconfig | 8 ++++++++ drivers/acpi/bus.c | 3 ++- drivers/acpi/osl.c | 24 ++++++++++++------------ drivers/acpi/pci_link.c | 2 ++ drivers/acpi/processor_idle.c | 16 ++++++++++++++-- include/acpi/platform/aclinux.h | 4 ++++ include/linux/dmi.h | 2 +- 7 files changed, 43 insertions(+), 16 deletions(-) -- 1.8.3.1

11 years, 8 months

9
24
0 0

[RFC part2 PATCH 0/9] Using ACPI MADT table to initialise SMP and GIC

by Hanjun Guo

This patch set is based on part1 "Make ACPI core running on ARM64" patch set. After we can get the ACPI tables from UEFI, we can use these tables to initialise the system now. GIC (means GIC cpu interface) structure and GIC distributor structure in MADT table contains the information of GIC cpu interface base address and GIC distributor base address, which can be used to initialise GIC. Further more, parked address in GIC structure can be used as cpu release address for spin table SMP initialisation. This patch set use these information to init SMP and GIC. Please refer to chapter 5.2.12.14/15 of ACPI 5.0 spec for GIC and GIC distributor structure information. Amit Daniel Kachhap (1): irqdomain: Add a new API irq_create_acpi_mapping() Hanjun Guo (8): ARM64 / ACPI: Implement core functions for parsing MADT table ARM64 / ACPI: Prefill cpu possible/present maps and map logical cpu id to APIC id ARM64 / ACPI: Introduce map_gic_id() to get apic id from MADT or _MAT method ARM64 / ACPI: Use Parked Address in GIC structure for spin table SMP initialisation ACPI: Define ACPI_IRQ_MODEL_GIC needed for arm Irqchip / gic: Set as default domain so we can access from ACPI ACPI / ARM64: Update acpi_register_gsi to register with the core IRQ subsystem ACPI / GIC: Initialize GIC using the information in MADT arch/arm64/include/asm/acpi.h | 16 +- arch/arm64/kernel/irq.c | 5 + arch/arm64/kernel/setup.c | 2 + arch/arm64/kernel/smp.c | 2 + arch/arm64/kernel/smp_spin_table.c | 16 +- drivers/acpi/bus.c | 3 + drivers/acpi/plat/arm-core.c | 397 +++++++++++++++++++++++++++++++++++- drivers/acpi/processor_core.c | 26 +++ drivers/acpi/tables.c | 21 ++ drivers/irqchip/irq-gic.c | 7 + include/linux/acpi.h | 9 + kernel/irq/irqdomain.c | 27 +++ 12 files changed, 521 insertions(+), 10 deletions(-) -- 1.7.9.5

11 years, 8 months

8
29
0 0

[PATCH] rtsm_ve-aemv8a: Add ASL for bus device enumeration

by naresh.bhat＠linaro.org

From: Naresh Bhat <naresh.bhat(a)linaro.org> Add ASL for AMBA bus and devices on rtsm_ve-aemv8a platform. Signed-off-by: Naresh Bhat <naresh.bhat(a)linaro.org> --- platforms/rtsm_ve-aemv8a.acpi/dsdt.asl | 416 +++++++++++++++++++++++++++++++- 1 file changed, 413 insertions(+), 3 deletions(-) diff --git a/platforms/rtsm_ve-aemv8a.acpi/dsdt.asl b/platforms/rtsm_ve-aemv8a.acpi/dsdt.asl index 76ddfa3..8cea035 100644 --- a/platforms/rtsm_ve-aemv8a.acpi/dsdt.asl +++ b/platforms/rtsm_ve-aemv8a.acpi/dsdt.asl @@ -266,6 +266,74 @@ DefinitionBlock ( } } + Device (PMU0) { + Name (_HID, "LNRO0007") + Name (_UID, 0) + + Method (_CRS, 0x0, Serialized) { + Name (RBUF, ResourceTemplate () { + Interrupt (ResourceConsumer, Level, ActiveHigh, Exclusive, , , ) {92, 93, 94, 95} + }) + Return (RBUF) + } + } + + Device (SMB) { + Name (_HID, "ACPI0004") + Name (_UID, 0) + + Name (_CRS, ResourceTemplate () { + + DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, NonCacheable, ReadWrite, + 0x00000000, // Address Space Granularity + 0x08000000, // Address Range Minimum (base address in FDT) + 0x0BFFFFFF, // Address Range Maximum (base + (len-1)) + 0x00000000, // Address Translation Offset + 0x04000000, // Address Length (len in FDT) + ,, , AddressRangeMemory, TypeStatic) + + DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, NonCacheable, ReadWrite, + 0x00000000, // Address Space Granularity + 0x14000000, // Address Range Minimum (base address in FDT) + 0x17FFFFFF, // Address Range Maximum (base + (len-1)) + 0x00000000, // Address Translation Offset + 0x04000000, // Address Length (len in FDT) + ,, , AddressRangeMemory, TypeStatic) + + DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, NonCacheable, ReadWrite, + 0x00000000, // Address Space Granularity + 0x18000000, // Address Range Minimum (base address in FDT) + 0x1BFFFFFF, // Address Range Maximum (base + (len-1)) + 0x00000000, // Address Translation Offset + 0x04000000, // Address Length (len in FDT) + ,, , AddressRangeMemory, TypeStatic) + + DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, NonCacheable, ReadWrite, + 0x00000000, // Address Space Granularity + 0x1C000000, // Address Range Minimum (base address in FDT) + 0x1FFFFFFF, // Address Range Maximum (base + (len -1)) + 0x00000000, // Address Translation Offset + 0x04000000, // Address Length (len in FDT) + ,, , AddressRangeMemory, TypeStatic) + + DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, NonCacheable, ReadWrite, + 0x00000000, // Address Space Granularity + 0x0C000000, // Address Range Minimum (base address in FDT) + 0x0FFFFFFF, // Address Range Maximum (base + (len-1)) + 0x00000000, // Address Translation Offset + 0x04000000, // Address Length (len in FDT) + ,, , AddressRangeMemory, TypeStatic) + + DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, NonCacheable, ReadWrite, + 0x00000000, // Address Space Granularity + 0x10000000, // Address Range Minimum (base address in FDT) + 0x13FFFFFF, // Address Range Maximum (base + (len-1)) + 0x00000000, // Address Translation Offset + 0x04000000, // Address Length (len in FDT) + ,, , AddressRangeMemory, TypeStatic) + + }) + Device (NET0) { Name (_HID, "LNRO0003") Name (_UID, 0) @@ -279,16 +347,358 @@ DefinitionBlock ( } } - Device (PMU0) { - Name (_HID, "LNRO0007") + Device (CLK0) { + Name (_HID, "LNRO0008") + Name (_UID, 0) + + Method (FREQ, 0x0, NotSerialized) { + Return (24000000) + } + } + + Device (CLK1) { + Name (_HID, "LNRO0008") + Name (_UID, 1) + + Method (FREQ, 0x0, NotSerialized) { + Return (1000000) + } + } + + Device (CLK2) { + Name (_HID, "LNRO0008") + Name (_UID, 2) + + Method (FREQ, 0x0, NotSerialized) { + Return (32768) + } + } + + Device (FPGA) { + Name (_HID, "ACPI0004") + Name (_UID, 0) + + Name (_CRS, ResourceTemplate () { + + DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, NonCacheable, ReadWrite, + 0x00000000, // Address Space Granularity + 0x1C000000, // Address Range Minimum (base address in FDT) + 0x1C1FFFFF, // Address Range Maximum (base + (len-1)) + 0x00000000, // Address Translation Offset + 0x00200000, // Address Length (len in FDT) + ,, , AddressRangeMemory, TypeStatic) + }) + + Device (VIRT) { + Name (_HID, "LNRO0005") + Name (_UID, 0) + + Method (_CRS, 0x0, Serialized) { + Name (RBUF, ResourceTemplate() { + Memory32Fixed (ReadWrite, 0x1c130000, 0x1000) + Interrupt (ResourceConsumer, Level, ActiveHigh, Exclusive, , , ) {0x4A} + }) + Return (RBUF) + } + } + } // End of FPGA + } // End SMB + + Method (DTGP, 5, NotSerialized) + { + If (LEqual (Arg0, Buffer (0x10) + { + /* UUID: a706b112-bf0b-48d2-9fa3-95591a3c4c06 */ + /* 0000 */ 0xa7, 0x06, 0xb1, 0x12, 0xbf, 0x0b, 0x48, 0xd2, + /* 0008 */ 0x9f, 0xa3, 0x95, 0x59, 0x1a, 0x3c, 0x4c, 0x06 + })) + { + If (LEqual (Arg1, 0x01)) { + If (LEqual (Arg2, 0x00)) { + Store (Buffer (0x01) + { + 0x03 + }, Arg4) + Return (0x01) + } + + If (LEqual (Arg2, 0x01)) { + Return (0x01) + } + } + } + + Store (Buffer (0x01) + { + 0x00 + }, Arg4) + + Return (0x00) + } + + Device (AMBA) { + Name (_HID, "AMBA0000") + Name (_UID, 0) + + /* Define 'apb_pclk' as a default clock source since it is + common with devices below */ + + Method(_DSM, 4, NotSerialized) { + Store (Package (2) + { + "clock-name", "apb_pclk \\_SB.SMB.CLK0", + }, Local0) + + DTGP (Arg0, Arg1, Arg2, Arg3, RefOf (Local0)) + + Return (Local0) + } + + Device (SCT0) { + Name (_HID, "LNRO000C") + Name (_UID, 0) + Name (_ADR, 0x1c020000) /* SYSCTL */ + Method (_CRS, 0x0, Serialized) { + Name (RBUF, ResourceTemplate () { + Memory32Fixed (ReadWrite, 0x1c020000, 0x00001000) + }) + Return (RBUF) + } + Method(_DSM, 4, Serialized) { + Store (Package (4) + { + "clock-name", "refclk \\_SB.SMB.CLK2", + "clock-name", "timclk \\_SB.SMB.CLK1", + }, Local0) + + DTGP (Arg0, Arg1, Arg2, Arg3, RefOf (Local0)) + + Return (Local0) + } + } + + Device (AAC0) { + Name (_HID, "LNRO000D") + Name (_UID, 0) + Name (_ADR, 0x1c040000) /* AACI */ + Method (_CRS, 0x0, Serialized) { + Name (RBUF, ResourceTemplate () { + Memory32Fixed (ReadWrite, 0x1c040000, 0x00001000) + Interrupt (ResourceConsumer, Edge, ActiveBoth, + Exclusive, , , ) {43} + }) + Return (RBUF) + } + } + + Device (MMC0) { + Name (_HID, "LNRO000E") Name (_UID, 0) + Name (_ADR, 0x1c050000) /* MMCI */ + Method (_CRS, 0x0, Serialized) { + Name (RBUF, ResourceTemplate () { + Memory32Fixed (ReadWrite, 0x1c050000, 0x00001000) + Interrupt (ResourceConsumer, Edge, ActiveBoth, + Exclusive, , , ) {41, 42} + }) + Return (RBUF) + } + Method(_DSM, 4, Serialized) { + Store (Package (2) + { + "clock-name", "MCLK \\_SB.SMB.CLK0", + }, Local0) + + DTGP (Arg0, Arg1, Arg2, Arg3, RefOf (Local0)) + Return (Local0) + } + } + + Device (KMI0) { + Name (_HID, "LNRO000F") + Name (_UID, 0) + Name (_ADR, 0x1c060000) Method (_CRS, 0x0, Serialized) { Name (RBUF, ResourceTemplate () { - Interrupt (ResourceConsumer, Level, ActiveHigh, Exclusive, , , ) {92, 93, 94, 95} + Memory32Fixed (ReadWrite, 0x1c060000, 0x00001000) + Interrupt (ResourceConsumer, Edge, ActiveBoth, + Exclusive, , , ) {44} + }) + Return (RBUF) + } + Method(_DSM, 4, Serialized) { + Store (Package (2) + { + "clock-name", "KMIREFCLK \\_SB.SMB.CLK0", + }, Local0) + + DTGP (Arg0, Arg1, Arg2, Arg3, RefOf (Local0)) + + Return (Local0) + } + } + + Device (KMI1) { + Name (_HID, "LNRO000F") + Name (_UID, 1) + Name (_ADR, 0x1c070000) + Method (_CRS, 0x0, Serialized) { + Name (RBUF, ResourceTemplate () { + Memory32Fixed (ReadWrite, 0x1c070000, 0x00001000) + Interrupt (ResourceConsumer, Edge, ActiveBoth, + Exclusive, , , ) {45} + }) + Return (RBUF) + } + Method(_DSM, 4, NotSerialized) { + Store (Package (2) + { + "clock-name", "KMIREFCLK \\_SB.SMB.CLK0", + }, Local0) + + DTGP (Arg0, Arg1, Arg2, Arg3, RefOf (Local0)) + + Return (Local0) + } + } + + Device (SER0) { + Name (_HID, "LNRO000A") + Name (_ADR, 0x1c090000) + Name (_UID, 0) + + Method (_CRS, 0x0, Serialized) { + Name (RBUF, ResourceTemplate() { + Memory32Fixed (ReadWrite, 0x1c090000, 0x1000) + Interrupt (ResourceConsumer, Edge, ActiveBoth, Exclusive, , , ) {0x25} + }) + Return (RBUF) + } + } + + Device (SER1) { + Name (_HID, "LNRO000A") + Name (_ADR, 0x1c0a0000) + Name (_UID, 1) + + Method (_CRS, 0x0, Serialized) { + Name (RBUF, ResourceTemplate() { + Memory32Fixed (ReadWrite, 0x1c0a0000, 0x1000) + Interrupt (ResourceConsumer, Edge, ActiveBoth, Exclusive, , , ) {0x26} + }) + Return (RBUF) + } + } + + Device (SER2) { + Name (_HID, "LNRO000A") + Name (_ADR, 0x1c0b0000) + Name (_UID, 2) + + Method (_CRS, 0x0, Serialized) { + Name (RBUF, ResourceTemplate() { + Memory32Fixed (ReadWrite, 0x1c0b0000, 0x1000) + Interrupt (ResourceConsumer, Edge, ActiveBoth, Exclusive, , , ) {0x27} + }) + Return (RBUF) + } + } + + Device (SER3) { + Name (_HID, "LNRO000A") + Name (_ADR, 0x1c0c0000) + Name (_UID, 3) + + Method (_CRS, 0x0, Serialized) { + Name (RBUF, ResourceTemplate() { + Memory32Fixed (ReadWrite, 0x1c0c0000, 0x1000) + Interrupt (ResourceConsumer, Edge, ActiveBoth, Exclusive, , , ) {0x28} + }) + Return (RBUF) + } + } + + Device (WDT0) { + Name (_HID, "LNRO0011") + Name (_UID, 0) + Name (_ADR, 0x1c0f0000) /* WDT */ + Method (_CRS, 0x0, Serialized) { + Name (RBUF, ResourceTemplate () { + Memory32Fixed (ReadWrite, 0x1c0f0000, 0x00001000) + Interrupt (ResourceConsumer, Edge, ActiveBoth, + Exclusive, , , ) {32} }) Return (RBUF) } } + + Device (TIM0) { + Name (_HID, "LNRO0012") + Name (_UID, 0) + Name (_ADR, 0x1c110000) /* TIMER01 */ + Method (_CRS, 0x0, Serialized) { + Name (RBUF, ResourceTemplate () { + Memory32Fixed (ReadWrite, 0x1c110000, 0x00001000) + Interrupt (ResourceConsumer, Edge, ActiveBoth, + Exclusive, , , ) {34} + }) + Return (RBUF) + } + } + + Device (TIM2) { + Name (_HID, "LNRO0012") + Name (_UID, 1) + Name (_ADR, 0x1c120000) /* TIMER23 */ + Method (_CRS, 0x0, Serialized) { + Name (RBUF, ResourceTemplate () { + Memory32Fixed (ReadWrite, 0x1c120000, 0x00001000) + Interrupt (ResourceConsumer, Edge, ActiveBoth, + Exclusive, , , ) {35} + }) + Return (RBUF) + } + } + + Device (RTC0) { + Name (_HID, "LNRO0013") + Name (_UID, 0) + Name (_ADR, 0x1c170000) /* RTC */ + Method (_CRS, 0x0, Serialized) { + Name (RBUF, ResourceTemplate () { + Memory32Fixed (ReadWrite, 0x1c170000, 0x00001000) + Interrupt (ResourceConsumer, Edge, ActiveBoth, + Exclusive, , , ) {36} + }) + Return (RBUF) + } + } + + Device (CLCD) { + Name (_HID, "LNRO0014") + Name (_UID, 0) + Name (_ADR, 0x1c1f0000) /* CLCD */ + Method (_CRS, 0x0, Serialized) { + Name (RBUF, ResourceTemplate () { + Memory32Fixed (ReadWrite, 0x1c1f0000, 0x00001000) + Interrupt (ResourceConsumer, Edge, ActiveBoth, + Exclusive, , , ) {46} + }) + Return (RBUF) + } + Method(_DSM, 4, Serialized) { + Store (Package (2) + { + "clock-name", "CCLDCLK \\_SB.SMB.CLK0", + }, Local0) + + DTGP (Arg0, Arg1, Arg2, Arg3, RefOf (Local0)) + + Return (Local0) + } + } + + } // End of AMBA } } -- 1.7.9.5

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