Re: [PATCH 2/2] Samsung/Arndale: Auto boot feature

On 22 March 2013 13:53, Cohen, Eugene eugene@hp.com wrote:

From the beginning I've been uncomfortable that ARM BDS has inherent knowledge of how to boot Linux since this is not compatible with the UEFI philosophy where BDS is OS agnostic and uses standardized NVRAM values (or standardized boot application paths) to determine what to boot. This type of stuff typically would go in an OS loader application, separate from BDS. If a specialized Linux OS loader app wanted to add autoboot capability so configuring boot arguments was not required that would be great, but the more Linux specific stuff I see going into BDS the more I cringe as this is work that would have to be un-done (or at least avoided) by someone wanted to implement only standard UEFI boot mechanisms.

Sure, Linaro is in full agreement with you here. That's why we have roadmap cards and engineers in place to work on a more generic and compliant solution.

In the meantime, all we have is the ARM BDS that we are patching (in more ways that one ;-)) and this is a patch to try to at least get it useful in the short term. With this context in mind, if you have any comments on it, they'd be appreciated.

-----Original Message----- From: boot-architecture-bounces@lists.linaro.org [mailto:boot-architecture-bounces@lists.linaro.org] On Behalf Of Rony Nandy Sent: Thursday, March 21, 2013 11:39 PM To: Ryan Harkin Cc: boot-architecture@lists.linaro.org; Shivamurthy Shastri Subject: Re: [PATCH 2/2] Samsung/Arndale: Auto boot feature

Hi Ryan, I think you have a fair point but this patch is useful for new users as they need not bother about configuring the device paths etc.Anyway,the user can always interrupt the boot and set his own boot configuration in case he doesen't want autoboot.This is just an add on feature.I concede this is a problem for LAVA.

On 03/22/2013 01:45 AM, Ryan Harkin wrote:

...

I'll Nack this one until I get some more opinions from the other UEFI people (LEG, Olivier Martin, etc...?) to see what they think.

...

If we are to implement this type of feature, I'd like it to be done in a different kind of way. Perhaps adding a new boot type, eg, add BDS_LOADER_KERNEL_LINUX_AUTOBOOT to the ARM_BDS_LOADER_TYPE enum in ArmPlatformPkg/Bds/BdsInternal.h.

This method is worth considering.But,I am not sure if this solves the LAVA issue.

...

Then, if the user selects that option, they get a magic boot.

I don't like the idea that I configure, say, to boot uImage from the SD card, partition 3, but this feature finds a zImage in partition 1 and boots it.

On 19 March 2013 11:27, Shivamurthy Shastri shiva.murthy@samsung.com wrote:

...

The patch been modified as per the new changes in ArmPlatformPkg/Bds/BootOption.c

Signed-off-by: Shivamurthy Shastri shiva.murthy@samsung.com Signed-off-by: Rony Nandy rony.nandy@linaro.org

---

...-created-to-incorporate-auto-boot-feature.patch | 101 ++++++++++++--------- 1 file changed, 57 insertions(+), 44 deletions(-)

diff --git a/SamsungPlatformPkg/patches/0001-The-patch-created-to-incorporate-auto-boot-feature.patch b/SamsungPlatformPkg/patches/0001-The-patch-created-to-incorporate-auto-boot-feature.patch index 91aea96..550f15c 100644 --- a/SamsungPlatformPkg/patches/0001-The-patch-created-to-incorporate-auto-boot-feature.patch +++ b/SamsungPlatformPkg/patches/0001-The-patch-created-to-incorporate-auto-boot-feature.patch @@ -1,31 +1,30 @@ -From 011bc2be4b3f2a5a5413511d7380b6fe3632d0f5 Mon Sep 17 00:00:00 2001 +From 3c9dabb0f20f41c37e1e18c7fcc9a39ce8bfc51d Mon Sep 17 00:00:00 2001 From: Shivamurthy Shastri shiva.murthy@samsung.com -Date: Wed, 5 Dec 2012 14:44:57 +0530 +Date: Fri, 22 Feb 2013 14:33:57 +0530 Subject: [PATCH] The patch created to incorporate auto boot feature for arndale board.

Signed-off-by: Shivamurthy Shastri shiva.murthy@samsung.com

• ArmPlatformPkg/Bds/BootOption.c | 71 ++++++++++++++++++++++++++++++++++++++---
• 1 file changed, 67 insertions(+), 4 deletions(-)

• ArmPlatformPkg/Bds/BootOption.c | 85 ++++++++++++++++++++++++++++++++++++-----

• 1 file changed, 75 insertions(+), 10 deletions(-)

  diff --git a/ArmPlatformPkg/Bds/BootOption.c b/ArmPlatformPkg/Bds/BootOption.c

-index 289d36a..468050d 100644 +index 78a4230..f35d039 100644 --- a/ArmPlatformPkg/Bds/BootOption.c +++ b/ArmPlatformPkg/Bds/BootOption.c -@@ -14,6 +14,11 @@ +@@ -13,6 +13,10 @@

• **/

  #include "BdsInternal.h"

• +#include <Library/DxeServicesTableLib.h> +#include <Protocol/BlockIo.h> +#include <Guid/DebugImageInfoTable.h> +#include <Protocol/DevicePathToText.h>

-+

• extern EFI_HANDLE mImageHandle;

• EFI_STATUS

-@@ -22,26 +27,61 @@ BootOptionStart ( +@@ -22,48 +26,91 @@ BootOptionStart ( ) { EFI_STATUS Status; @@ -37,22 +36,22 @@ index 289d36a..468050d 100644 EFI_DEVICE_PATH_PROTOCOL* FdtDevicePath;

• EFI_DEVICE_PATH_PROTOCOL* DefaultFdtDevicePath;
• UINTN FdtDevicePathSize;

+- UINTN CmdLineSize;

• //EFI_DEVICE_PATH_PROTOCOL* DefaultFdtDevicePath;
• //UINTN FdtDevicePathSize;

• UINTN CmdLineSize;

++ //UINTN CmdLineSize; UINTN InitrdSize; EFI_DEVICE_PATH* Initrd; +- UINTN FdtLocalSize; ++ //UINTN FdtLocalSize; UINT16 LoadOptionIndexSize; ++ UINTN HandleCount; ++ EFI_HANDLE* HandleBuffer; ++ UINTN Index; ++ EFI_DEVICE_PATH_TO_TEXT_PROTOCOL* DevicePathToTextProtocol; ++ EFI_DEVICE_PATH_PROTOCOL* LoadImageDevicePath; ++ EFI_DEVICE_PATH_PROTOCOL* FileSystemDevicePath;

-+ UINTN HandleCount; -+ EFI_HANDLE *HandleBuffer; -+ UINTN Index; -+ //CHAR16* String; -+ //EFI_DEVICE_PATH_PROTOCOL* DevicePathProtocol; -+ EFI_DEVICE_PATH_TO_TEXT_PROTOCOL* DevicePathToTextProtocol; -+ EFI_DEVICE_PATH_PROTOCOL *LoadImageDevicePath; -+ EFI_DEVICE_PATH_PROTOCOL *FileSystemDevicePath; -+ if (IS_ARM_BDS_BOOTENTRY (BootOption)) { Status = EFI_UNSUPPORTED; OptionalData = BootOption->OptionalData; @@ -72,12 +71,6 @@ index 289d36a..468050d 100644

•    return Status;
  

•  }
  

-+ /*for (Index = 0; Index < HandleCount; Index++) { -+ Status = gBS->HandleProtocol (HandleBuffer[Index], &gEfiDevicePathProtocolGuid, (VOID **)&DevicePathProtocol); -+ String = DevicePathToTextProtocol->ConvertDevicePathToText(DevicePathProtocol,TRUE,TRUE); -+ Print (L"[0x%X] %s\n",(UINT32)HandleBuffer[Index], String); -+ }*/ -+

• for (Index = 0; Index < HandleCount; Index++) {
  

•     //Get the device path
  

•     FileSystemDevicePath = DevicePathFromHandle(HandleBuffer[Index]);
  

@@ -91,15 +84,30 @@ index 289d36a..468050d 100644

     Status = BdsStartEfiApplication (mImageHandle, BootOption->FilePathList, 0, NULL);
   } else if (LoaderType == BDS_LOADER_KERNEL_LINUX_ATAG) {

-@@ -55,9 +95,18 @@ BootOptionStart (

•   LinuxArguments = &(OptionalData->Arguments.LinuxArguments);
  

+- CmdLineSize = ReadUnaligned16 ((CONST UINT16*)&LinuxArguments->CmdLineSize); ++ //CmdLineSize = ReadUnaligned16 ((CONST UINT16*)&LinuxArguments->CmdLineSize);

•   InitrdSize = ReadUnaligned16 ((CONST UINT16*)&LinuxArguments->InitrdSize);
  

++#if 0

•   if (InitrdSize > 0) {
  

•     Initrd = GetAlignedDevicePath ((EFI_DEVICE_PATH*)((UINTN)(LinuxArguments + 1) + CmdLineSize));
  

•   } else {
       Initrd = NULL;
     }
  

+- ++#endif ++

•  //Check if zImage file on SD-MMC.
  

•  LoadImageDevicePath = FileDevicePath(HandleBuffer[Index], L"uImage");
  

++ if (InitrdSize > 0) { ++ Initrd = FileDevicePath(HandleBuffer[Index], L"uInitrd"); ++ } else { ++ Initrd = NULL; ++ }

•  Status = BdsBootLinuxAtag (LoadImageDevicePath, Initrd, (CHAR8*)(LinuxArguments + 1));
  

•  if (EFI_ERROR(Status)) {
  

-+ continue; ++ continue;

•  }
  

+#if 0 @@ -107,33 +115,38 @@ index 289d36a..468050d 100644 Initrd, // Initrd (CHAR8*)(LinuxArguments + 1)); // CmdLine +#endif

• } else if (LoaderType == BDS_LOADER_KERNEL_LINUX_FDT) {
  

• } else if ((LoaderType == BDS_LOADER_KERNEL_LINUX_GLOBAL_FDT) || (LoaderType == BDS_LOADER_KERNEL_LINUX_LOCAL_FDT)) {
     LinuxArguments = &(OptionalData->Arguments.LinuxArguments);
  

•   CmdLineSize = ReadUnaligned16 ((CONST UINT16*)&LinuxArguments->CmdLineSize);
  

-@@ -69,6 +118,7 @@ BootOptionStart (

•     Initrd = NULL;
  

•   }
  

+- CmdLineSize = ReadUnaligned16 ((CONST UINT16*)&LinuxArguments->CmdLineSize); ++ //CmdLineSize = ReadUnaligned16 ((CONST UINT16*)&LinuxArguments->CmdLineSize);

•   InitrdSize = ReadUnaligned16 ((CONST UINT16*)&LinuxArguments->InitrdSize);
  
  

  +#if 0

•   // Get the default FDT device path
  

•   Status = gBS->LocateProtocol (&gEfiDevicePathFromTextProtocolGuid, NULL, (VOID **)&EfiDevicePathFromTextProtocol);
  

•   ASSERT_EFI_ERROR(Status);
  

-@@ -78,13 +128,26 @@ BootOptionStart (

•   FdtDevicePathSize = GetDevicePathSize (DefaultFdtDevicePath);
  

•   Status = GetEnvironmentVariable ((CHAR16 *)L"Fdt", DefaultFdtDevicePath, &FdtDevicePathSize, (VOID **)&FdtDevicePath);
  

•   ASSERT_EFI_ERROR(Status);
  

•   if (InitrdSize > 0) {
  

•     Initrd = GetAlignedDevicePath ((EFI_DEVICE_PATH*)((UINTN)(LinuxArguments + 1) + CmdLineSize));
  

•   } else {
  

+@@ -89,13 +136,31 @@ BootOptionStart (

•     Status = GetEnvironmentVariable ((CHAR16 *)L"Fdt", DefaultFdtDevicePath, &FdtDevicePathSize, (VOID **)&FdtDevicePath);
  

•     ASSERT_EFI_ERROR(Status);
  

•   }
  

+- +#endif

•  //Check if zImage file on SD-MMC.
  

•  LoadImageDevicePath = FileDevicePath(HandleBuffer[Index], L"uImage");
  

-+ FdtDevicePath = FileDevicePath(HandleBuffer[Index], L"exynos5250-arndale.dtb"); ++ FdtDevicePath = FileDevicePath(HandleBuffer[Index], L"board.dtb"); ++ if (InitrdSize > 0) { ++ Initrd = FileDevicePath(HandleBuffer[Index], L"uInitrd"); ++ } else { ++ Initrd = NULL; ++ }

•  Status = BdsBootLinuxFdt (LoadImageDevicePath, Initrd, (CHAR8*)(LinuxArguments + 1), FdtDevicePath);
  

•  FreePool (FdtDevicePath);
  

•  if (EFI_ERROR(Status)) {
  

•    continue;
  

•  }
  

• }
  

++ +#if 0 Status = BdsBootLinuxFdt (BootOption->FilePathList, Initrd, // Initrd @@ -146,5 +159,5 @@ index 289d36a..468050d 100644 } else { // Set BootCurrent variable -- -1.8.0 +1.8.1.1

-- 1.8.2

.

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