* Build unconditionally as ARM for correct interoperation with OMAP firmware.
* Remove deprecated PC-relative stores
* Add the required ENDPROC() directive for each ENTRY().
* .align before data words
Signed-off-by: Dave Martin dave.martin@linaro.org --- arch/arm/mach-omap2/sram34xx.S | 36 ++++++++++++++++++++++++++++-------- 1 files changed, 28 insertions(+), 8 deletions(-)
diff --git a/arch/arm/mach-omap2/sram34xx.S b/arch/arm/mach-omap2/sram34xx.S index 7f893a2..fd1531c 100644 --- a/arch/arm/mach-omap2/sram34xx.S +++ b/arch/arm/mach-omap2/sram34xx.S @@ -34,6 +34,12 @@ #include "sdrc.h" #include "cm2xxx_3xxx.h"
+/* + * This file needs be built unconditionally as ARM to interoperate correctly + * with non-Thumb-2-capable firmware. + */ + .arm + .text
/* r1 parameters */ @@ -116,24 +122,36 @@ ENTRY(omap3_sram_configure_core_dpll)
@ pull the extra args off the stack @ and store them in SRAM + +/* + * PC-relative stores are deprecated in ARMv7 and lead to undefined behaviour + * in Thumb-2: use a r7 as a base instead. + * Be careful not to clobber r7 when maintaing this file. + */ + THUMB( adr r7, omap3_sram_configure_core_dpll ) + .macro strtext Rt:req, label:req + ARM( str \Rt, \label ) + THUMB( str \Rt, [r7, \label - omap3_sram_configure_core_dpll] ) + .endm + ldr r4, [sp, #52] - str r4, omap_sdrc_rfr_ctrl_0_val + strtext r4, omap_sdrc_rfr_ctrl_0_val ldr r4, [sp, #56] - str r4, omap_sdrc_actim_ctrl_a_0_val + strtext r4, omap_sdrc_actim_ctrl_a_0_val ldr r4, [sp, #60] - str r4, omap_sdrc_actim_ctrl_b_0_val + strtext r4, omap_sdrc_actim_ctrl_b_0_val ldr r4, [sp, #64] - str r4, omap_sdrc_mr_0_val + strtext r4, omap_sdrc_mr_0_val ldr r4, [sp, #68] - str r4, omap_sdrc_rfr_ctrl_1_val + strtext r4, omap_sdrc_rfr_ctrl_1_val cmp r4, #0 @ if SDRC_RFR_CTRL_1 is 0, beq skip_cs1_params @ do not use cs1 params ldr r4, [sp, #72] - str r4, omap_sdrc_actim_ctrl_a_1_val + strtext r4, omap_sdrc_actim_ctrl_a_1_val ldr r4, [sp, #76] - str r4, omap_sdrc_actim_ctrl_b_1_val + strtext r4, omap_sdrc_actim_ctrl_b_1_val ldr r4, [sp, #80] - str r4, omap_sdrc_mr_1_val + strtext r4, omap_sdrc_mr_1_val skip_cs1_params: mrc p15, 0, r8, c1, c0, 0 @ read ctrl register bic r10, r8, #0x800 @ clear Z-bit, disable branch prediction @@ -271,6 +289,7 @@ skip_cs1_prog: ldr r12, [r11] @ posted-write barrier for SDRC bx lr
+ .align omap3_sdrc_power: .word OMAP34XX_SDRC_REGADDR(SDRC_POWER) omap3_cm_clksel1_pll: @@ -319,6 +338,7 @@ omap3_sdrc_dlla_ctrl: .word OMAP34XX_SDRC_REGADDR(SDRC_DLLA_CTRL) core_m2_mask_val: .word 0x07FFFFFF +ENDPROC(omap3_sram_configure_core_dpll)
ENTRY(omap3_sram_configure_core_dpll_sz) .word . - omap3_sram_configure_core_dpll