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| author | Simon Glass <sjg@chromium.org> | 2015-10-19 06:50:00 -0600 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2015-10-24 13:50:36 -0400 |
| commit | 5ba534d247d418e09c5b4fe5fb7fa780aac08e49 (patch) | |
| tree | 277dea023629e8aa5c2d53932a8ee8347b70ad59 /arch/arm | |
| parent | 931bec31b44fbcb01448651424aaf9b6212c141f (diff) | |
| download | u-boot-imx-5ba534d247d418e09c5b4fe5fb7fa780aac08e49.zip u-boot-imx-5ba534d247d418e09c5b4fe5fb7fa780aac08e49.tar.gz u-boot-imx-5ba534d247d418e09c5b4fe5fb7fa780aac08e49.tar.bz2 | |
arm: Switch 32-bit ARM to using generic global_data setup
There is quite a bit of assembler code that can be removed if we use the
generic global_data setup. Less arch-specific code makes it easier to add
new features and maintain the start-up code.
Drop the unneeded code and adjust the hooks in board_f.c to cope.
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/lib/crt0.S | 28 |
1 files changed, 4 insertions, 24 deletions
diff --git a/arch/arm/lib/crt0.S b/arch/arm/lib/crt0.S index 4c3a94a..80548eb 100644 --- a/arch/arm/lib/crt0.S +++ b/arch/arm/lib/crt0.S @@ -82,31 +82,11 @@ ENTRY(_main) #else bic sp, sp, #7 /* 8-byte alignment for ABI compliance */ #endif - mov r2, sp - sub sp, sp, #GD_SIZE /* allocate one GD above SP */ -#if defined(CONFIG_CPU_V7M) /* v7M forbids using SP as BIC destination */ - mov r3, sp - bic r3, r3, #7 - mov sp, r3 -#else - bic sp, sp, #7 /* 8-byte alignment for ABI compliance */ -#endif - mov r9, sp /* GD is above SP */ - mov r1, sp + mov r0, sp + bl board_init_f_mem + mov sp, r0 + mov r0, #0 -clr_gd: - cmp r1, r2 /* while not at end of GD */ -#if defined(CONFIG_CPU_V7M) - itt lo -#endif - strlo r0, [r1] /* clear 32-bit GD word */ - addlo r1, r1, #4 /* move to next */ - blo clr_gd -#if defined(CONFIG_SYS_MALLOC_F_LEN) - sub sp, sp, #CONFIG_SYS_MALLOC_F_LEN - str sp, [r9, #GD_MALLOC_BASE] -#endif - /* mov r0, #0 not needed due to above code */ bl board_init_f #if ! defined(CONFIG_SPL_BUILD) |