Add support for re-relocation malloc() in arm's start-up code.
Signed-off-by: Simon Glass sjg@chromium.org ---
Changes in v3: - Rebase on earlier patch
Changes in v2: None
README | 3 +++ arch/arm/lib/crt0.S | 5 ++++- 2 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/README b/README index 11e9d31..73abbf0 100644 --- a/README +++ b/README @@ -3749,6 +3749,9 @@ Configuration Settings: The memory will be freed (or in fact just forgotton) when U-Boot relocates itself.
+ Pre-relocation malloc() is only supported on ARM at present + but is fairly easy to enable for other archs. + - CONFIG_SYS_BOOTM_LEN: Normally compressed uImages are limited to an uncompressed size of 8 MBytes. If this is not enough, diff --git a/arch/arm/lib/crt0.S b/arch/arm/lib/crt0.S index 43aa212..29cdad0 100644 --- a/arch/arm/lib/crt0.S +++ b/arch/arm/lib/crt0.S @@ -78,7 +78,10 @@ clr_gd: 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) && !defined(CONFIG_SPL_BUILD) + 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