diff options
| -rw-r--r-- | arch/arm/lib/crt0_64.S | 3 | ||||
| -rw-r--r-- | arch/arm/lib/spl.c | 24 |
2 files changed, 12 insertions, 15 deletions
diff --git a/arch/arm/lib/crt0_64.S b/arch/arm/lib/crt0_64.S index cad22c7b41f..91b19e00da2 100644 --- a/arch/arm/lib/crt0_64.S +++ b/arch/arm/lib/crt0_64.S @@ -108,6 +108,7 @@ relocation_return: * Set up final (full) environment */ bl c_runtime_cpu_setup /* still call old routine */ +#endif /* !CONFIG_SPL_BUILD */ /* TODO: For SPL, call spl_relocate_stack_gd() to alloc stack relocation */ @@ -130,6 +131,4 @@ clear_loop: /* NOTREACHED - board_init_r() does not return */ -#endif /* !CONFIG_SPL_BUILD */ - ENDPROC(_main) diff --git a/arch/arm/lib/spl.c b/arch/arm/lib/spl.c index c1b85340fad..3587ad68129 100644 --- a/arch/arm/lib/spl.c +++ b/arch/arm/lib/spl.c @@ -25,22 +25,20 @@ gd_t gdata __attribute__ ((section(".data"))); #endif /* - * In the context of SPL, board_init_f must ensure that any clocks/etc for - * DDR are enabled, ensure that the stack pointer is valid, clear the BSS - * and call board_init_r. We provide this version by default but mark it - * as __weak to allow for platforms to do this in their own way if needed. + * In the context of SPL, board_init_f() prepares the hardware for execution + * from system RAM (DRAM, DDR...). As system RAM may not be available yet, + * board_init_f() must use the current GD to store any data which must be + * passed on to later stages. These data include the relocation destination, + * the future stack, and the future GD location. BSS is cleared after this + * function (and therefore must be accessible). + * + * We provide this version by default but mark it as __weak to allow for + * platforms to do this in their own way if needed. Please see the top + * level U-Boot README "Board Initialization Flow" section for info on what + * to put in this function. */ void __weak board_init_f(ulong dummy) { - /* Clear the BSS. */ - memset(__bss_start, 0, __bss_end - __bss_start); - -#ifndef CONFIG_SPL_DM - /* TODO: Remove settings of the global data pointer here */ - gd = &gdata; -#endif - - board_init_r(NULL, 0); } /* |