From 47d73ba4f4a40f17622d93f96b48e285b73c3061 Mon Sep 17 00:00:00 2001 From: Zong Li Date: Tue, 27 Jul 2021 17:06:59 +0800 Subject: [PATCH] board: sifive: overwrite board_fdt_blob_setup in u-boot proper Add board_fdt_blob_setup to return the device tree location which is passed by prior stage in u-boot proper. The generic board_fdt_blob_setup always returns _end, it mignt be ok because u-boot SPL would currently put the dtb there, but it would be broken if we put the dtb to another place and assigned the location into a1 register for u-boot proper. Use the location passed by prior stage would make more sence, because we actually pass the location to u-boot proper and want to use that one, rather than the dtb which in _end. We can't use CONFIG_OF_PRIOR_STAGE because it doens't distinguish the implementation of u-boot SPL and u-boot proper, so u-boot SPL need to reply on the prior stage to pass device tree location as well, but we don't pass the DT from boot rom now. In addition, when CONFIG_OF_PRIOR_STAGE is enabled, the u-boot-spl.bin and u-boot.itb won't include the device tree. Signed-off-by: Zong Li Reviewed-by: Leo Yu-Chi Liang --- board/sifive/unleashed/unleashed.c | 11 +++++++++++ board/sifive/unmatched/unmatched.c | 11 +++++++++++ 2 files changed, 22 insertions(+) diff --git a/board/sifive/unleashed/unleashed.c b/board/sifive/unleashed/unleashed.c index a4e78220cb..fa65fcade0 100644 --- a/board/sifive/unleashed/unleashed.c +++ b/board/sifive/unleashed/unleashed.c @@ -16,6 +16,7 @@ #include #include #include +#include /* * This define is a value used for error/unknown serial. @@ -113,6 +114,16 @@ int misc_init_r(void) #endif +void *board_fdt_blob_setup(void) +{ + if (IS_ENABLED(CONFIG_OF_SEPARATE)) { + if (gd->arch.firmware_fdt_addr) + return (ulong *)gd->arch.firmware_fdt_addr; + else + return (ulong *)&_end; + } +} + int board_init(void) { int ret; diff --git a/board/sifive/unmatched/unmatched.c b/board/sifive/unmatched/unmatched.c index 6d60559588..da23a6ce24 100644 --- a/board/sifive/unmatched/unmatched.c +++ b/board/sifive/unmatched/unmatched.c @@ -9,6 +9,17 @@ #include #include #include +#include + +void *board_fdt_blob_setup(void) +{ + if (IS_ENABLED(CONFIG_OF_SEPARATE)) { + if (gd->arch.firmware_fdt_addr) + return (ulong *)gd->arch.firmware_fdt_addr; + else + return (ulong *)&_end; + } +} int board_init(void) { -- 2.39.5