diff options
| author | Rick Chen <rick@andestech.com> | 2018-12-03 17:48:20 +0800 |
|---|---|---|
| committer | Andes <uboot@andestech.com> | 2018-12-05 14:14:16 +0800 |
| commit | 48cbf6246052de10d35b616b5efb2f783904a49d (patch) | |
| tree | 4d4ef34e15ddc4d5df775b46590a514fbc3d9103 /board/AndesTech/ax25-ae350 | |
| parent | 4c6011364735cc1e554a65fd259edc524dbdac9c (diff) | |
riscv: ax25-ae350: Pass dtb address to u-boot with a1 register
ax25-ae350 use CONFIG_OF_BOARD via a2 and CONFIG_SYS_SDRAM_BASE
to boot from ram which allow the board to override the fdt
address originally.
But after this patch
riscv: save hart ID and device tree passed by prior boot stage
It provide prior_stage_fdt_address which offer a temporary
memory address to keep the dtb address passing from loader(gdb)
to u-boot with a1.
So passing via a2 and CONFIG_SYS_SDRAM_BASE is redundant and
can be removed. And it also somehow may corrupted BBL if it
was be arranged in CONFIG_SYS_SDRAM_BASE.
In board_fdt_blob_setup()
When boting from ram:
prior_stage_fdt_address will be use to reserved dtb temporarily.
When booting from ROM:
dtb will be pre-burned in CONFIG_SYS_FDT_BASE, if it is flash base.
Or CONFIG_SYS_FDT_BASE maybe a memory map space (NOT RAM or ROM)
which is provided by HW.
Signed-off-by: Rick Chen <rick@andestech.com>
Cc: Greentime Hu <greentime@andestech.com>
Diffstat (limited to 'board/AndesTech/ax25-ae350')
| -rw-r--r-- | board/AndesTech/ax25-ae350/ax25-ae350.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/board/AndesTech/ax25-ae350/ax25-ae350.c b/board/AndesTech/ax25-ae350/ax25-ae350.c index 5f4ca0f5a7..d343453f22 100644 --- a/board/AndesTech/ax25-ae350/ax25-ae350.c +++ b/board/AndesTech/ax25-ae350/ax25-ae350.c @@ -14,6 +14,7 @@ DECLARE_GLOBAL_DATA_PTR; +extern phys_addr_t prior_stage_fdt_address; /* * Miscellaneous platform dependent initializations */ @@ -66,7 +67,7 @@ ulong board_flash_get_legacy(ulong base, int banknum, flash_info_t *info) void *board_fdt_blob_setup(void) { - void **ptr = (void *)CONFIG_SYS_SDRAM_BASE; + void **ptr = (void *)&prior_stage_fdt_address; if (fdt_magic(*ptr) == FDT_MAGIC) return (void *)*ptr; |