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mach-snapdragon: populate fallback FDT

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Set the fdt_addr_r environment variable to a region of LMB allocated
memory, and populate it by default with a copy of U-Boots FDT. This will
be used for Linux if no other DT is provided.

Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
This commit is contained in:
Caleb Connolly
2024-08-09 01:59:29 +02:00
parent 8bf5cadcb4
commit f05b69e1c4
1 changed files with 7 additions and 1 deletions
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8
arch/arm/mach-snapdragon/board.c
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@@ -423,6 +423,8 @@ void __weak qcom_late_init(void)
int board_late_init(void)
{
u32 status = 0;
phys_addr_t fdt_addr;
struct fdt_header *fdt_blob = (struct fdt_header *)gd->fdt_blob;
/* We need to be fairly conservative here as we support boards with just 1G of TOTAL RAM */
status |= env_set_hex("kernel_addr_r", addr_alloc(SZ_128M));
@@ -433,11 +435,15 @@ int board_late_init(void)
status |= env_set_hex("fastboot_addr_r", addr_alloc(FASTBOOT_BUF_SIZE));
status |= env_set_hex("scriptaddr", addr_alloc(SZ_4M));
status |= env_set_hex("pxefile_addr_r", addr_alloc(SZ_4M));
status |= env_set_hex("fdt_addr_r", addr_alloc(SZ_2M));
fdt_addr = addr_alloc(SZ_2M);
status |= env_set_hex("fdt_addr_r", fdt_addr);
if (status)
log_warning("%s: Failed to set run time variables\n", __func__);
/* By default copy U-Boots FDT, it will be used as a fallback */
memcpy((void *)fdt_addr, (void *)gd->fdt_blob, fdt32_to_cpu(fdt_blob->totalsize));
configure_env();
qcom_late_init();