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mach-k3: add reserved memory fixups for next boot stage

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The boot flow in K3 platforms requires the subsequent boot stages to be
aware of the memory reserved for previous boot binaries. In the regular
boot sequence of:

R5 SPL -> ATF -> OP-TEE -> A-core SPL -> U-Boot -> Kernel,

Both A-core SPL and U-Boot should be made aware of the memory reserved
for ATF and OP-TEE from their device-tree. Currently this information is
absent.

Therefore this patch adds the reserved-memory regions as part of
spl_perform_arch_fixups for the next stage's DT. This is called during
both R5 and A-core SPL which fixes up the DT for their respective next
stages: A-core SPL and U-Boot proper.

Reviewed-by: Dhruva Gole <d-gole@ti.com>
Signed-off-by: Anshul Dalal <anshuld@ti.com>
Tested-by: Wadim Egorov <w.egorov@phytec.de>
This commit is contained in:
Anshul Dalal
2025-10-17 18:45:31 +05:30
committed by Tom Rini
parent 16ffcff028
commit 859f68ed2e
1 changed files with 11 additions and 0 deletions
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11
arch/arm/mach-k3/common.c
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@@ -321,6 +321,17 @@ static __maybe_unused void k3_dma_remove(void)
pr_warn("DMA Device not found (err=%d)\n", rc);
}
void spl_perform_arch_fixups(struct spl_image_info *spl_image)
{
void *fdt = spl_image_fdt_addr(spl_image);
if (!fdt)
return;
fdt_fixup_reserved(fdt, "tfa", CONFIG_K3_ATF_LOAD_ADDR, 0x80000);
fdt_fixup_reserved(fdt, "optee", CONFIG_K3_OPTEE_LOAD_ADDR, 0x1800000);
}
void spl_board_prepare_for_boot(void)
{
#if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))