[PATCH -next v6 09/10] mach-k3: add reserved memory fixups for next boot stage

[Anshul Dalal]

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.

Signed-off-by: Anshul Dalal <anshuld at ti.com>
---
 arch/arm/mach-k3/common.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/arm/mach-k3/common.c b/arch/arm/mach-k3/common.c
index abf4169d6b7..9c2fe92cf25 100644
--- a/arch/arm/mach-k3/common.c
+++ b/arch/arm/mach-k3/common.c
@@ -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))
-- 
2.50.1