ARM: stm32: Factor out save_boot_params

The STM32MP15xx platform currently comes with two incompatible
implementations of save_boot_params() weak function override.
Factor the save_boot_params() implementation into common cpu.c
code and provide accessors to read out both ROM API table address
and DT address from any place in the code instead.

Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Signed-off-by: Marek Vasut <marex@denx.de>

1 files changed, 2 insertions, 18 deletions

diff --git a/arch/arm/mach-stm32mp/ecdsa_romapi.c b/arch/arm/mach-stm32mp/ecdsa_romapi.c
index 6156526253c..12b42b9d59c 100644
--- a/arch/arm/mach-stm32mp/ecdsa_romapi.c
+++ b/arch/arm/mach-stm32mp/ecdsa_romapi.c
@@ -24,26 +24,10 @@ struct ecdsa_rom_api {
 					   uint32_t ecc_algo);
 };
 
-/*
- * Without forcing the ".data" section, this would get saved in ".bss". BSS
- * will be cleared soon after, so it's not suitable.
- */
-static uintptr_t rom_api_loc __section(".data");
-
-/*
- * The ROM gives us the API location in r0 when starting. This is only available
- * during SPL, as there isn't (yet) a mechanism to pass this on to u-boot.
- */
-void save_boot_params(unsigned long r0, unsigned long r1, unsigned long r2,
-		      unsigned long r3)
-{
-	rom_api_loc = r0;
-	save_boot_params_ret();
-}
-
 static void stm32mp_rom_get_ecdsa_functions(struct ecdsa_rom_api *rom)
 {
-	uintptr_t verify_ptr = rom_api_loc + ROM_API_OFFSET_ECDSA_VERIFY;
+	uintptr_t verify_ptr = get_stm32mp_rom_api_table() +
+			       ROM_API_OFFSET_ECDSA_VERIFY;
 
 	rom->ecdsa_verify_signature = *(void **)verify_ptr;
 }