[PATCH] ARM: stm32: Auto-detect ROM API table on STM32MP15xx

[Marek Vasut]

The ROM API table location is passed to the SPL by BootROM in register r0,
make use of this, store the content of r0 and later use it to access the
ROM API table to determine current boot device.

Signed-off-by: Marek Vasut <marek.va...@mailbox.org>
---
Cc: Patrice Chotard <patrice.chot...@foss.st.com>
Cc: Patrick Delaunay <patrick.delau...@foss.st.com>
Cc: Simon Glass <s...@chromium.org>
Cc: Sughosh Ganu <sughosh.g...@linaro.org>
Cc: Tom Rini <tr...@konsulko.com>
Cc: u-boot@lists.denx.de
Cc: uboot-st...@st-md-mailman.stormreply.com
---
 arch/arm/mach-stm32mp/stm32mp1/cpu.c        | 3 +--
 arch/arm/mach-stm32mp/stm32mp1/stm32mp15x.c | 3 +--
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/arch/arm/mach-stm32mp/stm32mp1/cpu.c 
b/arch/arm/mach-stm32mp/stm32mp1/cpu.c
index 18175fd12cc..9ab5a3ede52 100644
--- a/arch/arm/mach-stm32mp/stm32mp1/cpu.c
+++ b/arch/arm/mach-stm32mp/stm32mp1/cpu.c
@@ -330,8 +330,7 @@ static uintptr_t nt_fw_dtb __section(".data");
 void save_boot_params(unsigned long r0, unsigned long r1, unsigned long r2,
                      unsigned long r3)
 {
-       if (IS_ENABLED(CONFIG_STM32_ECDSA_VERIFY))
-               rom_api_table = r0;
+       rom_api_table = r0;
 
        if (IS_ENABLED(CONFIG_TFABOOT))
                nt_fw_dtb = r2;
diff --git a/arch/arm/mach-stm32mp/stm32mp1/stm32mp15x.c 
b/arch/arm/mach-stm32mp/stm32mp1/stm32mp15x.c
index caeeeca863c..07d99034861 100644
--- a/arch/arm/mach-stm32mp/stm32mp1/stm32mp15x.c
+++ b/arch/arm/mach-stm32mp/stm32mp1/stm32mp15x.c
@@ -64,7 +64,6 @@
  * - boot instance = bit 31:16
  * - boot device = bit 15:0
  */
-#define BOOTROM_PARAM_ADDR     0x2FFC0078
 #define BOOTROM_MODE_MASK      GENMASK(15, 0)
 #define BOOTROM_MODE_SHIFT     0
 #define BOOTROM_INSTANCE_MASK  GENMASK(31, 16)
@@ -189,7 +188,7 @@ void spl_board_init(void)
 static void update_bootmode(void)
 {
        u32 boot_mode;
-       u32 bootrom_itf = readl(BOOTROM_PARAM_ADDR);
+       u32 bootrom_itf = readl(get_stm32mp_rom_api_table());
        u32 bootrom_device, bootrom_instance;
 
        /* enable TAMP clock = RTCAPBEN */
-- 
2.47.2