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.
Signed-off-by: Marek Vasut <ma...@denx.de>
---
Cc: Alexandru Gagniuc <mr.nuke...@gmail.com>
Cc: Patrice Chotard <patrice.chot...@foss.st.com>
Cc: Patrick Delaunay <patrick.delau...@foss.st.com>
---
arch/arm/mach-stm32mp/boot_params.c | 20 ++---------
arch/arm/mach-stm32mp/cpu.c | 35 +++++++++++++++++++
arch/arm/mach-stm32mp/ecdsa_romapi.c | 20 ++---------
.../arm/mach-stm32mp/include/mach/sys_proto.h | 3 ++
4 files changed, 42 insertions(+), 36 deletions(-)
diff --git a/arch/arm/mach-stm32mp/boot_params.c
b/arch/arm/mach-stm32mp/boot_params.c
index e91ef1b2fc7..e40cca938ef 100644
--- a/arch/arm/mach-stm32mp/boot_params.c
+++ b/arch/arm/mach-stm32mp/boot_params.c
@@ -11,30 +11,14 @@
#include <asm/sections.h>
#include <asm/system.h>
-/*
- * Force data-section, as .bss will not be valid
- * when save_boot_params is invoked.
- */
-static unsigned long nt_fw_dtb __section(".data");
-
-/*
- * Save the FDT address provided by TF-A in r2 at boot time
- * This function is called from start.S
- */
-void save_boot_params(unsigned long r0, unsigned long r1, unsigned long r2,
- unsigned long r3)
-{
- nt_fw_dtb = r2;
-
- save_boot_params_ret();
-}
-
/*
* Use the saved FDT address provided by TF-A at boot time (NT_FW_CONFIG =
* Non Trusted Firmware configuration file) when the pointer is valid
*/
void *board_fdt_blob_setup(int *err)
{
+ unsigned long nt_fw_dtb = get_stm32mp_bl2_dtb();
+
log_debug("%s: nt_fw_dtb=%lx\n", __func__, nt_fw_dtb);
*err = 0;
diff --git a/arch/arm/mach-stm32mp/cpu.c b/arch/arm/mach-stm32mp/cpu.c
index 855fc755fe0..fa02a11d867 100644
--- a/arch/arm/mach-stm32mp/cpu.c
+++ b/arch/arm/mach-stm32mp/cpu.c
@@ -378,3 +378,38 @@ int arch_misc_init(void)
return 0;
}
+
+/*
+ * 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_table __section(".data");
+static uintptr_t nt_fw_dtb __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. Save
+ * the FDT address provided by TF-A in r2 at boot time. This function is called
+ * from start.S
+ */
+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;
+#endif
+#if IS_ENABLED(CONFIG_TFABOOT)
+ nt_fw_dtb = r2;
+#endif
+ save_boot_params_ret();
+}
+
+uintptr_t get_stm32mp_rom_api_table(void)
+{
+ return rom_api_table;
+}
+
+uintptr_t get_stm32mp_bl2_dtb(void)
+{
+ return nt_fw_dtb;
+}
diff --git a/arch/arm/mach-stm32mp/ecdsa_romapi.c
b/arch/arm/mach-stm32mp/ecdsa_romapi.c
index 72b87bf2c64..32a7357ad56 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;
}
diff --git a/arch/arm/mach-stm32mp/include/mach/sys_proto.h
b/arch/arm/mach-stm32mp/include/mach/sys_proto.h
index f19a70e53e0..0d39b67178e 100644
--- a/arch/arm/mach-stm32mp/include/mach/sys_proto.h
+++ b/arch/arm/mach-stm32mp/include/mach/sys_proto.h
@@ -77,3 +77,6 @@ void stm32mp_misc_init(void);
/* helper function: read data from OTP */
u32 get_otp(int index, int shift, int mask);
+
+uintptr_t get_stm32mp_rom_api_table(void);
+uintptr_t get_stm32mp_bl2_dtb(void);
--
2.35.1
