On 1/12/23 18:58, Marek Vasut wrote:
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
Cc: Alexandru Gagniuc mr.nuke.me@gmail.com Cc: Patrice Chotard patrice.chotard@foss.st.com Cc: Patrick Delaunay patrick.delaunay@foss.st.com
V2: Avoid #if CONFIG... , use if (CONFIG... instead V3: No change V4: - Add RB from Patrick - Include sys_proto.h to avoid undefined symbol warning
arch/arm/mach-stm32mp/boot_params.c | 21 ++--------- 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, 43 insertions(+), 36 deletions(-)
diff --git a/arch/arm/mach-stm32mp/boot_params.c b/arch/arm/mach-stm32mp/boot_params.c index e91ef1b2fc7..24d04dcf0f9 100644 --- a/arch/arm/mach-stm32mp/boot_params.c +++ b/arch/arm/mach-stm32mp/boot_params.c @@ -8,33 +8,18 @@ #include <common.h> #include <log.h> #include <linux/libfdt.h> +#include <asm/arch/sys_proto.h> #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..ee59866bb73 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;- if (IS_ENABLED(CONFIG_TFABOOT))
nt_fw_dtb = r2;- 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 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;
} 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);
Applied to u-boot-stm/master
Thanks Patrice