| Message ID | 20220704051658.1085442-8-sughosh.ganu@linaro.org |
|---|---|
| State | Superseded |
| Headers | show |
| Series | FWU: Add FWU Multi Bank Update feature support | expand |
Hi, On 7/4/22 07:16, Sughosh Ganu wrote: > The FWU Multi Bank Update feature allows the platform to boot the > firmware images from one of the partitions(banks). The first stage > bootloader(fsbl) passes the value of the boot index, i.e. the bank > from which the firmware images were booted from to U-Boot. On the > STM32MP157C-DK2 board, this value is passed through one of the SoC's > backup register. Add a function to read the boot index value from the > backup register. > > Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org> > Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com> > --- > Changes since V5: > * Shuffled the location of the TAMP_FWU_* macros as suggested by > Patrick > > arch/arm/mach-stm32mp/include/mach/stm32.h | 5 +++++ > board/st/stm32mp1/stm32mp1.c | 8 ++++++++ > include/fwu.h | 1 + > 3 files changed, 14 insertions(+) > Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Thanks Patrick
diff --git a/arch/arm/mach-stm32mp/include/mach/stm32.h b/arch/arm/mach-stm32mp/include/mach/stm32.h index 47e88fc3dc..0344de796e 100644 --- a/arch/arm/mach-stm32mp/include/mach/stm32.h +++ b/arch/arm/mach-stm32mp/include/mach/stm32.h @@ -100,11 +100,16 @@ enum boot_device { #define TAMP_BACKUP_REGISTER(x) (STM32_TAMP_BASE + 0x100 + 4 * x) #define TAMP_BACKUP_MAGIC_NUMBER TAMP_BACKUP_REGISTER(4) #define TAMP_BACKUP_BRANCH_ADDRESS TAMP_BACKUP_REGISTER(5) +#define TAMP_FWU_BOOT_INFO_REG TAMP_BACKUP_REGISTER(10) #define TAMP_COPRO_RSC_TBL_ADDRESS TAMP_BACKUP_REGISTER(17) #define TAMP_COPRO_STATE TAMP_BACKUP_REGISTER(18) #define TAMP_BOOT_CONTEXT TAMP_BACKUP_REGISTER(20) #define TAMP_BOOTCOUNT TAMP_BACKUP_REGISTER(21) +#define TAMP_FWU_BOOT_IDX_MASK GENMASK(3, 0) + +#define TAMP_FWU_BOOT_IDX_OFFSET 0 + #define TAMP_COPRO_STATE_OFF 0 #define TAMP_COPRO_STATE_INIT 1 #define TAMP_COPRO_STATE_CRUN 2 diff --git a/board/st/stm32mp1/stm32mp1.c b/board/st/stm32mp1/stm32mp1.c index 3aa223d795..6b249fafbb 100644 --- a/board/st/stm32mp1/stm32mp1.c +++ b/board/st/stm32mp1/stm32mp1.c @@ -1006,4 +1006,12 @@ int fwu_plat_get_update_index(u32 *update_idx) return ret; } + +void fwu_plat_get_bootidx(void *boot_idx) +{ + u32 *bootidx = boot_idx; + + *bootidx = (readl(TAMP_FWU_BOOT_INFO_REG) >> + TAMP_FWU_BOOT_IDX_OFFSET) & TAMP_FWU_BOOT_IDX_MASK; +} #endif /* CONFIG_FWU_MULTI_BANK_UPDATE */ diff --git a/include/fwu.h b/include/fwu.h index 38dceca9c5..edb28c9659 100644 --- a/include/fwu.h +++ b/include/fwu.h @@ -49,6 +49,7 @@ int fwu_revert_boot_index(void); int fwu_accept_image(efi_guid_t *img_type_id, u32 bank); int fwu_clear_accept_image(efi_guid_t *img_type_id, u32 bank); +void fwu_plat_get_bootidx(void *boot_idx); int fwu_plat_get_alt_num(struct udevice *dev, efi_guid_t *image_guid, int *alt_num); int fwu_gpt_get_alt_num(struct blk_desc *desc, efi_guid_t *image_guid,