diff options
Diffstat (limited to 'src/soc/amd/common/block')
| -rw-r--r-- | src/soc/amd/common/block/psp/psp_smi_flash.c | 46 |
1 files changed, 43 insertions, 3 deletions
diff --git a/src/soc/amd/common/block/psp/psp_smi_flash.c b/src/soc/amd/common/block/psp/psp_smi_flash.c index 367baef256..420fb948a4 100644 --- a/src/soc/amd/common/block/psp/psp_smi_flash.c +++ b/src/soc/amd/common/block/psp/psp_smi_flash.c @@ -72,6 +72,19 @@ static bool is_valid_psp_spi_erase(struct mbox_pspv2_cmd_spi_erase *cmd_buf) return is_valid_psp_spi_id(read64(&cmd_buf->req.target_nv_id)); } +static u64 get_psp_spi_info_id(struct mbox_pspv2_cmd_spi_info *cmd_buf) +{ + return read64(&cmd_buf->req.target_nv_id); +} + +static void set_psp_spi_info(struct mbox_pspv2_cmd_spi_info *cmd_buf, + u64 lba, u64 block_size, u64 num_blocks) +{ + write64(&cmd_buf->req.lba, lba); + write64(&cmd_buf->req.block_size, block_size); + write64(&cmd_buf->req.num_blocks, num_blocks); +} + static const char *id_to_region_name(u64 target_nv_id) { switch (target_nv_id) { @@ -117,7 +130,7 @@ static int lookup_store(u64 target_nv_id, struct region_device *rstore) return rdev_chain(rstore, rdev, 0, region_device_sz(rdev)); } -static inline enum mbox_p2c_status find_psp_spi_flash_device_region(u64 target_nv_id, +static enum mbox_p2c_status find_psp_spi_flash_device_region(u64 target_nv_id, struct region_device *store, const struct spi_flash **flash) { @@ -135,7 +148,7 @@ static inline enum mbox_p2c_status find_psp_spi_flash_device_region(u64 target_n return MBOX_PSP_SUCCESS; } -static inline bool spi_controller_available(void) +static bool spi_controller_available(void) { return !(spi_read8(SPI_MISC_CNTRL) & SPI_SEMAPHORE_DRIVER_LOCKED); } @@ -144,13 +157,40 @@ enum mbox_p2c_status psp_smi_spi_get_info(struct mbox_default_buffer *buffer) { struct mbox_pspv2_cmd_spi_info *const cmd_buf = (struct mbox_pspv2_cmd_spi_info *)buffer; + const struct spi_flash *flash; + struct region_device store; + u64 target_nv_id; + u64 block_size; + u64 num_blocks; + enum mbox_p2c_status ret; printk(BIOS_SPEW, "PSP: SPI info request\n"); if (!is_valid_psp_spi_info(cmd_buf)) return MBOX_PSP_COMMAND_PROCESS_ERROR; - return MBOX_PSP_UNSUPPORTED; + if (!spi_controller_available()) { + printk(BIOS_NOTICE, "PSP: SPI controller busy\n"); + return MBOX_PSP_SPI_BUSY; + } + + target_nv_id = get_psp_spi_info_id(cmd_buf); + + ret = find_psp_spi_flash_device_region(target_nv_id, &store, &flash); + + if (ret != MBOX_PSP_SUCCESS) + return ret; + + block_size = flash->sector_size; + + if (!block_size) + return MBOX_PSP_COMMAND_PROCESS_ERROR; + + num_blocks = region_device_sz(&store) / block_size; + + set_psp_spi_info(cmd_buf, 0, block_size, num_blocks); + + return MBOX_PSP_SUCCESS; } enum mbox_p2c_status psp_smi_spi_read(struct mbox_default_buffer *buffer) |