| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| |
| #include <assert.h> |
| #include <boot/coreboot_tables.h> |
| #include <commonlib/region.h> |
| #include <console/console.h> |
| #include <string.h> |
| #include <spi-generic.h> |
| #include <spi_flash.h> |
| #include <timer.h> |
| #include <types.h> |
| |
| #include "spi_flash_internal.h" |
| |
| #if CONFIG(SPI_FLASH_FORCE_4_BYTE_ADDR_MODE) |
| #define ADDR_MOD 1 |
| #else |
| #define ADDR_MOD 0 |
| #endif |
| |
| #define SPI_FLASH_EXIT_4BYTE_STAGE \ |
| (ENV_INITIAL_STAGE || CONFIG(BOOT_DEVICE_MEMORY_MAPPED)) |
| |
| static void spi_flash_addr(u32 addr, u8 *cmd) |
| { |
| /* cmd[0] is actual command */ |
| if (CONFIG(SPI_FLASH_FORCE_4_BYTE_ADDR_MODE)) { |
| cmd[1] = addr >> 24; |
| cmd[2] = addr >> 16; |
| cmd[3] = addr >> 8; |
| cmd[4] = addr >> 0; |
| } else { |
| cmd[1] = addr >> 16; |
| cmd[2] = addr >> 8; |
| cmd[3] = addr >> 0; |
| } |
| } |
| |
| static int do_spi_flash_cmd(const struct spi_slave *spi, const u8 *dout, |
| size_t bytes_out, void *din, size_t bytes_in) |
| { |
| int ret; |
| /* |
| * SPI flash requires command-response kind of behavior. Thus, two |
| * separate SPI vectors are required -- first to transmit dout and other |
| * to receive in din. If some specialized SPI flash controllers |
| * (e.g. x86) can perform both command and response together, it should |
| * be handled at SPI flash controller driver level. |
| */ |
| struct spi_op vectors[] = { |
| [0] = { .dout = dout, .bytesout = bytes_out, |
| .din = NULL, .bytesin = 0, }, |
| [1] = { .dout = NULL, .bytesout = 0, |
| .din = din, .bytesin = bytes_in }, |
| }; |
| size_t count = ARRAY_SIZE(vectors); |
| if (!bytes_in) |
| count = 1; |
| |
| ret = spi_claim_bus(spi); |
| if (ret) |
| return ret; |
| |
| ret = spi_xfer_vector(spi, vectors, count); |
| |
| spi_release_bus(spi); |
| return ret; |
| } |
| |
| static int do_dual_output_cmd(const struct spi_slave *spi, const u8 *dout, |
| size_t bytes_out, void *din, size_t bytes_in) |
| { |
| int ret; |
| |
| /* |
| * spi_xfer_vector() will automatically fall back to .xfer() if |
| * .xfer_vector() is unimplemented. So using vector API here is more |
| * flexible, even though a controller that implements .xfer_vector() |
| * and (the non-vector based) .xfer_dual() but not .xfer() would be |
| * pretty odd. |
| */ |
| struct spi_op vector = { .dout = dout, .bytesout = bytes_out, |
| .din = NULL, .bytesin = 0 }; |
| |
| ret = spi_claim_bus(spi); |
| if (ret) |
| return ret; |
| |
| ret = spi_xfer_vector(spi, &vector, 1); |
| |
| if (!ret) |
| ret = spi->ctrlr->xfer_dual(spi, NULL, 0, din, bytes_in); |
| |
| spi_release_bus(spi); |
| return ret; |
| } |
| |
| static int do_dual_io_cmd(const struct spi_slave *spi, const u8 *dout, |
| size_t bytes_out, void *din, size_t bytes_in) |
| { |
| int ret; |
| |
| /* Only the very first byte (opcode) is transferred in "single" mode. */ |
| struct spi_op vector = { .dout = dout, .bytesout = 1, |
| .din = NULL, .bytesin = 0 }; |
| |
| ret = spi_claim_bus(spi); |
| if (ret) |
| return ret; |
| |
| ret = spi_xfer_vector(spi, &vector, 1); |
| |
| if (!ret) |
| ret = spi->ctrlr->xfer_dual(spi, &dout[1], bytes_out - 1, NULL, 0); |
| |
| if (!ret) |
| ret = spi->ctrlr->xfer_dual(spi, NULL, 0, din, bytes_in); |
| |
| spi_release_bus(spi); |
| return ret; |
| } |
| |
| int spi_flash_cmd(const struct spi_slave *spi, u8 cmd, void *response, size_t len) |
| { |
| int ret = do_spi_flash_cmd(spi, &cmd, sizeof(cmd), response, len); |
| if (ret) |
| printk(BIOS_WARNING, "SF: Failed to send command %02x: %d\n", cmd, ret); |
| |
| return ret; |
| } |
| |
| /* TODO: This code is quite possibly broken and overflowing stacks. Fix ASAP! */ |
| #pragma GCC diagnostic push |
| #if defined(__GNUC__) && !defined(__clang__) |
| #pragma GCC diagnostic ignored "-Wstack-usage=" |
| #endif |
| #pragma GCC diagnostic ignored "-Wvla" |
| int spi_flash_cmd_write(const struct spi_slave *spi, const u8 *cmd, |
| size_t cmd_len, const void *data, size_t data_len) |
| { |
| int ret; |
| u8 buff[cmd_len + data_len]; |
| memcpy(buff, cmd, cmd_len); |
| memcpy(buff + cmd_len, data, data_len); |
| |
| ret = do_spi_flash_cmd(spi, buff, cmd_len + data_len, NULL, 0); |
| if (ret) { |
| printk(BIOS_WARNING, "SF: Failed to send write command (%zu bytes): %d\n", |
| data_len, ret); |
| } |
| |
| return ret; |
| } |
| #pragma GCC diagnostic pop |
| |
| /* Perform the read operation honoring spi controller fifo size, reissuing |
| * the read command until the full request completed. */ |
| int spi_flash_cmd_read(const struct spi_flash *flash, u32 offset, |
| size_t len, void *buf) |
| { |
| u8 cmd[5 + ADDR_MOD]; |
| int ret, cmd_len; |
| int (*do_cmd)(const struct spi_slave *spi, const u8 *din, |
| size_t in_bytes, void *out, size_t out_bytes); |
| |
| if (CONFIG(SPI_FLASH_NO_FAST_READ)) { |
| cmd_len = 4 + ADDR_MOD; |
| cmd[0] = CMD_READ_ARRAY_SLOW; |
| do_cmd = do_spi_flash_cmd; |
| } else if (flash->flags.dual_io && flash->spi.ctrlr->xfer_dual) { |
| cmd_len = 5 + ADDR_MOD; |
| cmd[0] = CMD_READ_FAST_DUAL_IO; |
| cmd[4 + ADDR_MOD] = 0; |
| do_cmd = do_dual_io_cmd; |
| } else if (flash->flags.dual_output && flash->spi.ctrlr->xfer_dual) { |
| cmd_len = 5 + ADDR_MOD; |
| cmd[0] = CMD_READ_FAST_DUAL_OUTPUT; |
| cmd[4 + ADDR_MOD] = 0; |
| do_cmd = do_dual_output_cmd; |
| } else { |
| cmd_len = 5 + ADDR_MOD; |
| cmd[0] = CMD_READ_ARRAY_FAST; |
| cmd[4 + ADDR_MOD] = 0; |
| do_cmd = do_spi_flash_cmd; |
| } |
| |
| uint8_t *data = buf; |
| while (len) { |
| size_t xfer_len = spi_crop_chunk(&flash->spi, cmd_len, len); |
| spi_flash_addr(offset, cmd); |
| ret = do_cmd(&flash->spi, cmd, cmd_len, data, xfer_len); |
| if (ret) { |
| printk(BIOS_WARNING, |
| "SF: Failed to send read command %#.2x(%#x, %#zx): %d\n", |
| cmd[0], offset, xfer_len, ret); |
| return ret; |
| } |
| offset += xfer_len; |
| data += xfer_len; |
| len -= xfer_len; |
| } |
| |
| return 0; |
| } |
| |
| int spi_flash_cmd_poll_bit(const struct spi_flash *flash, unsigned long timeout, |
| u8 cmd, u8 poll_bit) |
| { |
| const struct spi_slave *spi = &flash->spi; |
| int ret; |
| int attempt = 0; |
| u8 status; |
| struct stopwatch sw; |
| |
| stopwatch_init_msecs_expire(&sw, timeout); |
| do { |
| attempt++; |
| |
| ret = do_spi_flash_cmd(spi, &cmd, 1, &status, 1); |
| if (ret) { |
| printk(BIOS_WARNING, |
| "SF: SPI command failed on attempt %d with rc %d\n", attempt, |
| ret); |
| return -1; |
| } |
| |
| if ((status & poll_bit) == 0) |
| return 0; |
| } while (!stopwatch_expired(&sw)); |
| |
| printk(BIOS_WARNING, "SF: timeout at %lld msec after %d attempts\n", |
| stopwatch_duration_msecs(&sw), attempt); |
| |
| return -1; |
| } |
| |
| int spi_flash_cmd_wait_ready(const struct spi_flash *flash, |
| unsigned long timeout) |
| { |
| return spi_flash_cmd_poll_bit(flash, timeout, |
| CMD_READ_STATUS, STATUS_WIP); |
| } |
| |
| int spi_flash_cmd_erase(const struct spi_flash *flash, u32 offset, size_t len) |
| { |
| u32 start, end, erase_size; |
| int ret = -1; |
| u8 cmd[4 + ADDR_MOD]; |
| |
| erase_size = flash->sector_size; |
| if (offset % erase_size || len % erase_size) { |
| printk(BIOS_WARNING, "SF: Erase offset/length not multiple of erase size\n"); |
| return -1; |
| } |
| if (len == 0) { |
| printk(BIOS_WARNING, "SF: Erase length cannot be 0\n"); |
| return -1; |
| } |
| |
| cmd[0] = flash->erase_cmd; |
| start = offset; |
| end = start + len; |
| |
| while (offset < end) { |
| spi_flash_addr(offset, cmd); |
| offset += erase_size; |
| |
| if (CONFIG(DEBUG_SPI_FLASH)) { |
| if (ADDR_MOD) |
| printk(BIOS_SPEW, "SF: erase %2x %2x %2x %2x %2x (%x)\n", |
| cmd[0], cmd[1], cmd[2], cmd[3], cmd[4], offset); |
| else |
| printk(BIOS_SPEW, "SF: erase %2x %2x %2x %2x (%x)\n", |
| cmd[0], cmd[1], cmd[2], cmd[3], offset); |
| } |
| |
| ret = spi_flash_cmd(&flash->spi, CMD_WRITE_ENABLE, NULL, 0); |
| if (ret) |
| goto out; |
| |
| ret = spi_flash_cmd_write(&flash->spi, cmd, sizeof(cmd), NULL, 0); |
| if (ret) |
| goto out; |
| |
| ret = spi_flash_cmd_wait_ready(flash, |
| SPI_FLASH_PAGE_ERASE_TIMEOUT_MS); |
| if (ret) |
| goto out; |
| } |
| |
| printk(BIOS_DEBUG, "SF: Successfully erased %zu bytes @ %#x\n", len, start); |
| |
| out: |
| return ret; |
| } |
| |
| int spi_flash_cmd_status(const struct spi_flash *flash, u8 *reg) |
| { |
| return spi_flash_cmd(&flash->spi, flash->status_cmd, reg, sizeof(*reg)); |
| } |
| |
| int spi_flash_cmd_write_page_program(const struct spi_flash *flash, u32 offset, |
| size_t len, const void *buf) |
| { |
| unsigned long byte_addr; |
| unsigned long page_size; |
| size_t chunk_len; |
| size_t actual; |
| int ret = 0; |
| u8 cmd[4 + ADDR_MOD]; |
| |
| page_size = flash->page_size; |
| cmd[0] = flash->pp_cmd; |
| |
| for (actual = 0; actual < len; actual += chunk_len) { |
| byte_addr = offset % page_size; |
| chunk_len = MIN(len - actual, page_size - byte_addr); |
| chunk_len = spi_crop_chunk(&flash->spi, sizeof(cmd), chunk_len); |
| |
| spi_flash_addr(offset, cmd); |
| if (CONFIG(DEBUG_SPI_FLASH)) { |
| if (ADDR_MOD) |
| printk(BIOS_SPEW, |
| "PP: %p => cmd = { 0x%02x 0x%02x%02x%02x%02x } chunk_len = %zu\n", |
| buf + actual, cmd[0], cmd[1], cmd[2], cmd[3], cmd[4], |
| chunk_len); |
| else |
| printk(BIOS_SPEW, |
| "PP: %p => cmd = { 0x%02x 0x%02x%02x%02x } chunk_len = %zu\n", |
| buf + actual, cmd[0], cmd[1], cmd[2], cmd[3], |
| chunk_len); |
| } |
| |
| ret = spi_flash_cmd(&flash->spi, flash->wren_cmd, NULL, 0); |
| if (ret < 0) { |
| printk(BIOS_WARNING, "SF: Enabling Write failed\n"); |
| goto out; |
| } |
| |
| ret = spi_flash_cmd_write(&flash->spi, cmd, sizeof(cmd), |
| buf + actual, chunk_len); |
| if (ret < 0) { |
| printk(BIOS_WARNING, "SF: Page Program failed\n"); |
| goto out; |
| } |
| |
| ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT_MS); |
| if (ret) |
| goto out; |
| |
| offset += chunk_len; |
| } |
| |
| if (CONFIG(DEBUG_SPI_FLASH)) |
| printk(BIOS_SPEW, "SF: : Successfully programmed %zu bytes @ 0x%lx\n", |
| len, (unsigned long)(offset - len)); |
| ret = 0; |
| |
| out: |
| return ret; |
| } |
| |
| static const struct spi_flash_vendor_info *spi_flash_vendors[] = { |
| #if CONFIG(SPI_FLASH_ADESTO) |
| &spi_flash_adesto_vi, |
| #endif |
| #if CONFIG(SPI_FLASH_AMIC) |
| &spi_flash_amic_vi, |
| #endif |
| #if CONFIG(SPI_FLASH_ATMEL) |
| &spi_flash_atmel_vi, |
| #endif |
| #if CONFIG(SPI_FLASH_EON) |
| &spi_flash_eon_vi, |
| #endif |
| #if CONFIG(SPI_FLASH_GIGADEVICE) |
| &spi_flash_gigadevice_vi, |
| #endif |
| #if CONFIG(SPI_FLASH_MACRONIX) |
| &spi_flash_macronix_vi, |
| #endif |
| #if CONFIG(SPI_FLASH_SPANSION) |
| &spi_flash_spansion_ext1_vi, |
| &spi_flash_spansion_ext2_vi, |
| &spi_flash_spansion_vi, |
| #endif |
| #if CONFIG(SPI_FLASH_SST) |
| &spi_flash_sst_ai_vi, |
| &spi_flash_sst_vi, |
| #endif |
| #if CONFIG(SPI_FLASH_STMICRO) |
| &spi_flash_stmicro1_vi, |
| &spi_flash_stmicro2_vi, |
| &spi_flash_stmicro3_vi, |
| &spi_flash_stmicro4_vi, |
| #endif |
| #if CONFIG(SPI_FLASH_WINBOND) |
| &spi_flash_winbond_vi, |
| #endif |
| }; |
| #define IDCODE_LEN 5 |
| |
| static int fill_spi_flash(const struct spi_slave *spi, struct spi_flash *flash, |
| const struct spi_flash_vendor_info *vi, |
| const struct spi_flash_part_id *part) |
| { |
| memcpy(&flash->spi, spi, sizeof(*spi)); |
| flash->vendor = vi->id; |
| flash->model = part->id[0]; |
| |
| flash->page_size = 1U << vi->page_size_shift; |
| flash->sector_size = (1U << vi->sector_size_kib_shift) * KiB; |
| flash->size = flash->sector_size * (1U << part->nr_sectors_shift); |
| flash->erase_cmd = vi->desc->erase_cmd; |
| flash->status_cmd = vi->desc->status_cmd; |
| flash->pp_cmd = vi->desc->pp_cmd; |
| flash->wren_cmd = vi->desc->wren_cmd; |
| |
| flash->flags.dual_output = part->fast_read_dual_output_support; |
| flash->flags.dual_io = part->fast_read_dual_io_support; |
| |
| flash->ops = &vi->desc->ops; |
| flash->prot_ops = vi->prot_ops; |
| flash->part = part; |
| |
| if (vi->after_probe) |
| return vi->after_probe(flash); |
| |
| return 0; |
| } |
| |
| static const struct spi_flash_part_id *find_part(const struct spi_flash_vendor_info *vi, |
| uint16_t id[2]) |
| { |
| size_t i; |
| const uint16_t lid[2] = { |
| [0] = id[0] & vi->match_id_mask[0], |
| [1] = id[1] & vi->match_id_mask[1], |
| }; |
| |
| for (i = 0; i < vi->nr_part_ids; i++) { |
| const struct spi_flash_part_id *part = &vi->ids[i]; |
| |
| if (part->id[0] == lid[0] && part->id[1] == lid[1]) |
| return part; |
| } |
| |
| return NULL; |
| } |
| |
| static int find_match(const struct spi_slave *spi, struct spi_flash *flash, |
| uint8_t manuf_id, uint16_t id[2]) |
| { |
| int i; |
| |
| for (i = 0; i < (int)ARRAY_SIZE(spi_flash_vendors); i++) { |
| const struct spi_flash_vendor_info *vi; |
| const struct spi_flash_part_id *part; |
| |
| vi = spi_flash_vendors[i]; |
| |
| if (manuf_id != vi->id) |
| continue; |
| |
| part = find_part(vi, id); |
| |
| if (part == NULL) |
| continue; |
| |
| return fill_spi_flash(spi, flash, vi, part); |
| } |
| |
| printk(BIOS_WARNING, "SF: no match for ID %04x %04x\n", id[0], id[1]); |
| return -1; |
| } |
| |
| int spi_flash_generic_probe(const struct spi_slave *spi, |
| struct spi_flash *flash) |
| { |
| int ret, i; |
| u8 idcode[IDCODE_LEN]; |
| u8 manuf_id; |
| u16 id[2]; |
| |
| /* Read the ID codes */ |
| ret = spi_flash_cmd(spi, CMD_READ_ID, idcode, sizeof(idcode)); |
| if (ret) |
| return -1; |
| |
| if (CONFIG(DEBUG_SPI_FLASH)) { |
| printk(BIOS_SPEW, "SF: Got idcode: "); |
| for (i = 0; i < sizeof(idcode); i++) |
| printk(BIOS_SPEW, "%02x ", idcode[i]); |
| printk(BIOS_SPEW, "\n"); |
| } |
| |
| manuf_id = idcode[0]; |
| |
| printk(BIOS_INFO, "Manufacturer: %02x\n", manuf_id); |
| |
| /* If no result from RDID command and STMicro parts are enabled attempt |
| to wake the part from deep sleep and obtain alternative id info. */ |
| if (CONFIG(SPI_FLASH_STMICRO) && manuf_id == 0xff) { |
| if (stmicro_release_deep_sleep_identify(spi, idcode)) |
| return -1; |
| manuf_id = idcode[0]; |
| } |
| |
| id[0] = (idcode[1] << 8) | idcode[2]; |
| id[1] = (idcode[3] << 8) | idcode[4]; |
| |
| return find_match(spi, flash, manuf_id, id); |
| } |
| |
| int spi_flash_probe(unsigned int bus, unsigned int cs, struct spi_flash *flash) |
| { |
| struct spi_slave spi; |
| int ret = -1; |
| |
| if (spi_setup_slave(bus, cs, &spi)) { |
| printk(BIOS_WARNING, "SF: Failed to set up slave\n"); |
| return -1; |
| } |
| |
| /* Try special programmer probe if any. */ |
| if (spi.ctrlr->flash_probe) |
| ret = spi.ctrlr->flash_probe(&spi, flash); |
| |
| /* If flash is not found, try generic spi flash probe. */ |
| if (ret) |
| ret = spi_flash_generic_probe(&spi, flash); |
| |
| /* Give up -- nothing more to try if flash is not found. */ |
| if (ret) { |
| printk(BIOS_WARNING, "SF: Unsupported manufacturer!\n"); |
| return -1; |
| } |
| |
| const char *mode_string = ""; |
| if (flash->flags.dual_io && spi.ctrlr->xfer_dual) |
| mode_string = " (Dual I/O mode)"; |
| else if (flash->flags.dual_output && spi.ctrlr->xfer_dual) |
| mode_string = " (Dual Output mode)"; |
| printk(BIOS_INFO, |
| "SF: Detected %02x %04x with sector size 0x%x, total 0x%x%s\n", |
| flash->vendor, flash->model, flash->sector_size, flash->size, mode_string); |
| if (bus == CONFIG_BOOT_DEVICE_SPI_FLASH_BUS |
| && flash->size != CONFIG_ROM_SIZE) { |
| printk(BIOS_ERR, "SF size 0x%x does not correspond to" |
| " CONFIG_ROM_SIZE 0x%x!!\n", flash->size, |
| CONFIG_ROM_SIZE); |
| } |
| |
| if (CONFIG(SPI_FLASH_EXIT_4_BYTE_ADDR_MODE) && SPI_FLASH_EXIT_4BYTE_STAGE) { |
| printk(BIOS_DEBUG, "SF: Exiting 4-byte addressing mode\n"); |
| spi_flash_cmd(&flash->spi, CMD_EXIT_4BYTE_ADDR_MODE, NULL, 0); |
| } |
| |
| return 0; |
| } |
| |
| int spi_flash_read(const struct spi_flash *flash, u32 offset, size_t len, |
| void *buf) |
| { |
| return flash->ops->read(flash, offset, len, buf); |
| } |
| |
| int spi_flash_write(const struct spi_flash *flash, u32 offset, size_t len, |
| const void *buf) |
| { |
| int ret; |
| |
| if (spi_flash_volatile_group_begin(flash)) |
| return -1; |
| |
| ret = flash->ops->write(flash, offset, len, buf); |
| |
| if (spi_flash_volatile_group_end(flash)) |
| return -1; |
| |
| return ret; |
| } |
| |
| int spi_flash_erase(const struct spi_flash *flash, u32 offset, size_t len) |
| { |
| int ret; |
| |
| if (spi_flash_volatile_group_begin(flash)) |
| return -1; |
| |
| ret = flash->ops->erase(flash, offset, len); |
| |
| if (spi_flash_volatile_group_end(flash)) |
| return -1; |
| |
| return ret; |
| } |
| |
| int spi_flash_status(const struct spi_flash *flash, u8 *reg) |
| { |
| if (flash->ops->status) |
| return flash->ops->status(flash, reg); |
| |
| return -1; |
| } |
| |
| int spi_flash_is_write_protected(const struct spi_flash *flash, |
| const struct region *region) |
| { |
| struct region flash_region = { 0 }; |
| |
| if (!flash || !region) |
| return -1; |
| |
| flash_region.size = flash->size; |
| |
| if (!region_is_subregion(&flash_region, region)) |
| return -1; |
| |
| if (!flash->prot_ops) { |
| printk(BIOS_WARNING, "SPI: Write-protection gathering not " |
| "implemented for this vendor.\n"); |
| return -1; |
| } |
| |
| return flash->prot_ops->get_write(flash, region); |
| } |
| |
| int spi_flash_set_write_protected(const struct spi_flash *flash, |
| const struct region *region, |
| const enum spi_flash_status_reg_lockdown mode) |
| { |
| struct region flash_region = { 0 }; |
| int ret; |
| |
| if (!flash) |
| return -1; |
| |
| flash_region.size = flash->size; |
| |
| if (!region_is_subregion(&flash_region, region)) |
| return -1; |
| |
| if (!flash->prot_ops) { |
| printk(BIOS_WARNING, "SPI: Setting write-protection is not " |
| "implemented for this vendor.\n"); |
| return -1; |
| } |
| |
| ret = flash->prot_ops->set_write(flash, region, mode); |
| |
| if (ret == 0 && mode != SPI_WRITE_PROTECTION_PRESERVE) { |
| printk(BIOS_INFO, "SPI: SREG lock-down was set to "); |
| switch (mode) { |
| case SPI_WRITE_PROTECTION_NONE: |
| printk(BIOS_INFO, "NEVER\n"); |
| break; |
| case SPI_WRITE_PROTECTION_PIN: |
| printk(BIOS_INFO, "WP\n"); |
| break; |
| case SPI_WRITE_PROTECTION_REBOOT: |
| printk(BIOS_INFO, "REBOOT\n"); |
| break; |
| case SPI_WRITE_PROTECTION_PERMANENT: |
| printk(BIOS_INFO, "PERMANENT\n"); |
| break; |
| default: |
| printk(BIOS_INFO, "UNKNOWN\n"); |
| break; |
| } |
| } |
| |
| return ret; |
| } |
| |
| static uint32_t volatile_group_count; |
| |
| int spi_flash_volatile_group_begin(const struct spi_flash *flash) |
| { |
| uint32_t count; |
| int ret = 0; |
| |
| if (!CONFIG(SPI_FLASH_HAS_VOLATILE_GROUP)) |
| return ret; |
| |
| count = volatile_group_count; |
| if (count == 0) |
| ret = chipset_volatile_group_begin(flash); |
| |
| count++; |
| volatile_group_count = count; |
| return ret; |
| } |
| |
| int spi_flash_volatile_group_end(const struct spi_flash *flash) |
| { |
| uint32_t count; |
| int ret = 0; |
| |
| if (!CONFIG(SPI_FLASH_HAS_VOLATILE_GROUP)) |
| return ret; |
| |
| count = volatile_group_count; |
| assert(count == 0); |
| count--; |
| volatile_group_count = count; |
| |
| if (count == 0) |
| ret = chipset_volatile_group_end(flash); |
| |
| return ret; |
| } |
| |
| void lb_spi_flash(struct lb_header *header) |
| { |
| struct lb_spi_flash *flash; |
| const struct spi_flash *spi_flash_dev; |
| |
| if (!CONFIG(BOOT_DEVICE_SPI_FLASH)) |
| return; |
| |
| flash = (struct lb_spi_flash *)lb_new_record(header); |
| |
| flash->tag = LB_TAG_SPI_FLASH; |
| flash->size = sizeof(*flash); |
| |
| spi_flash_dev = boot_device_spi_flash(); |
| |
| if (spi_flash_dev) { |
| flash->flash_size = spi_flash_dev->size; |
| flash->sector_size = spi_flash_dev->sector_size; |
| flash->erase_cmd = spi_flash_dev->erase_cmd; |
| } else { |
| flash->flash_size = CONFIG_ROM_SIZE; |
| /* Default 64k erase command should work on most flash. |
| * Uniform 4k erase only works on certain devices. */ |
| flash->sector_size = 64 * KiB; |
| flash->erase_cmd = CMD_BLOCK_ERASE; |
| } |
| |
| if (!CONFIG(BOOT_DEVICE_MEMORY_MAPPED)) { |
| flash->mmap_count = 0; |
| } else { |
| struct flash_mmap_window *table = (struct flash_mmap_window *)(flash + 1); |
| flash->mmap_count = spi_flash_get_mmap_windows(table); |
| flash->size += flash->mmap_count * sizeof(*table); |
| } |
| } |
| |
| int spi_flash_ctrlr_protect_region(const struct spi_flash *flash, |
| const struct region *region, |
| const enum ctrlr_prot_type type) |
| { |
| const struct spi_ctrlr *ctrlr; |
| struct region flash_region = { 0 }; |
| |
| if (!flash) |
| return -1; |
| |
| flash_region.size = flash->size; |
| |
| if (!region_is_subregion(&flash_region, region)) |
| return -1; |
| |
| ctrlr = flash->spi.ctrlr; |
| |
| if (!ctrlr) |
| return -1; |
| |
| if (ctrlr->flash_protect) |
| return ctrlr->flash_protect(flash, region, type); |
| |
| return -1; |
| } |
| |
| int spi_flash_vector_helper(const struct spi_slave *slave, |
| struct spi_op vectors[], size_t count, |
| int (*func)(const struct spi_slave *slave, const void *dout, |
| size_t bytesout, void *din, size_t bytesin)) |
| { |
| int ret; |
| void *din; |
| size_t bytes_in; |
| |
| if (count < 1 || count > 2) |
| return -1; |
| |
| /* SPI flash commands always have a command first... */ |
| if (!vectors[0].dout || !vectors[0].bytesout) |
| return -1; |
| /* And not read any data during the command. */ |
| if (vectors[0].din || vectors[0].bytesin) |
| return -1; |
| |
| if (count == 2) { |
| /* If response bytes requested ensure the buffer is valid. */ |
| if (vectors[1].bytesin && !vectors[1].din) |
| return -1; |
| /* No sends can accompany a receive. */ |
| if (vectors[1].dout || vectors[1].bytesout) |
| return -1; |
| din = vectors[1].din; |
| bytes_in = vectors[1].bytesin; |
| } else { |
| din = NULL; |
| bytes_in = 0; |
| } |
| |
| ret = func(slave, vectors[0].dout, vectors[0].bytesout, din, bytes_in); |
| |
| if (ret) { |
| vectors[0].status = SPI_OP_FAILURE; |
| if (count == 2) |
| vectors[1].status = SPI_OP_FAILURE; |
| } else { |
| vectors[0].status = SPI_OP_SUCCESS; |
| if (count == 2) |
| vectors[1].status = SPI_OP_SUCCESS; |
| } |
| |
| return ret; |
| } |
| |
| const struct spi_flash_ops_descriptor spi_flash_pp_0x20_sector_desc = { |
| .erase_cmd = 0x20, /* Sector Erase */ |
| .status_cmd = 0x05, /* Read Status */ |
| .pp_cmd = 0x02, /* Page Program */ |
| .wren_cmd = 0x06, /* Write Enable */ |
| .ops = { |
| .read = spi_flash_cmd_read, |
| .write = spi_flash_cmd_write_page_program, |
| .erase = spi_flash_cmd_erase, |
| .status = spi_flash_cmd_status, |
| }, |
| }; |
| |
| const struct spi_flash_ops_descriptor spi_flash_pp_0xd8_sector_desc = { |
| .erase_cmd = 0xd8, /* Sector Erase */ |
| .status_cmd = 0x05, /* Read Status */ |
| .pp_cmd = 0x02, /* Page Program */ |
| .wren_cmd = 0x06, /* Write Enable */ |
| .ops = { |
| .read = spi_flash_cmd_read, |
| .write = spi_flash_cmd_write_page_program, |
| .erase = spi_flash_cmd_erase, |
| .status = spi_flash_cmd_status, |
| }, |
| }; |