diff options
| -rw-r--r-- | src/drivers/spi/Kconfig | 17 | ||||
| -rw-r--r-- | src/drivers/spi/Makefile.inc | 5 | ||||
| -rw-r--r-- | src/drivers/spi/boot_device_rw_nommap.c | 90 |
3 files changed, 112 insertions, 0 deletions
diff --git a/src/drivers/spi/Kconfig b/src/drivers/spi/Kconfig index 5eb9b56557..4c2fd1f060 100644 --- a/src/drivers/spi/Kconfig +++ b/src/drivers/spi/Kconfig @@ -39,6 +39,23 @@ config BOOT_DEVICE_SPI_FLASH_BUS help Which SPI bus the boot device is connected to. +config BOOT_DEVICE_SPI_FLASH_RW_NOMMAP + bool + default y if !COMMON_CBFS_SPI_WRAPPER + default n + depends on BOOT_DEVICE_SPI_FLASH + help + Provide common implementation of the RW boot device that + doesn't provide mmap() operations. + +config BOOT_DEVICE_SPI_FLASH_RW_NOMMAP_EARLY + bool + default n + depends on BOOT_DEVICE_SPI_FLASH_RW_NOMMAP + help + Include the common implementation in all stages, including the + early ones. + config SPI_FLASH_INCLUDE_ALL_DRIVERS bool default n if COMMON_CBFS_SPI_WRAPPER diff --git a/src/drivers/spi/Makefile.inc b/src/drivers/spi/Makefile.inc index 8fd59846dc..92baf62bc3 100644 --- a/src/drivers/spi/Makefile.inc +++ b/src/drivers/spi/Makefile.inc @@ -9,6 +9,7 @@ endif bootblock-$(CONFIG_COMMON_CBFS_SPI_WRAPPER) += cbfs_spi.c bootblock-$(CONFIG_SPI_FLASH) += spi_flash.c +bootblock-$(CONFIG_BOOT_DEVICE_SPI_FLASH_RW_NOMMAP_EARLY) += boot_device_rw_nommap.c bootblock-$(CONFIG_SPI_FLASH_ADESTO) += adesto.c bootblock-$(CONFIG_SPI_FLASH_AMIC) += amic.c bootblock-$(CONFIG_SPI_FLASH_ATMEL) += atmel.c @@ -23,6 +24,7 @@ bootblock-$(CONFIG_SPI_FRAM_RAMTRON) += ramtron.c romstage-$(CONFIG_COMMON_CBFS_SPI_WRAPPER) += cbfs_spi.c romstage-$(CONFIG_SPI_FLASH) += spi_flash.c +romstage-$(CONFIG_BOOT_DEVICE_SPI_FLASH_RW_NOMMAP_EARLY) += boot_device_rw_nommap.c romstage-$(CONFIG_SPI_FLASH_ADESTO) += adesto.c romstage-$(CONFIG_SPI_FLASH_AMIC) += amic.c romstage-$(CONFIG_SPI_FLASH_ATMEL) += atmel.c @@ -37,6 +39,7 @@ romstage-$(CONFIG_SPI_FRAM_RAMTRON) += ramtron.c verstage-$(CONFIG_COMMON_CBFS_SPI_WRAPPER) += cbfs_spi.c verstage-$(CONFIG_SPI_FLASH) += spi_flash.c +verstage-$(CONFIG_BOOT_DEVICE_SPI_FLASH_RW_NOMMAP_EARLY) += boot_device_rw_nommap.c verstage-$(CONFIG_SPI_FLASH_ADESTO) += adesto.c verstage-$(CONFIG_SPI_FLASH_AMIC) += amic.c verstage-$(CONFIG_SPI_FLASH_ATMEL) += atmel.c @@ -51,6 +54,7 @@ verstage-$(CONFIG_SPI_FRAM_RAMTRON) += ramtron.c ramstage-$(CONFIG_COMMON_CBFS_SPI_WRAPPER) += cbfs_spi.c ramstage-$(CONFIG_SPI_FLASH) += spi_flash.c +ramstage-$(CONFIG_BOOT_DEVICE_SPI_FLASH_RW_NOMMAP) += boot_device_rw_nommap.c ramstage-$(CONFIG_SPI_FLASH_ADESTO) += adesto.c ramstage-$(CONFIG_SPI_FLASH_AMIC) += amic.c ramstage-$(CONFIG_SPI_FLASH_ATMEL) += atmel.c @@ -66,6 +70,7 @@ ramstage-$(CONFIG_SPI_FRAM_RAMTRON) += ramtron.c ifeq ($(CONFIG_SPI_FLASH_SMM),y) # SPI flash driver interface smm-$(CONFIG_SPI_FLASH) += spi_flash.c +smm-$(CONFIG_BOOT_DEVICE_SPI_FLASH_RW_NOMMAP) += boot_device_rw_nommap.c # drivers smm-$(CONFIG_SPI_FLASH_ADESTO) += adesto.c diff --git a/src/drivers/spi/boot_device_rw_nommap.c b/src/drivers/spi/boot_device_rw_nommap.c new file mode 100644 index 0000000000..2a9f19f1f8 --- /dev/null +++ b/src/drivers/spi/boot_device_rw_nommap.c @@ -0,0 +1,90 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2016 Google Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <arch/early_variables.h> +#include <boot_device.h> +#include <spi_flash.h> + +static struct spi_flash *sfg CAR_GLOBAL; + +static ssize_t spi_readat(const struct region_device *rd, void *b, + size_t offset, size_t size) +{ + struct spi_flash *sf = car_get_var(sfg); + + if (sf == NULL) + return -1; + + if (sf->read(sf, offset, size, b)) + return -1; + + return size; +} + +static ssize_t spi_writeat(const struct region_device *rd, const void *b, + size_t offset, size_t size) +{ + struct spi_flash *sf = car_get_var(sfg); + + if (sf == NULL) + return -1; + + if (sf->write(sf, offset, size, b)) + return -1; + + return size; +} + +static ssize_t spi_eraseat(const struct region_device *rd, + size_t offset, size_t size) +{ + struct spi_flash *sf = car_get_var(sfg); + + if (sf == NULL) + return -1; + + if (sf->erase(sf, offset, size)) + return -1; + + return size; +} + +static const struct region_device_ops spi_ops = { + .readat = spi_readat, + .writeat = spi_writeat, + .eraseat = spi_eraseat, +}; + +static const struct region_device spi_rw = + REGION_DEV_INIT(&spi_ops, 0, CONFIG_ROM_SIZE); + +void boot_device_init(void) +{ + const int bus = CONFIG_BOOT_DEVICE_SPI_FLASH_BUS; + const int cs = 0; + + if (car_get_var(sfg) != NULL) + return; + + car_set_var(sfg, spi_flash_probe(bus, cs)); +} + +const struct region_device *boot_device_rw(void) +{ + if (car_get_var(sfg) == NULL) + return NULL; + + return &spi_rw; +} |