diff options
Diffstat (limited to 'src/mainboard/siemens')
| -rw-r--r-- | src/mainboard/siemens/mc_bdx1/mainboard.c | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/src/mainboard/siemens/mc_bdx1/mainboard.c b/src/mainboard/siemens/mc_bdx1/mainboard.c index af886a9b5b..bad072b96e 100644 --- a/src/mainboard/siemens/mc_bdx1/mainboard.c +++ b/src/mainboard/siemens/mc_bdx1/mainboard.c @@ -31,9 +31,57 @@ #include <boot/coreboot_tables.h> #include <hwilib.h> #include <i210.h> +#include <soc/pci_devs.h> #define MAX_PATH_DEPTH 12 #define MAX_NUM_MAPPINGS 10 + +/* + * SPI Opcode Menu setup for SPIBAR lock down + * should support most common flash chips. + */ +#define SPI_OPMENU_0 0x01 /* WRSR: Write Status Register */ +#define SPI_OPTYPE_0 0x01 /* Write, no address */ + +#define SPI_OPMENU_1 0x02 /* BYPR: Byte Program */ +#define SPI_OPTYPE_1 0x03 /* Write, address required */ + +#define SPI_OPMENU_2 0x03 /* READ: Read Data */ +#define SPI_OPTYPE_2 0x02 /* Read, address required */ + +#define SPI_OPMENU_3 0x05 /* RDSR: Read Status Register */ +#define SPI_OPTYPE_3 0x00 /* Read, no address */ + +#define SPI_OPMENU_4 0x20 /* SE20: Sector Erase 0x20 */ +#define SPI_OPTYPE_4 0x03 /* Write, address required */ + +#define SPI_OPMENU_5 0x9f /* RDID: Read ID */ +#define SPI_OPTYPE_5 0x00 /* Read, no address */ + +#define SPI_OPMENU_6 0xd8 /* BED8: Block Erase 0xd8 */ +#define SPI_OPTYPE_6 0x03 /* Write, address required */ + +#define SPI_OPMENU_7 0x0b /* FAST: Fast Read */ +#define SPI_OPTYPE_7 0x02 /* Read, address required */ + +#define SPI_OPMENU_UPPER ((SPI_OPMENU_7 << 24) | (SPI_OPMENU_6 << 16) | \ + (SPI_OPMENU_5 << 8) | SPI_OPMENU_4) +#define SPI_OPMENU_LOWER ((SPI_OPMENU_3 << 24) | (SPI_OPMENU_2 << 16) | \ + (SPI_OPMENU_1 << 8) | SPI_OPMENU_0) + +#define SPI_OPTYPE ((SPI_OPTYPE_7 << 14) | (SPI_OPTYPE_6 << 12) | \ + (SPI_OPTYPE_5 << 10) | (SPI_OPTYPE_4 << 8) | \ + (SPI_OPTYPE_3 << 6) | (SPI_OPTYPE_2 << 4) | \ + (SPI_OPTYPE_1 << 2) | (SPI_OPTYPE_0)) + +#define SPI_OPPREFIX ((0x50 << 8) | 0x06) /* EWSR and WREN */ + +#define SPIBAR_OFFSET 0x3800 +#define SPI_REG_PREOP 0x94 +#define SPI_REG_OPTYPE 0x96 +#define SPI_REG_OPMENU_L 0x98 +#define SPI_REG_OPMENU_H 0x9c + /* * mainboard_enable is executed as first thing after enumerate_buses(). * This is the earliest point to add customization. @@ -42,6 +90,25 @@ static void mainboard_enable(device_t dev) { } + +static void mainboard_final(void *chip_info) +{ + void *spi_base = NULL; + uint32_t rcba = 0; + device_t dev = dev_find_slot(0, PCI_DEVFN(LPC_DEV, LPC_FUNC)); + + /* Get address of SPI controller. */ + rcba = (pci_read_config32(dev, 0xf0) & 0xffffc000); + if (!rcba) + return; + spi_base = (void *)(rcba + SPIBAR_OFFSET); + /* Setup OPCODE menu */ + write16((spi_base + SPI_REG_PREOP), SPI_OPPREFIX); + write16((spi_base + SPI_REG_OPTYPE), SPI_OPTYPE); + write32((spi_base + SPI_REG_OPMENU_L), SPI_OPMENU_LOWER); + write32((spi_base + SPI_REG_OPMENU_H), SPI_OPMENU_UPPER); +} + /** \brief This function can decide if a given MAC address is valid or not. * Currently, addresses filled with 0xff or 0x00 are not valid. * @param mac Buffer to the MAC address to check @@ -116,4 +183,5 @@ enum cb_err mainboard_get_mac_address(struct device *dev, uint8_t mac[6]) struct chip_operations mainboard_ops = { .enable_dev = mainboard_enable, + .final = mainboard_final }; |