diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/mainboard/siemens/mc_apl1/mainboard.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/src/mainboard/siemens/mc_apl1/mainboard.c b/src/mainboard/siemens/mc_apl1/mainboard.c index b81da5f794..1d37d682b2 100644 --- a/src/mainboard/siemens/mc_apl1/mainboard.c +++ b/src/mainboard/siemens/mc_apl1/mainboard.c @@ -36,6 +36,51 @@ #define BIOS_MAILBOX_INTERFACE 0x7084 #define RUN_BUSY_STS (1 << 31) +/* + * 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 /* PP: Page 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_OPTYPE 0xa4 +#define SPI_REG_OPMENU_L 0xa8 +#define SPI_REG_OPMENU_H 0xac + /** \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 @@ -197,6 +242,7 @@ static void mainboard_final(void *chip_info) { uint16_t cmd = 0; struct device *dev = NULL; + void *spi_base = NULL; /* Do board specific things */ variant_mainboard_final(); @@ -208,6 +254,15 @@ static void mainboard_final(void *chip_info) cmd |= PCI_COMMAND_MASTER; pci_write_config16(dev, PCI_COMMAND, cmd); } + /* Set up SPI OPCODE menu before the controller is locked. */ + dev = PCH_DEV_SPI; + spi_base = (void *)pci_read_config32(dev, PCI_BASE_ADDRESS_0); + if (!spi_base) + return; + write32((spi_base + SPI_REG_PREOP_OPTYPE), + ((SPI_OPTYPE << 16) | SPI_OPPREFIX)); + write32((spi_base + SPI_REG_OPMENU_L), SPI_OPMENU_LOWER); + write32((spi_base + SPI_REG_OPMENU_H), SPI_OPMENU_UPPER); } /* The following function performs board specific things. */ |