diff options
-rw-r--r-- | src/southbridge/intel/bd82x6x/spi.c | 323 | ||||
-rw-r--r-- | src/southbridge/intel/ibexpeak/spi.c | 323 |
2 files changed, 644 insertions, 2 deletions
diff --git a/src/southbridge/intel/bd82x6x/spi.c b/src/southbridge/intel/bd82x6x/spi.c index ec5d7de33e..1f2511e4b0 100644 --- a/src/southbridge/intel/bd82x6x/spi.c +++ b/src/southbridge/intel/bd82x6x/spi.c @@ -1,5 +1,7 @@ /* * Copyright (c) 2011 The Chromium OS Authors. + * Copyright (C) 2009, 2010 Carl-Daniel Hailfinger + * Copyright (C) 2011 Stefan Tauner * * See file CREDITS for list of people who contributed to this * project. @@ -28,11 +30,20 @@ #include <arch/io.h> #include <console/console.h> #include <device/pci_ids.h> +#include <device/pci.h> +#include <spi_flash.h> #include <spi-generic.h> +#include "pch.h" #define min(a, b) ((a)<(b)?(a):(b)) +#define HSFC_FCYCLE_OFF 1 /* 1-2: FLASH Cycle */ +#define HSFC_FCYCLE (0x3 << HSFC_FCYCLE_OFF) +#define HSFC_FDBC_OFF 8 /* 8-13: Flash Data Byte Count */ +#define HSFC_FDBC (0x3f << HSFC_FDBC_OFF) + + #ifdef __SMM__ #include <arch/pci_mmio_cfg.h> #define pci_read_config_byte(dev, reg, targ)\ @@ -64,6 +75,9 @@ pci_write_config32(dev, reg, val) #endif /* !__SMM__ */ +static int spi_is_multichip(void); +static struct spi_flash *spi_flash_hwseq(struct spi_slave *spi); + typedef struct spi_slave ich_spi_slave; static int ichspi_lock = 0; @@ -115,7 +129,11 @@ typedef struct ich9_spi_regs { typedef struct ich_spi_controller { int locked; + int revision; + uint32_t flmap0; + uint32_t hsfs; + ich9_spi_regs *ich9_spi; uint8_t *opmenu; int menubytes; uint16_t *preop; @@ -299,6 +317,10 @@ struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs, slave->bus = bus; slave->cs = cs; + if (cntlr.revision == 9) { + slave->force_programmer_specific = spi_is_multichip (); + slave->programmer_specific_probe = spi_flash_hwseq; + } return slave; } @@ -356,6 +378,7 @@ void spi_init(void) pci_read_config_dword(dev, 0xf0, &rcba); /* Bits 31-14 are the base address, 13-1 are reserved, 0 is enable. */ rcrb = (uint8_t *)(rcba & 0xffffc000); + cntlr.revision = ich_version; switch (ich_version) { case 7: { @@ -381,7 +404,11 @@ void spi_init(void) const uint16_t ich9_spibar_offset = 0x3800; ich9_spi_regs *ich9_spi = (ich9_spi_regs *)(rcrb + ich9_spibar_offset); - ichspi_lock = readw_(&ich9_spi->hsfs) & HSFS_FLOCKDN; + uint16_t hsfs; + cntlr.ich9_spi = ich9_spi; + hsfs = readw_(&ich9_spi->hsfs); + ichspi_lock = hsfs & HSFS_FLOCKDN; + cntlr.hsfs = hsfs; cntlr.opmenu = ich9_spi->opmenu; cntlr.menubytes = sizeof(ich9_spi->opmenu); cntlr.optype = &ich9_spi->optype; @@ -392,6 +419,12 @@ void spi_init(void) cntlr.control = (uint16_t *)ich9_spi->ssfc; cntlr.bbar = &ich9_spi->bbar; cntlr.preop = &ich9_spi->preop; + + if (cntlr.hsfs & HSFS_FDV) + { + writel_ (4, &ich9_spi->fdoc); + cntlr.flmap0 = readl_(&ich9_spi->fdod); + } break; } default: @@ -591,6 +624,15 @@ static int ich_status_poll(u16 bitmask, int wait_til_set) return -1; } +static int spi_is_multichip (void) +{ + if (cntlr.revision != 9) + return 0; + if (!(cntlr.hsfs & HSFS_FDV)) + return 0; + return !!((cntlr.flmap0 >> 8) & 3); +} + int spi_xfer(struct spi_slave *slave, const void *dout, unsigned int bitsout, void *din, unsigned int bitsin) { @@ -743,3 +785,282 @@ int spi_xfer(struct spi_slave *slave, const void *dout, return 0; } + +/* Sets FLA in FADDR to (addr & 0x01FFFFFF) without touching other bits. */ +static void ich_hwseq_set_addr(uint32_t addr) +{ + uint32_t addr_old = readl_(&cntlr.ich9_spi->faddr) & ~0x01FFFFFF; + writel_((addr & 0x01FFFFFF) | addr_old, &cntlr.ich9_spi->faddr); +} + +/* Polls for Cycle Done Status, Flash Cycle Error or timeout in 8 us intervals. + Resets all error flags in HSFS. + Returns 0 if the cycle completes successfully without errors within + timeout us, 1 on errors. */ +static int ich_hwseq_wait_for_cycle_complete(unsigned int timeout, + unsigned int len) +{ + uint16_t hsfs; + uint32_t addr; + + timeout /= 8; /* scale timeout duration to counter */ + while ((((hsfs = readw_(&cntlr.ich9_spi->hsfs)) & + (HSFS_FDONE | HSFS_FCERR)) == 0) && + --timeout) { + udelay(8); + } + writew_(readw_(&cntlr.ich9_spi->hsfs), &cntlr.ich9_spi->hsfs); + + if (!timeout) { + uint16_t hsfc; + addr = readl_(&cntlr.ich9_spi->faddr) & 0x01FFFFFF; + hsfc = readw_(&cntlr.ich9_spi->hsfc); + printk(BIOS_ERR, "Transaction timeout between offset 0x%08x and " + "0x%08x (= 0x%08x + %d) HSFC=%x HSFS=%x!\n", + addr, addr + len - 1, addr, len - 1, + hsfc, hsfs); + return 1; + } + + if (hsfs & HSFS_FCERR) { + uint16_t hsfc; + addr = readl_(&cntlr.ich9_spi->faddr) & 0x01FFFFFF; + hsfc = readw_(&cntlr.ich9_spi->hsfc); + printk(BIOS_ERR, "Transaction error between offset 0x%08x and " + "0x%08x (= 0x%08x + %d) HSFC=%x HSFS=%x!\n", + addr, addr + len - 1, addr, len - 1, + hsfc, hsfs); + return 1; + } + return 0; +} + + +static int ich_hwseq_erase(struct spi_flash *flash, u32 offset, size_t len) +{ + u32 start, end, erase_size; + int ret; + uint16_t hsfc; + uint16_t timeout = 1000 * 60; + + erase_size = flash->sector_size; + if (offset % erase_size || len % erase_size) { + printk(BIOS_ERR, "SF: Erase offset/length not multiple of erase size\n"); + return -1; + } + + flash->spi->rw = SPI_WRITE_FLAG; + ret = spi_claim_bus(flash->spi); + if (ret) { + printk(BIOS_ERR, "SF: Unable to claim SPI bus\n"); + return ret; + } + + start = offset; + end = start + len; + + while (offset < end) { + /* make sure FDONE, FCERR, AEL are cleared by writing 1 to them */ + writew_(readw_(&cntlr.ich9_spi->hsfs), &cntlr.ich9_spi->hsfs); + + ich_hwseq_set_addr(offset); + + offset += erase_size; + + hsfc = readw_(&cntlr.ich9_spi->hsfc); + hsfc &= ~HSFC_FCYCLE; /* clear operation */ + hsfc |= (0x3 << HSFC_FCYCLE_OFF); /* set erase operation */ + hsfc |= HSFC_FGO; /* start */ + writew_(hsfc, &cntlr.ich9_spi->hsfc); + if (ich_hwseq_wait_for_cycle_complete(timeout, len)) + { + printk(BIOS_ERR, "SF: Erase failed at %x\n", offset - erase_size); + ret = -1; + goto out; + } + } + + printk(BIOS_DEBUG, "SF: Successfully erased %zu bytes @ %#x\n", len, start); + +out: + spi_release_bus(flash->spi); + return ret; +} + +static void ich_read_data(uint8_t *data, int len) +{ + int i; + uint32_t temp32 = 0; + + for (i = 0; i < len; i++) { + if ((i % 4) == 0) + temp32 = readl_(cntlr.data + i); + + data[i] = (temp32 >> ((i % 4) * 8)) & 0xff; + } +} + +static int ich_hwseq_read(struct spi_flash *flash, + u32 addr, size_t len, void *buf) +{ + uint16_t hsfc; + uint16_t timeout = 100 * 60; + uint8_t block_len; + + if (addr + len > flash->size) { + printk (BIOS_ERR, + "Attempt to read %x-%x which is out of chip\n", + (unsigned) addr, + (unsigned) addr+(unsigned) len); + return -1; + } + + /* clear FDONE, FCERR, AEL by writing 1 to them (if they are set) */ + writew_(readw_(&cntlr.ich9_spi->hsfs), &cntlr.ich9_spi->hsfs); + + while (len > 0) { + block_len = min(len, cntlr.databytes); + if (block_len > (~addr & 0xff)) + block_len = (~addr & 0xff) + 1; + ich_hwseq_set_addr(addr); + hsfc = readw_(&cntlr.ich9_spi->hsfc); + hsfc &= ~HSFC_FCYCLE; /* set read operation */ + hsfc &= ~HSFC_FDBC; /* clear byte count */ + /* set byte count */ + hsfc |= (((block_len - 1) << HSFC_FDBC_OFF) & HSFC_FDBC); + hsfc |= HSFC_FGO; /* start */ + writew_(hsfc, &cntlr.ich9_spi->hsfc); + + if (ich_hwseq_wait_for_cycle_complete(timeout, block_len)) + return 1; + ich_read_data(buf, block_len); + addr += block_len; + buf += block_len; + len -= block_len; + } + return 0; +} + +/* Fill len bytes from the data array into the fdata/spid registers. + * + * Note that using len > flash->pgm->spi.max_data_write will trash the registers + * following the data registers. + */ +static void ich_fill_data(const uint8_t *data, int len) +{ + uint32_t temp32 = 0; + int i; + + if (len <= 0) + return; + + for (i = 0; i < len; i++) { + if ((i % 4) == 0) + temp32 = 0; + + temp32 |= ((uint32_t) data[i]) << ((i % 4) * 8); + + if ((i % 4) == 3) /* 32 bits are full, write them to regs. */ + writel_(temp32, cntlr.data + (i - (i % 4))); + } + i--; + if ((i % 4) != 3) /* Write remaining data to regs. */ + writel_(temp32, cntlr.data + (i - (i % 4))); +} + +static int ich_hwseq_write(struct spi_flash *flash, + u32 addr, size_t len, const void *buf) +{ + uint16_t hsfc; + uint16_t timeout = 100 * 60; + uint8_t block_len; + uint32_t start = addr; + + if (addr + len > flash->size) { + printk (BIOS_ERR, + "Attempt to write 0x%x-0x%x which is out of chip\n", + (unsigned)addr, (unsigned) (addr+len)); + return -1; + } + + /* clear FDONE, FCERR, AEL by writing 1 to them (if they are set) */ + writew_(readw_(&cntlr.ich9_spi->hsfs), &cntlr.ich9_spi->hsfs); + + while (len > 0) { + block_len = min(len, cntlr.databytes); + if (block_len > (~addr & 0xff)) + block_len = (~addr & 0xff) + 1; + + ich_hwseq_set_addr(addr); + + ich_fill_data(buf, block_len); + hsfc = readw_(&cntlr.ich9_spi->hsfc); + hsfc &= ~HSFC_FCYCLE; /* clear operation */ + hsfc |= (0x2 << HSFC_FCYCLE_OFF); /* set write operation */ + hsfc &= ~HSFC_FDBC; /* clear byte count */ + /* set byte count */ + hsfc |= (((block_len - 1) << HSFC_FDBC_OFF) & HSFC_FDBC); + hsfc |= HSFC_FGO; /* start */ + writew_(hsfc, &cntlr.ich9_spi->hsfc); + + if (ich_hwseq_wait_for_cycle_complete(timeout, block_len)) + { + printk (BIOS_ERR, "SF: write failure at %x\n", + addr); + return -1; + } + addr += block_len; + buf += block_len; + len -= block_len; + } + printk(BIOS_DEBUG, "SF: Successfully written %u bytes @ %#x\n", + (unsigned) (addr - start), start); + return 0; +} + + +static struct spi_flash *spi_flash_hwseq(struct spi_slave *spi) +{ + struct spi_flash *flash = NULL; + uint32_t flcomp; + + flash = malloc(sizeof(*flash)); + if (!flash) { + printk(BIOS_WARNING, "SF: Failed to allocate memory\n"); + return NULL; + } + + flash->spi = spi; + flash->name = "Opaque HW-sequencing"; + + flash->write = ich_hwseq_write; + flash->erase = ich_hwseq_erase; + flash->read = ich_hwseq_read; + ich_hwseq_set_addr (0); + switch ((cntlr.hsfs >> 3) & 3) + { + case 0: + flash->sector_size = 256; + break; + case 1: + flash->sector_size = 4096; + break; + case 2: + flash->sector_size = 8192; + break; + case 3: + flash->sector_size = 65536; + break; + } + + writel_ (0x1000, &cntlr.ich9_spi->fdoc); + flcomp = readl_(&cntlr.ich9_spi->fdod); + + flash->size = 1 << (19 + (flcomp & 7)); + + if ((cntlr.hsfs & HSFS_FDV) && ((cntlr.flmap0 >> 8) & 3)) + flash->size += 1 << (19 + ((flcomp >> 3) & 7)); + printk (BIOS_DEBUG, "flash size 0x%x bytes\n", flash->size); + + return flash; +} diff --git a/src/southbridge/intel/ibexpeak/spi.c b/src/southbridge/intel/ibexpeak/spi.c index e263b7f5f5..7080fe147d 100644 --- a/src/southbridge/intel/ibexpeak/spi.c +++ b/src/southbridge/intel/ibexpeak/spi.c @@ -1,5 +1,7 @@ /* * Copyright (c) 2011 The Chromium OS Authors. + * Copyright (C) 2009, 2010 Carl-Daniel Hailfinger + * Copyright (C) 2011 Stefan Tauner * * See file CREDITS for list of people who contributed to this * project. @@ -28,11 +30,20 @@ #include <arch/io.h> #include <console/console.h> #include <device/pci_ids.h> +#include <device/pci.h> +#include <spi_flash.h> #include <spi-generic.h> +#include "pch.h" #define min(a, b) ((a)<(b)?(a):(b)) +#define HSFC_FCYCLE_OFF 1 /* 1-2: FLASH Cycle */ +#define HSFC_FCYCLE (0x3 << HSFC_FCYCLE_OFF) +#define HSFC_FDBC_OFF 8 /* 8-13: Flash Data Byte Count */ +#define HSFC_FDBC (0x3f << HSFC_FDBC_OFF) + + #ifdef __SMM__ #include <arch/pci_mmio_cfg.h> #define pci_read_config_byte(dev, reg, targ)\ @@ -64,6 +75,9 @@ pci_write_config32(dev, reg, val) #endif /* !__SMM__ */ +static int spi_is_multichip(void); +static struct spi_flash *spi_flash_hwseq(struct spi_slave *spi); + typedef struct spi_slave ich_spi_slave; static int ichspi_lock = 0; @@ -115,7 +129,11 @@ typedef struct ich9_spi_regs { typedef struct ich_spi_controller { int locked; + int revision; + uint32_t flmap0; + uint32_t hsfs; + ich9_spi_regs *ich9_spi; uint8_t *opmenu; int menubytes; uint16_t *preop; @@ -299,6 +317,10 @@ struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs, slave->bus = bus; slave->cs = cs; + if (cntlr.revision == 9) { + slave->force_programmer_specific = spi_is_multichip (); + slave->programmer_specific_probe = spi_flash_hwseq; + } return slave; } @@ -357,6 +379,7 @@ void spi_init(void) pci_read_config_dword(dev, 0xf0, &rcba); /* Bits 31-14 are the base address, 13-1 are reserved, 0 is enable. */ rcrb = (uint8_t *)(rcba & 0xffffc000); + cntlr.revision = ich_version; switch (ich_version) { case 7: { @@ -382,7 +405,11 @@ void spi_init(void) const uint16_t ich9_spibar_offset = 0x3800; ich9_spi_regs *ich9_spi = (ich9_spi_regs *)(rcrb + ich9_spibar_offset); - ichspi_lock = readw_(&ich9_spi->hsfs) & HSFS_FLOCKDN; + uint16_t hsfs; + cntlr.ich9_spi = ich9_spi; + hsfs = readw_(&ich9_spi->hsfs); + ichspi_lock = hsfs & HSFS_FLOCKDN; + cntlr.hsfs = hsfs; cntlr.opmenu = ich9_spi->opmenu; cntlr.menubytes = sizeof(ich9_spi->opmenu); cntlr.optype = &ich9_spi->optype; @@ -393,6 +420,12 @@ void spi_init(void) cntlr.control = (uint16_t *)ich9_spi->ssfc; cntlr.bbar = &ich9_spi->bbar; cntlr.preop = &ich9_spi->preop; + + if (cntlr.hsfs & HSFS_FDV) + { + writel_ (4, &ich9_spi->fdoc); + cntlr.flmap0 = readl_(&ich9_spi->fdod); + } break; } default: @@ -592,6 +625,15 @@ static int ich_status_poll(u16 bitmask, int wait_til_set) return -1; } +static int spi_is_multichip (void) +{ + if (cntlr.revision != 9) + return 0; + if (!(cntlr.hsfs & HSFS_FDV)) + return 0; + return !!((cntlr.flmap0 >> 8) & 3); +} + int spi_xfer(struct spi_slave *slave, const void *dout, unsigned int bitsout, void *din, unsigned int bitsin) { @@ -744,3 +786,282 @@ int spi_xfer(struct spi_slave *slave, const void *dout, return 0; } + +/* Sets FLA in FADDR to (addr & 0x01FFFFFF) without touching other bits. */ +static void ich_hwseq_set_addr(uint32_t addr) +{ + uint32_t addr_old = readl_(&cntlr.ich9_spi->faddr) & ~0x01FFFFFF; + writel_((addr & 0x01FFFFFF) | addr_old, &cntlr.ich9_spi->faddr); +} + +/* Polls for Cycle Done Status, Flash Cycle Error or timeout in 8 us intervals. + Resets all error flags in HSFS. + Returns 0 if the cycle completes successfully without errors within + timeout us, 1 on errors. */ +static int ich_hwseq_wait_for_cycle_complete(unsigned int timeout, + unsigned int len) +{ + uint16_t hsfs; + uint32_t addr; + + timeout /= 8; /* scale timeout duration to counter */ + while ((((hsfs = readw_(&cntlr.ich9_spi->hsfs)) & + (HSFS_FDONE | HSFS_FCERR)) == 0) && + --timeout) { + udelay(8); + } + writew_(readw_(&cntlr.ich9_spi->hsfs), &cntlr.ich9_spi->hsfs); + + if (!timeout) { + uint16_t hsfc; + addr = readl_(&cntlr.ich9_spi->faddr) & 0x01FFFFFF; + hsfc = readw_(&cntlr.ich9_spi->hsfc); + printk(BIOS_ERR, "Transaction timeout between offset 0x%08x and " + "0x%08x (= 0x%08x + %d) HSFC=%x HSFS=%x!\n", + addr, addr + len - 1, addr, len - 1, + hsfc, hsfs); + return 1; + } + + if (hsfs & HSFS_FCERR) { + uint16_t hsfc; + addr = readl_(&cntlr.ich9_spi->faddr) & 0x01FFFFFF; + hsfc = readw_(&cntlr.ich9_spi->hsfc); + printk(BIOS_ERR, "Transaction error between offset 0x%08x and " + "0x%08x (= 0x%08x + %d) HSFC=%x HSFS=%x!\n", + addr, addr + len - 1, addr, len - 1, + hsfc, hsfs); + return 1; + } + return 0; +} + + +static int ich_hwseq_erase(struct spi_flash *flash, u32 offset, size_t len) +{ + u32 start, end, erase_size; + int ret; + uint16_t hsfc; + uint16_t timeout = 1000 * 60; + + erase_size = flash->sector_size; + if (offset % erase_size || len % erase_size) { + printk(BIOS_ERR, "SF: Erase offset/length not multiple of erase size\n"); + return -1; + } + + flash->spi->rw = SPI_WRITE_FLAG; + ret = spi_claim_bus(flash->spi); + if (ret) { + printk(BIOS_ERR, "SF: Unable to claim SPI bus\n"); + return ret; + } + + start = offset; + end = start + len; + + while (offset < end) { + /* make sure FDONE, FCERR, AEL are cleared by writing 1 to them */ + writew_(readw_(&cntlr.ich9_spi->hsfs), &cntlr.ich9_spi->hsfs); + + ich_hwseq_set_addr(offset); + + offset += erase_size; + + hsfc = readw_(&cntlr.ich9_spi->hsfc); + hsfc &= ~HSFC_FCYCLE; /* clear operation */ + hsfc |= (0x3 << HSFC_FCYCLE_OFF); /* set erase operation */ + hsfc |= HSFC_FGO; /* start */ + writew_(hsfc, &cntlr.ich9_spi->hsfc); + if (ich_hwseq_wait_for_cycle_complete(timeout, len)) + { + printk(BIOS_ERR, "SF: Erase failed at %x\n", offset - erase_size); + ret = -1; + goto out; + } + } + + printk(BIOS_DEBUG, "SF: Successfully erased %zu bytes @ %#x\n", len, start); + +out: + spi_release_bus(flash->spi); + return ret; +} + +static void ich_read_data(uint8_t *data, int len) +{ + int i; + uint32_t temp32 = 0; + + for (i = 0; i < len; i++) { + if ((i % 4) == 0) + temp32 = readl_(cntlr.data + i); + + data[i] = (temp32 >> ((i % 4) * 8)) & 0xff; + } +} + +static int ich_hwseq_read(struct spi_flash *flash, + u32 addr, size_t len, void *buf) +{ + uint16_t hsfc; + uint16_t timeout = 100 * 60; + uint8_t block_len; + + if (addr + len > flash->size) { + printk (BIOS_ERR, + "Attempt to read %x-%x which is out of chip\n", + (unsigned) addr, + (unsigned) addr+(unsigned) len); + return -1; + } + + /* clear FDONE, FCERR, AEL by writing 1 to them (if they are set) */ + writew_(readw_(&cntlr.ich9_spi->hsfs), &cntlr.ich9_spi->hsfs); + + while (len > 0) { + block_len = min(len, cntlr.databytes); + if (block_len > (~addr & 0xff)) + block_len = (~addr & 0xff) + 1; + ich_hwseq_set_addr(addr); + hsfc = readw_(&cntlr.ich9_spi->hsfc); + hsfc &= ~HSFC_FCYCLE; /* set read operation */ + hsfc &= ~HSFC_FDBC; /* clear byte count */ + /* set byte count */ + hsfc |= (((block_len - 1) << HSFC_FDBC_OFF) & HSFC_FDBC); + hsfc |= HSFC_FGO; /* start */ + writew_(hsfc, &cntlr.ich9_spi->hsfc); + + if (ich_hwseq_wait_for_cycle_complete(timeout, block_len)) + return 1; + ich_read_data(buf, block_len); + addr += block_len; + buf += block_len; + len -= block_len; + } + return 0; +} + +/* Fill len bytes from the data array into the fdata/spid registers. + * + * Note that using len > flash->pgm->spi.max_data_write will trash the registers + * following the data registers. + */ +static void ich_fill_data(const uint8_t *data, int len) +{ + uint32_t temp32 = 0; + int i; + + if (len <= 0) + return; + + for (i = 0; i < len; i++) { + if ((i % 4) == 0) + temp32 = 0; + + temp32 |= ((uint32_t) data[i]) << ((i % 4) * 8); + + if ((i % 4) == 3) /* 32 bits are full, write them to regs. */ + writel_(temp32, cntlr.data + (i - (i % 4))); + } + i--; + if ((i % 4) != 3) /* Write remaining data to regs. */ + writel_(temp32, cntlr.data + (i - (i % 4))); +} + +static int ich_hwseq_write(struct spi_flash *flash, + u32 addr, size_t len, const void *buf) +{ + uint16_t hsfc; + uint16_t timeout = 100 * 60; + uint8_t block_len; + uint32_t start = addr; + + if (addr + len > flash->size) { + printk (BIOS_ERR, + "Attempt to write 0x%x-0x%x which is out of chip\n", + (unsigned)addr, (unsigned) (addr+len)); + return -1; + } + + /* clear FDONE, FCERR, AEL by writing 1 to them (if they are set) */ + writew_(readw_(&cntlr.ich9_spi->hsfs), &cntlr.ich9_spi->hsfs); + + while (len > 0) { + block_len = min(len, cntlr.databytes); + if (block_len > (~addr & 0xff)) + block_len = (~addr & 0xff) + 1; + + ich_hwseq_set_addr(addr); + + ich_fill_data(buf, block_len); + hsfc = readw_(&cntlr.ich9_spi->hsfc); + hsfc &= ~HSFC_FCYCLE; /* clear operation */ + hsfc |= (0x2 << HSFC_FCYCLE_OFF); /* set write operation */ + hsfc &= ~HSFC_FDBC; /* clear byte count */ + /* set byte count */ + hsfc |= (((block_len - 1) << HSFC_FDBC_OFF) & HSFC_FDBC); + hsfc |= HSFC_FGO; /* start */ + writew_(hsfc, &cntlr.ich9_spi->hsfc); + + if (ich_hwseq_wait_for_cycle_complete(timeout, block_len)) + { + printk (BIOS_ERR, "SF: write failure at %x\n", + addr); + return -1; + } + addr += block_len; + buf += block_len; + len -= block_len; + } + printk(BIOS_DEBUG, "SF: Successfully written %u bytes @ %#x\n", + (unsigned) (addr - start), start); + return 0; +} + + +static struct spi_flash *spi_flash_hwseq(struct spi_slave *spi) +{ + struct spi_flash *flash = NULL; + uint32_t flcomp; + + flash = malloc(sizeof(*flash)); + if (!flash) { + printk(BIOS_WARNING, "SF: Failed to allocate memory\n"); + return NULL; + } + + flash->spi = spi; + flash->name = "Opaque HW-sequencing"; + + flash->write = ich_hwseq_write; + flash->erase = ich_hwseq_erase; + flash->read = ich_hwseq_read; + ich_hwseq_set_addr (0); + switch ((cntlr.hsfs >> 3) & 3) + { + case 0: + flash->sector_size = 256; + break; + case 1: + flash->sector_size = 4096; + break; + case 2: + flash->sector_size = 8192; + break; + case 3: + flash->sector_size = 65536; + break; + } + + writel_ (0x1000, &cntlr.ich9_spi->fdoc); + flcomp = readl_(&cntlr.ich9_spi->fdod); + + flash->size = 1 << (19 + (flcomp & 7)); + + if ((cntlr.hsfs & HSFS_FDV) && ((cntlr.flmap0 >> 8) & 3)) + flash->size += 1 << (19 + ((flcomp >> 3) & 7)); + printk (BIOS_DEBUG, "flash size 0x%x bytes\n", flash->size); + + return flash; +} |