diff options
Diffstat (limited to 'drivers/bcma')
-rw-r--r-- | drivers/bcma/driver_mips.c | 62 | ||||
-rw-r--r-- | drivers/bcma/host_soc.c | 4 | ||||
-rw-r--r-- | drivers/bcma/scan.c | 11 |
3 files changed, 73 insertions, 4 deletions
diff --git a/drivers/bcma/driver_mips.c b/drivers/bcma/driver_mips.c index 11115bbe115c..004d6aa671ce 100644 --- a/drivers/bcma/driver_mips.c +++ b/drivers/bcma/driver_mips.c @@ -21,6 +21,14 @@ #include <linux/serial_reg.h> #include <linux/time.h> +enum bcma_boot_dev { + BCMA_BOOT_DEV_UNK = 0, + BCMA_BOOT_DEV_ROM, + BCMA_BOOT_DEV_PARALLEL, + BCMA_BOOT_DEV_SERIAL, + BCMA_BOOT_DEV_NAND, +}; + static const char * const part_probes[] = { "bcm47xxpart", NULL }; static struct physmap_flash_data bcma_pflash_data = { @@ -229,11 +237,51 @@ u32 bcma_cpu_clock(struct bcma_drv_mips *mcore) } EXPORT_SYMBOL(bcma_cpu_clock); +static enum bcma_boot_dev bcma_boot_dev(struct bcma_bus *bus) +{ + struct bcma_drv_cc *cc = &bus->drv_cc; + u8 cc_rev = cc->core->id.rev; + + if (cc_rev == 42) { + struct bcma_device *core; + + core = bcma_find_core(bus, BCMA_CORE_NS_ROM); + if (core) { + switch (bcma_aread32(core, BCMA_IOST) & + BCMA_NS_ROM_IOST_BOOT_DEV_MASK) { + case BCMA_NS_ROM_IOST_BOOT_DEV_NOR: + return BCMA_BOOT_DEV_SERIAL; + case BCMA_NS_ROM_IOST_BOOT_DEV_NAND: + return BCMA_BOOT_DEV_NAND; + case BCMA_NS_ROM_IOST_BOOT_DEV_ROM: + default: + return BCMA_BOOT_DEV_ROM; + } + } + } else { + if (cc_rev == 38) { + if (cc->status & BCMA_CC_CHIPST_5357_NAND_BOOT) + return BCMA_BOOT_DEV_NAND; + else if (cc->status & BIT(5)) + return BCMA_BOOT_DEV_ROM; + } + + if ((cc->capabilities & BCMA_CC_CAP_FLASHT) == + BCMA_CC_FLASHT_PARA) + return BCMA_BOOT_DEV_PARALLEL; + else + return BCMA_BOOT_DEV_SERIAL; + } + + return BCMA_BOOT_DEV_SERIAL; +} + static void bcma_core_mips_flash_detect(struct bcma_drv_mips *mcore) { struct bcma_bus *bus = mcore->core->bus; struct bcma_drv_cc *cc = &bus->drv_cc; struct bcma_pflash *pflash = &cc->pflash; + enum bcma_boot_dev boot_dev; switch (cc->capabilities & BCMA_CC_CAP_FLASHT) { case BCMA_CC_FLASHT_STSER: @@ -269,6 +317,20 @@ static void bcma_core_mips_flash_detect(struct bcma_drv_mips *mcore) bcma_nflash_init(cc); } } + + /* Determine flash type this SoC boots from */ + boot_dev = bcma_boot_dev(bus); + switch (boot_dev) { + case BCMA_BOOT_DEV_PARALLEL: + case BCMA_BOOT_DEV_SERIAL: + /* TODO: Init NVRAM using BCMA_SOC_FLASH2 window */ + break; + case BCMA_BOOT_DEV_NAND: + /* TODO: Init NVRAM using BCMA_SOC_FLASH1 window */ + break; + default: + break; + } } void bcma_core_mips_early_init(struct bcma_drv_mips *mcore) diff --git a/drivers/bcma/host_soc.c b/drivers/bcma/host_soc.c index 3475e600011a..1edd7e064621 100644 --- a/drivers/bcma/host_soc.c +++ b/drivers/bcma/host_soc.c @@ -134,12 +134,16 @@ static void bcma_host_soc_block_write(struct bcma_device *core, static u32 bcma_host_soc_aread32(struct bcma_device *core, u16 offset) { + if (WARN_ONCE(!core->io_wrap, "Accessed core has no wrapper/agent\n")) + return ~0; return readl(core->io_wrap + offset); } static void bcma_host_soc_awrite32(struct bcma_device *core, u16 offset, u32 value) { + if (WARN_ONCE(!core->io_wrap, "Accessed core has no wrapper/agent\n")) + return; writel(value, core->io_wrap + offset); } diff --git a/drivers/bcma/scan.c b/drivers/bcma/scan.c index b4764c6bcf17..e9bd77249a4c 100644 --- a/drivers/bcma/scan.c +++ b/drivers/bcma/scan.c @@ -421,10 +421,13 @@ static int bcma_get_next_core(struct bcma_bus *bus, u32 __iomem **eromptr, core->io_addr = ioremap_nocache(core->addr, BCMA_CORE_SIZE); if (!core->io_addr) return -ENOMEM; - core->io_wrap = ioremap_nocache(core->wrap, BCMA_CORE_SIZE); - if (!core->io_wrap) { - iounmap(core->io_addr); - return -ENOMEM; + if (core->wrap) { + core->io_wrap = ioremap_nocache(core->wrap, + BCMA_CORE_SIZE); + if (!core->io_wrap) { + iounmap(core->io_addr); + return -ENOMEM; + } } } return 0; |