From a47fb21bf8c4966ecf91bb46d1f358ca26525490 Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Sun, 18 Nov 2012 21:27:00 +0000 Subject: brcm47xx: add support for kernel 3.6 This is based on the patch by Peter Wagner. git-svn-id: svn://svn.openwrt.org/openwrt/trunk@34252 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- .../060-ssb-add-serial-flash-driver.patch | 527 +++++++++++++++++++++ 1 file changed, 527 insertions(+) create mode 100644 target/linux/brcm47xx/patches-3.6/060-ssb-add-serial-flash-driver.patch (limited to 'target/linux/brcm47xx/patches-3.6/060-ssb-add-serial-flash-driver.patch') diff --git a/target/linux/brcm47xx/patches-3.6/060-ssb-add-serial-flash-driver.patch b/target/linux/brcm47xx/patches-3.6/060-ssb-add-serial-flash-driver.patch new file mode 100644 index 0000000000..d65fc0a5b4 --- /dev/null +++ b/target/linux/brcm47xx/patches-3.6/060-ssb-add-serial-flash-driver.patch @@ -0,0 +1,527 @@ +--- a/drivers/ssb/Kconfig ++++ b/drivers/ssb/Kconfig +@@ -143,6 +143,11 @@ config SSB_EMBEDDED + depends on SSB_DRIVER_MIPS + default y + ++config SSB_SFLASH ++ bool ++ depends on SSB_DRIVER_MIPS ++ default y ++ + config SSB_DRIVER_EXTIF + bool "SSB Broadcom EXTIF core driver" + depends on SSB_DRIVER_MIPS +--- a/drivers/ssb/Makefile ++++ b/drivers/ssb/Makefile +@@ -11,6 +11,7 @@ ssb-$(CONFIG_SSB_SDIOHOST) += sdio.o + # built-in drivers + ssb-y += driver_chipcommon.o + ssb-y += driver_chipcommon_pmu.o ++ssb-$(CONFIG_SSB_SFLASH) += driver_chipcommon_sflash.o + ssb-$(CONFIG_SSB_DRIVER_MIPS) += driver_mipscore.o + ssb-$(CONFIG_SSB_DRIVER_EXTIF) += driver_extif.o + ssb-$(CONFIG_SSB_DRIVER_PCICORE) += driver_pcicore.o +--- /dev/null ++++ b/drivers/ssb/driver_chipcommon_sflash.c +@@ -0,0 +1,395 @@ ++/* ++ * Broadcom specific AMBA ++ * ChipCommon serial flash interface ++ * Copyright 2011, Jonas Gorski ++ * Copyright 2011, 2012, Hauke Mehrtens ++ * Copyright 2010, Broadcom Corporation ++ * ++ * Licensed under the GNU/GPL. See COPYING for details. ++ */ ++ ++#include ++#include ++#include ++#include ++ ++#include "ssb_private.h" ++ ++#define NUM_RETRIES 3 ++ ++static struct resource ssb_sflash_resource = { ++ .name = "ssb_sflash", ++ .start = SSB_FLASH2, ++ .end = 0, ++ .flags = IORESOURCE_MEM | IORESOURCE_READONLY, ++}; ++ ++struct platform_device ssb_sflash_dev = { ++ .name = "bcm47xx-sflash", ++ .resource = &ssb_sflash_resource, ++ .num_resources = 1, ++}; ++ ++struct ssb_sflash_tbl_e { ++ char *name; ++ u32 id; ++ u32 blocksize; ++ u16 numblocks; ++}; ++ ++static const struct ssb_sflash_tbl_e ssb_sflash_st_tbl[] = { ++ { "M25P20", 0x11, 0x10000, 4, }, ++ { "M25P40", 0x12, 0x10000, 8, }, ++ ++ { "M25P16", 0x14, 0x10000, 32, }, ++ { "M25P32", 0x14, 0x10000, 64, }, ++ { "M25P64", 0x16, 0x10000, 128, }, ++ { "M25FL128", 0x17, 0x10000, 256, }, ++ { 0 }, ++}; ++ ++static const struct ssb_sflash_tbl_e ssb_sflash_sst_tbl[] = { ++ { "SST25WF512", 1, 0x1000, 16, }, ++ { "SST25VF512", 0x48, 0x1000, 16, }, ++ { "SST25WF010", 2, 0x1000, 32, }, ++ { "SST25VF010", 0x49, 0x1000, 32, }, ++ { "SST25WF020", 3, 0x1000, 64, }, ++ { "SST25VF020", 0x43, 0x1000, 64, }, ++ { "SST25WF040", 4, 0x1000, 128, }, ++ { "SST25VF040", 0x44, 0x1000, 128, }, ++ { "SST25VF040B", 0x8d, 0x1000, 128, }, ++ { "SST25WF080", 5, 0x1000, 256, }, ++ { "SST25VF080B", 0x8e, 0x1000, 256, }, ++ { "SST25VF016", 0x41, 0x1000, 512, }, ++ { "SST25VF032", 0x4a, 0x1000, 1024, }, ++ { "SST25VF064", 0x4b, 0x1000, 2048, }, ++ { 0 }, ++}; ++ ++static const struct ssb_sflash_tbl_e ssb_sflash_at_tbl[] = { ++ { "AT45DB011", 0xc, 256, 512, }, ++ { "AT45DB021", 0x14, 256, 1024, }, ++ { "AT45DB041", 0x1c, 256, 2048, }, ++ { "AT45DB081", 0x24, 256, 4096, }, ++ { "AT45DB161", 0x2c, 512, 4096, }, ++ { "AT45DB321", 0x34, 512, 8192, }, ++ { "AT45DB642", 0x3c, 1024, 8192, }, ++ { 0 }, ++}; ++ ++static void ssb_sflash_cmd(struct ssb_chipcommon *chipco, u32 opcode) ++{ ++ int i; ++ chipco_write32(chipco, SSB_CHIPCO_FLASHCTL, ++ SSB_CHIPCO_FLASHCTL_START | opcode); ++ for (i = 0; i < 1000; i++) { ++ if (!(chipco_read32(chipco, SSB_CHIPCO_FLASHCTL) & ++ SSB_CHIPCO_FLASHCTL_BUSY)) ++ return; ++ cpu_relax(); ++ } ++ pr_err("SFLASH control command failed (timeout)!\n"); ++} ++ ++static void ssb_sflash_write_u8(struct ssb_chipcommon *chipco, u32 offset, u8 byte) ++{ ++ chipco_write32(chipco, SSB_CHIPCO_FLASHADDR, offset); ++ chipco_write32(chipco, SSB_CHIPCO_FLASHDATA, byte); ++} ++ ++/* Read len bytes starting at offset into buf. Returns number of bytes read. */ ++static int ssb_sflash_read(struct bcm47xx_sflash *dev, u32 offset, u32 len, u8 *buf) ++{ ++ u8 *from, *to; ++ u32 cnt, i; ++ struct ssb_chipcommon *chipco = dev->scc; ++ ++ if (!len) ++ return 0; ++ ++ if ((offset + len) > chipco->sflash.size) ++ return -EINVAL; ++ ++ if ((len >= 4) && (offset & 3)) ++ cnt = 4 - (offset & 3); ++ else if ((len >= 4) && ((u32)buf & 3)) ++ cnt = 4 - ((u32)buf & 3); ++ else ++ cnt = len; ++ ++ from = (u8 *)KSEG0ADDR(SSB_FLASH2 + offset); ++ ++ to = (u8 *)buf; ++ ++ if (cnt < 4) { ++ for (i = 0; i < cnt; i++) { ++ *to = readb(from); ++ from++; ++ to++; ++ } ++ return cnt; ++ } ++ ++ while (cnt >= 4) { ++ *(u32 *)to = readl(from); ++ from += 4; ++ to += 4; ++ cnt -= 4; ++ } ++ ++ return len - cnt; ++} ++ ++/* Poll for command completion. Returns zero when complete. */ ++static int ssb_sflash_poll(struct bcm47xx_sflash *dev, u32 offset) ++{ ++ struct ssb_chipcommon *chipco = dev->scc; ++ ++ if (offset >= chipco->sflash.size) ++ return -22; ++ ++ switch (chipco->capabilities & SSB_CHIPCO_CAP_FLASHT) { ++ case SSB_CHIPCO_FLASHT_STSER: ++ /* Check for ST Write In Progress bit */ ++ ssb_sflash_cmd(chipco, SSB_CHIPCO_FLASHCTL_ST_RDSR); ++ return chipco_read32(chipco, SSB_CHIPCO_FLASHDATA) ++ & SSB_CHIPCO_FLASHDATA_ST_WIP; ++ case SSB_CHIPCO_FLASHT_ATSER: ++ /* Check for Atmel Ready bit */ ++ ssb_sflash_cmd(chipco, SSB_CHIPCO_FLASHCTL_AT_STATUS); ++ return !(chipco_read32(chipco, SSB_CHIPCO_FLASHDATA) ++ & SSB_CHIPCO_FLASHDATA_AT_READY); ++ } ++ ++ return 0; ++} ++ ++ ++static int sflash_st_write(struct bcm47xx_sflash *dev, u32 offset, u32 len, ++ const u8 *buf) ++{ ++ int written = 1; ++ struct ssb_chipcommon *chipco = dev->scc; ++ ++ /* Enable writes */ ++ ssb_sflash_cmd(chipco, SSB_CHIPCO_FLASHCTL_ST_WREN); ++ ssb_sflash_write_u8(chipco, offset, *buf++); ++ /* Issue a page program with CSA bit set */ ++ ssb_sflash_cmd(chipco, SSB_CHIPCO_FLASHCTL_ST_CSA | SSB_CHIPCO_FLASHCTL_ST_PP); ++ offset++; ++ len--; ++ while (len > 0) { ++ if ((offset & 255) == 0) { ++ /* Page boundary, poll droping cs and return */ ++ chipco_write32(chipco, SSB_CHIPCO_FLASHCTL, 0); ++ udelay(1); ++ if (!ssb_sflash_poll(dev, offset)) { ++ /* Flash rejected command */ ++ return -EAGAIN; ++ } ++ return written; ++ } else { ++ /* Write single byte */ ++ ssb_sflash_cmd(chipco, ++ SSB_CHIPCO_FLASHCTL_ST_CSA | ++ *buf++); ++ } ++ written++; ++ offset++; ++ len--; ++ } ++ /* All done, drop cs & poll */ ++ chipco_write32(chipco, SSB_CHIPCO_FLASHCTL, 0); ++ udelay(1); ++ if (!ssb_sflash_poll(dev, offset)) { ++ /* Flash rejected command */ ++ return -EAGAIN; ++ } ++ return written; ++} ++ ++static int sflash_at_write(struct bcm47xx_sflash *dev, u32 offset, u32 len, ++ const u8 *buf) ++{ ++ struct ssb_chipcommon *chipco = dev->scc; ++ u32 page, byte, mask; ++ int ret = 0; ++ ++ mask = dev->blocksize - 1; ++ page = (offset & ~mask) << 1; ++ byte = offset & mask; ++ /* Read main memory page into buffer 1 */ ++ if (byte || (len < dev->blocksize)) { ++ int i = 100; ++ chipco_write32(chipco, SSB_CHIPCO_FLASHADDR, page); ++ ssb_sflash_cmd(chipco, SSB_CHIPCO_FLASHCTL_AT_BUF1_LOAD); ++ /* 250 us for AT45DB321B */ ++ while (i > 0 && ssb_sflash_poll(dev, offset)) { ++ udelay(10); ++ i--; ++ } ++ BUG_ON(!ssb_sflash_poll(dev, offset)); ++ } ++ /* Write into buffer 1 */ ++ for (ret = 0; (ret < (int)len) && (byte < dev->blocksize); ret++) { ++ ssb_sflash_write_u8(chipco, byte++, *buf++); ++ ssb_sflash_cmd(chipco, SSB_CHIPCO_FLASHCTL_AT_BUF1_WRITE); ++ } ++ /* Write buffer 1 into main memory page */ ++ chipco_write32(chipco, SSB_CHIPCO_FLASHADDR, page); ++ ssb_sflash_cmd(chipco, SSB_CHIPCO_FLASHCTL_AT_BUF1_PROGRAM); ++ ++ return ret; ++} ++ ++/* Write len bytes starting at offset into buf. Returns number of bytes ++ * written. Caller should poll for completion. ++ */ ++static int ssb_sflash_write(struct bcm47xx_sflash *dev, u32 offset, u32 len, ++ const u8 *buf) ++{ ++ int ret = 0, tries = NUM_RETRIES; ++ struct ssb_chipcommon *chipco = dev->scc; ++ ++ if (!len) ++ return 0; ++ ++ if ((offset + len) > chipco->sflash.size) ++ return -EINVAL; ++ ++ switch (chipco->capabilities & SSB_CHIPCO_CAP_FLASHT) { ++ case SSB_CHIPCO_FLASHT_STSER: ++ do { ++ ret = sflash_st_write(dev, offset, len, buf); ++ tries--; ++ } while (ret == -EAGAIN && tries > 0); ++ ++ if (ret == -EAGAIN && tries == 0) { ++ pr_info("ST Flash rejected write\n"); ++ ret = -EIO; ++ } ++ break; ++ case SSB_CHIPCO_FLASHT_ATSER: ++ ret = sflash_at_write(dev, offset, len, buf); ++ break; ++ } ++ ++ return ret; ++} ++ ++/* Erase a region. Returns number of bytes scheduled for erasure. ++ * Caller should poll for completion. ++ */ ++static int ssb_sflash_erase(struct bcm47xx_sflash *dev, u32 offset) ++{ ++ struct ssb_chipcommon *chipco = dev->scc; ++ ++ if (offset >= chipco->sflash.size) ++ return -EINVAL; ++ ++ switch (chipco->capabilities & SSB_CHIPCO_CAP_FLASHT) { ++ case SSB_CHIPCO_FLASHT_STSER: ++ ssb_sflash_cmd(chipco, SSB_CHIPCO_FLASHCTL_ST_WREN); ++ chipco_write32(chipco, SSB_CHIPCO_FLASHADDR, offset); ++ /* Newer flashes have "sub-sectors" which can be erased independently ++ * with a new command: ST_SSE. The ST_SE command erases 64KB just as ++ * before. ++ */ ++ if (dev->blocksize < (64 * 1024)) ++ ssb_sflash_cmd(chipco, SSB_CHIPCO_FLASHCTL_ST_SSE); ++ else ++ ssb_sflash_cmd(chipco, SSB_CHIPCO_FLASHCTL_ST_SE); ++ return dev->blocksize; ++ case SSB_CHIPCO_FLASHT_ATSER: ++ chipco_write32(chipco, SSB_CHIPCO_FLASHADDR, offset << 1); ++ ssb_sflash_cmd(chipco, SSB_CHIPCO_FLASHCTL_AT_PAGE_ERASE); ++ return dev->blocksize; ++ } ++ ++ return 0; ++} ++ ++/* Initialize serial flash achipcoess */ ++int ssb_sflash_init(struct ssb_chipcommon *chipco) ++{ ++ struct bcm47xx_sflash *sflash = &chipco->sflash; ++ const struct ssb_sflash_tbl_e *e; ++ u32 id, id2; ++ ++ switch (chipco->capabilities & SSB_CHIPCO_CAP_FLASHT) { ++ case SSB_CHIPCO_FLASHT_STSER: ++ ssb_sflash_cmd(chipco, SSB_CHIPCO_FLASHCTL_ST_DP); ++ ++ chipco_write32(chipco, SSB_CHIPCO_FLASHADDR, 0); ++ ssb_sflash_cmd(chipco, SSB_CHIPCO_FLASHCTL_ST_RES); ++ id = chipco_read32(chipco, SSB_CHIPCO_FLASHDATA); ++ ++ chipco_write32(chipco, SSB_CHIPCO_FLASHADDR, 1); ++ ssb_sflash_cmd(chipco, SSB_CHIPCO_FLASHCTL_ST_RES); ++ id2 = chipco_read32(chipco, SSB_CHIPCO_FLASHDATA); ++ ++ switch (id) { ++ case 0xbf: ++ for (e = ssb_sflash_sst_tbl; e->name; e++) { ++ if (e->id == id2) ++ break; ++ } ++ break; ++ case 0x13: ++ return -ENOTSUPP; ++ default: ++ for (e = ssb_sflash_st_tbl; e->name; e++) { ++ if (e->id == id) ++ break; ++ } ++ break; ++ } ++ if (!e->name) { ++ pr_err("Unsupported ST serial flash (id: 0x%X, id2: 0x%X)\n", id, id2); ++ return -ENOTSUPP; ++ } ++ ++ break; ++ case SSB_CHIPCO_FLASHT_ATSER: ++ ssb_sflash_cmd(chipco, SSB_CHIPCO_FLASHCTL_AT_STATUS); ++ id = chipco_read32(chipco, SSB_CHIPCO_FLASHDATA) & 0x3c; ++ ++ for (e = ssb_sflash_at_tbl; e->name; e++) { ++ if (e->id == id) ++ break; ++ } ++ if (!e->name) { ++ pr_err("Unsupported Atmel serial flash (id: 0x%X)\n", id); ++ return -ENOTSUPP; ++ } ++ ++ break; ++ default: ++ pr_err("Unsupported flash type\n"); ++ return -ENOTSUPP; ++ } ++ ++ sflash->window = SSB_FLASH2; ++ sflash->blocksize = e->blocksize; ++ sflash->numblocks = e->numblocks; ++ sflash->size = sflash->blocksize * sflash->numblocks; ++ sflash->present = true; ++ sflash->read = ssb_sflash_read; ++ sflash->poll = ssb_sflash_poll; ++ sflash->write = ssb_sflash_write; ++ sflash->erase = ssb_sflash_erase; ++ sflash->type = BCM47XX_SFLASH_SSB; ++ sflash->scc = chipco; ++ ++ pr_info("Found %s serial flash (size: %dKiB, blocksize: 0x%X, blocks: %d)\n", ++ e->name, sflash->size / 1024, sflash->blocksize, ++ sflash->numblocks); ++ ++ /* Prepare platform device, but don't register it yet. It's too early, ++ * malloc (required by device_private_init) is not available yet. */ ++ ssb_sflash_dev.resource[0].end = ssb_sflash_dev.resource[0].start + ++ sflash->size; ++ ssb_sflash_dev.dev.platform_data = sflash; ++ ++ return 0; ++} +--- a/drivers/ssb/driver_mipscore.c ++++ b/drivers/ssb/driver_mipscore.c +@@ -203,7 +203,8 @@ static void ssb_mips_flash_detect(struct + switch (bus->chipco.capabilities & SSB_CHIPCO_CAP_FLASHT) { + case SSB_CHIPCO_FLASHT_STSER: + case SSB_CHIPCO_FLASHT_ATSER: +- pr_err("Serial flash not supported\n"); ++ pr_debug("Found serial flash\n"); ++ ssb_sflash_init(&bus->chipco); + break; + case SSB_CHIPCO_FLASHT_PARA: + pr_debug("Found parallel flash\n"); +--- a/drivers/ssb/main.c ++++ b/drivers/ssb/main.c +@@ -18,6 +18,7 @@ + #include + #include + #include ++#include + #include + #include + +@@ -534,6 +535,15 @@ static int ssb_devices_register(struct s + dev_idx++; + } + ++#ifdef CONFIG_SSB_SFLASH ++ if (bus->chipco.sflash.present) { ++ err = platform_device_register(&ssb_sflash_dev); ++ if (err) ++ ssb_printk(KERN_ERR PFX ++ "Error registering serial flash\n"); ++ } ++#endif ++ + return 0; + error: + /* Unwind the already registered devices. */ +--- a/drivers/ssb/ssb_private.h ++++ b/drivers/ssb/ssb_private.h +@@ -211,4 +211,16 @@ static inline void b43_pci_ssb_bridge_ex + extern u32 ssb_pmu_get_cpu_clock(struct ssb_chipcommon *cc); + extern u32 ssb_pmu_get_controlclock(struct ssb_chipcommon *cc); + ++#ifdef CONFIG_SSB_SFLASH ++/* driver_chipcommon_sflash.c */ ++int ssb_sflash_init(struct ssb_chipcommon *chipco); ++extern struct platform_device ssb_sflash_dev; ++#else ++static inline int ssb_sflash_init(struct ssb_chipcommon *chipco) ++{ ++ pr_err("Serial flash not supported\n"); ++ return 0; ++} ++#endif /* CONFIG_SSB_SFLASH */ ++ + #endif /* LINUX_SSB_PRIVATE_H_ */ +--- a/include/linux/ssb/ssb_driver_chipcommon.h ++++ b/include/linux/ssb/ssb_driver_chipcommon.h +@@ -13,6 +13,8 @@ + * Licensed under the GPL version 2. See COPYING for details. + */ + ++#include ++ + /** ChipCommon core registers. **/ + + #define SSB_CHIPCO_CHIPID 0x0000 +@@ -121,6 +123,17 @@ + #define SSB_CHIPCO_FLASHCTL_BUSY SSB_CHIPCO_FLASHCTL_START + #define SSB_CHIPCO_FLASHADDR 0x0044 + #define SSB_CHIPCO_FLASHDATA 0x0048 ++/* Status register bits for ST flashes */ ++#define SSB_CHIPCO_FLASHDATA_ST_WIP 0x01 /* Write In Progress */ ++#define SSB_CHIPCO_FLASHDATA_ST_WEL 0x02 /* Write Enable Latch */ ++#define SSB_CHIPCO_FLASHDATA_ST_BP_MASK 0x1c /* Block Protect */ ++#define SSB_CHIPCO_FLASHDATA_ST_BP_SHIFT 2 ++#define SSB_CHIPCO_FLASHDATA_ST_SRWD 0x80 /* Status Register Write Disable */ ++/* Status register bits for Atmel flashes */ ++#define SSB_CHIPCO_FLASHDATA_AT_READY 0x80 ++#define SSB_CHIPCO_FLASHDATA_AT_MISMATCH 0x40 ++#define SSB_CHIPCO_FLASHDATA_AT_ID_MASK 0x38 ++#define SSB_CHIPCO_FLASHDATA_AT_ID_SHIFT 3 + #define SSB_CHIPCO_BCAST_ADDR 0x0050 + #define SSB_CHIPCO_BCAST_DATA 0x0054 + #define SSB_CHIPCO_GPIOPULLUP 0x0058 /* Rev >= 20 only */ +@@ -503,7 +516,7 @@ + #define SSB_CHIPCO_FLASHCTL_ST_PP 0x0302 /* Page Program */ + #define SSB_CHIPCO_FLASHCTL_ST_SE 0x02D8 /* Sector Erase */ + #define SSB_CHIPCO_FLASHCTL_ST_BE 0x00C7 /* Bulk Erase */ +-#define SSB_CHIPCO_FLASHCTL_ST_DP 0x00B9 /* Deep Power-down */ ++#define SSB_CHIPCO_FLASHCTL_ST_DP 0x00D9 /* Deep Power-down */ + #define SSB_CHIPCO_FLASHCTL_ST_RES 0x03AB /* Read Electronic Signature */ + #define SSB_CHIPCO_FLASHCTL_ST_CSA 0x1000 /* Keep chip select asserted */ + #define SSB_CHIPCO_FLASHCTL_ST_SSE 0x0220 /* Sub-sector Erase */ +@@ -591,6 +604,9 @@ struct ssb_chipcommon { + /* Fast Powerup Delay constant */ + u16 fast_pwrup_delay; + struct ssb_chipcommon_pmu pmu; ++#ifdef CONFIG_SSB_SFLASH ++ struct bcm47xx_sflash sflash; ++#endif + }; + + static inline bool ssb_chipco_available(struct ssb_chipcommon *cc) -- cgit v1.2.3