From 14f0acdc28029cf1766e115ab73231adcdbe1923 Mon Sep 17 00:00:00 2001 From: hauke Date: Thu, 3 May 2012 20:18:41 +0000 Subject: brcm47xx: add support for kernel 3.3 git-svn-id: svn://svn.openwrt.org/openwrt/trunk@31573 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- ...021-bcma-add-serial-flash-support-to-bcma.patch | 505 +++++++++++++++++++++ 1 file changed, 505 insertions(+) create mode 100644 target/linux/brcm47xx/patches-3.3/021-bcma-add-serial-flash-support-to-bcma.patch (limited to 'target/linux/brcm47xx/patches-3.3/021-bcma-add-serial-flash-support-to-bcma.patch') diff --git a/target/linux/brcm47xx/patches-3.3/021-bcma-add-serial-flash-support-to-bcma.patch b/target/linux/brcm47xx/patches-3.3/021-bcma-add-serial-flash-support-to-bcma.patch new file mode 100644 index 000000000..2de4ba0f5 --- /dev/null +++ b/target/linux/brcm47xx/patches-3.3/021-bcma-add-serial-flash-support-to-bcma.patch @@ -0,0 +1,505 @@ +--- a/drivers/bcma/Kconfig ++++ b/drivers/bcma/Kconfig +@@ -38,6 +38,11 @@ config BCMA_HOST_SOC + bool + depends on BCMA_DRIVER_MIPS + ++config BCMA_SFLASH ++ bool ++ depends on BCMA_DRIVER_MIPS ++ default y ++ + config BCMA_DRIVER_MIPS + bool "BCMA Broadcom MIPS core driver" + depends on BCMA && MIPS +--- a/drivers/bcma/Makefile ++++ b/drivers/bcma/Makefile +@@ -1,5 +1,6 @@ + bcma-y += main.o scan.o core.o sprom.o + bcma-y += driver_chipcommon.o driver_chipcommon_pmu.o ++bcma-$(CONFIG_BCMA_SFLASH) += driver_chipcommon_sflash.o + bcma-y += driver_pci.o + bcma-$(CONFIG_BCMA_DRIVER_PCI_HOSTMODE) += driver_pci_host.o + bcma-$(CONFIG_BCMA_DRIVER_MIPS) += driver_mips.o +--- a/drivers/bcma/bcma_private.h ++++ b/drivers/bcma/bcma_private.h +@@ -42,6 +42,11 @@ void bcma_chipco_serial_init(struct bcma + u32 bcma_pmu_alp_clock(struct bcma_drv_cc *cc); + u32 bcma_pmu_get_clockcpu(struct bcma_drv_cc *cc); + ++#ifdef CONFIG_BCMA_SFLASH ++/* driver_chipcommon_sflash.c */ ++int bcma_sflash_init(struct bcma_drv_cc *cc); ++#endif /* CONFIG_BCMA_SFLASH */ ++ + #ifdef CONFIG_BCMA_HOST_PCI + /* host_pci.c */ + extern int __init bcma_host_pci_init(void); +--- /dev/null ++++ b/drivers/bcma/driver_chipcommon_sflash.c +@@ -0,0 +1,398 @@ ++/* ++ * Broadcom SiliconBackplane 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 "bcma_private.h" ++ ++#define NUM_RETRIES 3 ++ ++ ++/* Issue a serial flash command */ ++static inline void bcma_sflash_cmd(struct bcma_drv_cc *cc, u32 opcode) ++{ ++ bcma_cc_write32(cc, BCMA_CC_FLASHCTL, ++ BCMA_CC_FLASHCTL_START | opcode); ++ while (bcma_cc_read32(cc, BCMA_CC_FLASHCTL) & BCMA_CC_FLASHCTL_BUSY) ++ ; ++} ++ ++ ++static inline void bcma_sflash_write_u8(struct bcma_drv_cc *cc, ++ u32 offset, u8 byte) ++{ ++ bcma_cc_write32(cc, BCMA_CC_FLASHADDR, offset); ++ bcma_cc_write32(cc, BCMA_CC_FLASHDATA, byte); ++} ++ ++/* Initialize serial flash access */ ++int bcma_sflash_init(struct bcma_drv_cc *cc) ++{ ++ u32 id, id2; ++ ++ memset(&cc->sflash, 0, sizeof(struct bcma_sflash)); ++ ++ switch (cc->capabilities & BCMA_CC_CAP_FLASHT) { ++ case BCMA_CC_FLASHT_STSER: ++ /* Probe for ST chips */ ++ bcma_sflash_cmd(cc, BCMA_CC_FLASHCTL_ST_DP); ++ bcma_cc_write32(cc, BCMA_CC_FLASHADDR, 0); ++ bcma_sflash_cmd(cc, BCMA_CC_FLASHCTL_ST_RES); ++ id = bcma_cc_read32(cc, BCMA_CC_FLASHDATA); ++ cc->sflash.blocksize = 64 * 1024; ++ switch (id) { ++ case 0x11: ++ /* ST M25P20 2 Mbit Serial Flash */ ++ cc->sflash.numblocks = 4; ++ break; ++ case 0x12: ++ /* ST M25P40 4 Mbit Serial Flash */ ++ cc->sflash.numblocks = 8; ++ break; ++ case 0x13: ++ /* ST M25P80 8 Mbit Serial Flash */ ++ cc->sflash.numblocks = 16; ++ break; ++ case 0x14: ++ /* ST M25P16 16 Mbit Serial Flash */ ++ cc->sflash.numblocks = 32; ++ break; ++ case 0x15: ++ /* ST M25P32 32 Mbit Serial Flash */ ++ cc->sflash.numblocks = 64; ++ break; ++ case 0x16: ++ /* ST M25P64 64 Mbit Serial Flash */ ++ cc->sflash.numblocks = 128; ++ break; ++ case 0x17: ++ /* ST M25FL128 128 Mbit Serial Flash */ ++ cc->sflash.numblocks = 256; ++ break; ++ case 0xbf: ++ /* All of the following flashes are SST with ++ * 4KB subsectors. Others should be added but ++ * We'll have to revamp the way we identify them ++ * since RES is not eough to disambiguate them. ++ */ ++ cc->sflash.blocksize = 4 * 1024; ++ bcma_cc_write32(cc, BCMA_CC_FLASHADDR, 1); ++ bcma_sflash_cmd(cc, BCMA_CC_FLASHCTL_ST_RES); ++ id2 = bcma_cc_read32(cc, BCMA_CC_FLASHDATA); ++ switch (id2) { ++ case 1: ++ /* SST25WF512 512 Kbit Serial Flash */ ++ case 0x48: ++ /* SST25VF512 512 Kbit Serial Flash */ ++ cc->sflash.numblocks = 16; ++ break; ++ case 2: ++ /* SST25WF010 1 Mbit Serial Flash */ ++ case 0x49: ++ /* SST25VF010 1 Mbit Serial Flash */ ++ cc->sflash.numblocks = 32; ++ break; ++ case 3: ++ /* SST25WF020 2 Mbit Serial Flash */ ++ case 0x43: ++ /* SST25VF020 2 Mbit Serial Flash */ ++ cc->sflash.numblocks = 64; ++ break; ++ case 4: ++ /* SST25WF040 4 Mbit Serial Flash */ ++ case 0x44: ++ /* SST25VF040 4 Mbit Serial Flash */ ++ case 0x8d: ++ /* SST25VF040B 4 Mbit Serial Flash */ ++ cc->sflash.numblocks = 128; ++ break; ++ case 5: ++ /* SST25WF080 8 Mbit Serial Flash */ ++ case 0x8e: ++ /* SST25VF080B 8 Mbit Serial Flash */ ++ cc->sflash.numblocks = 256; ++ break; ++ case 0x41: ++ /* SST25VF016 16 Mbit Serial Flash */ ++ cc->sflash.numblocks = 512; ++ break; ++ case 0x4a: ++ /* SST25VF032 32 Mbit Serial Flash */ ++ cc->sflash.numblocks = 1024; ++ break; ++ case 0x4b: ++ /* SST25VF064 64 Mbit Serial Flash */ ++ cc->sflash.numblocks = 2048; ++ break; ++ } ++ break; ++ } ++ break; ++ ++ case BCMA_CC_FLASHT_ATSER: ++ /* Probe for Atmel chips */ ++ bcma_sflash_cmd(cc, BCMA_CC_FLASHCTL_AT_STATUS); ++ id = bcma_cc_read32(cc, BCMA_CC_FLASHDATA) & 0x3c; ++ switch (id) { ++ case 0xc: ++ /* Atmel AT45DB011 1Mbit Serial Flash */ ++ cc->sflash.blocksize = 256; ++ cc->sflash.numblocks = 512; ++ break; ++ case 0x14: ++ /* Atmel AT45DB021 2Mbit Serial Flash */ ++ cc->sflash.blocksize = 256; ++ cc->sflash.numblocks = 1024; ++ break; ++ case 0x1c: ++ /* Atmel AT45DB041 4Mbit Serial Flash */ ++ cc->sflash.blocksize = 256; ++ cc->sflash.numblocks = 2048; ++ break; ++ case 0x24: ++ /* Atmel AT45DB081 8Mbit Serial Flash */ ++ cc->sflash.blocksize = 256; ++ cc->sflash.numblocks = 4096; ++ break; ++ case 0x2c: ++ /* Atmel AT45DB161 16Mbit Serial Flash */ ++ cc->sflash.blocksize = 512; ++ cc->sflash.numblocks = 4096; ++ break; ++ case 0x34: ++ /* Atmel AT45DB321 32Mbit Serial Flash */ ++ cc->sflash.blocksize = 512; ++ cc->sflash.numblocks = 8192; ++ break; ++ case 0x3c: ++ /* Atmel AT45DB642 64Mbit Serial Flash */ ++ cc->sflash.blocksize = 1024; ++ cc->sflash.numblocks = 8192; ++ break; ++ } ++ break; ++ } ++ ++ cc->sflash.size = cc->sflash.blocksize * cc->sflash.numblocks; ++ ++ return cc->sflash.size ? 0 : -ENODEV; ++} ++ ++/* Read len bytes starting at offset into buf. Returns number of bytes read. */ ++int bcma_sflash_read(struct bcma_drv_cc *cc, u32 offset, u32 len, u8 *buf) ++{ ++ u8 *from, *to; ++ u32 cnt, i; ++ ++ if (!len) ++ return 0; ++ ++ if ((offset + len) > cc->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(BCMA_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. */ ++int bcma_sflash_poll(struct bcma_drv_cc *cc, u32 offset) ++{ ++ if (offset >= cc->sflash.size) ++ return -22; ++ ++ switch (cc->capabilities & BCMA_CC_CAP_FLASHT) { ++ case BCMA_CC_FLASHT_STSER: ++ /* Check for ST Write In Progress bit */ ++ bcma_sflash_cmd(cc, BCMA_CC_FLASHCTL_ST_RDSR); ++ return bcma_cc_read32(cc, BCMA_CC_FLASHDATA) ++ & BCMA_CC_FLASHDATA_ST_WIP; ++ case BCMA_CC_FLASHT_ATSER: ++ /* Check for Atmel Ready bit */ ++ bcma_sflash_cmd(cc, BCMA_CC_FLASHCTL_AT_STATUS); ++ return !(bcma_cc_read32(cc, BCMA_CC_FLASHDATA) ++ & BCMA_CC_FLASHDATA_AT_READY); ++ } ++ ++ return 0; ++} ++ ++ ++static int sflash_st_write(struct bcma_drv_cc *cc, u32 offset, u32 len, ++ const u8 *buf) ++{ ++ int written = 1; ++ ++ /* Enable writes */ ++ bcma_sflash_cmd(cc, BCMA_CC_FLASHCTL_ST_WREN); ++ bcma_sflash_write_u8(cc, offset, *buf++); ++ /* Issue a page program with CSA bit set */ ++ bcma_sflash_cmd(cc, BCMA_CC_FLASHCTL_ST_CSA | BCMA_CC_FLASHCTL_ST_PP); ++ offset++; ++ len--; ++ while (len > 0) { ++ if ((offset & 255) == 0) { ++ /* Page boundary, poll droping cs and return */ ++ bcma_cc_write32(cc, BCMA_CC_FLASHCTL, 0); ++ udelay(1); ++ if (!bcma_sflash_poll(cc, offset)) { ++ /* Flash rejected command */ ++ return -EAGAIN; ++ } ++ return written; ++ } else { ++ /* Write single byte */ ++ bcma_sflash_cmd(cc, ++ BCMA_CC_FLASHCTL_ST_CSA | ++ *buf++); ++ } ++ written++; ++ offset++; ++ len--; ++ } ++ /* All done, drop cs & poll */ ++ bcma_cc_write32(cc, BCMA_CC_FLASHCTL, 0); ++ udelay(1); ++ if (!bcma_sflash_poll(cc, offset)) { ++ /* Flash rejected command */ ++ return -EAGAIN; ++ } ++ return written; ++} ++ ++static int sflash_at_write(struct bcma_drv_cc *cc, u32 offset, u32 len, ++ const u8 *buf) ++{ ++ struct bcma_sflash *sfl = &cc->sflash; ++ u32 page, byte, mask; ++ int ret = 0; ++ ++ mask = sfl->blocksize - 1; ++ page = (offset & ~mask) << 1; ++ byte = offset & mask; ++ /* Read main memory page into buffer 1 */ ++ if (byte || (len < sfl->blocksize)) { ++ int i = 100; ++ bcma_cc_write32(cc, BCMA_CC_FLASHADDR, page); ++ bcma_sflash_cmd(cc, BCMA_CC_FLASHCTL_AT_BUF1_LOAD); ++ /* 250 us for AT45DB321B */ ++ while (i > 0 && bcma_sflash_poll(cc, offset)) { ++ udelay(10); ++ i--; ++ } ++ BUG_ON(!bcma_sflash_poll(cc, offset)); ++ } ++ /* Write into buffer 1 */ ++ for (ret = 0; (ret < (int)len) && (byte < sfl->blocksize); ret++) { ++ bcma_sflash_write_u8(cc, byte++, *buf++); ++ bcma_sflash_cmd(cc, BCMA_CC_FLASHCTL_AT_BUF1_WRITE); ++ } ++ /* Write buffer 1 into main memory page */ ++ bcma_cc_write32(cc, BCMA_CC_FLASHADDR, page); ++ bcma_sflash_cmd(cc, BCMA_CC_FLASHCTL_AT_BUF1_PROGRAM); ++ ++ return ret; ++} ++ ++/* Write len bytes starting at offset into buf. Returns number of bytes ++ * written. Caller should poll for completion. ++ */ ++int bcma_sflash_write(struct bcma_drv_cc *cc, u32 offset, u32 len, ++ const u8 *buf) ++{ ++ struct bcma_sflash *sfl; ++ int ret = 0, tries = NUM_RETRIES; ++ ++ if (!len) ++ return 0; ++ ++ if ((offset + len) > cc->sflash.size) ++ return -EINVAL; ++ ++ sfl = &cc->sflash; ++ switch (cc->capabilities & BCMA_CC_CAP_FLASHT) { ++ case BCMA_CC_FLASHT_STSER: ++ do { ++ ret = sflash_st_write(cc, 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 BCMA_CC_FLASHT_ATSER: ++ ret = sflash_at_write(cc, offset, len, buf); ++ break; ++ } ++ ++ return ret; ++} ++ ++/* Erase a region. Returns number of bytes scheduled for erasure. ++ * Caller should poll for completion. ++ */ ++int bcma_sflash_erase(struct bcma_drv_cc *cc, u32 offset) ++{ ++ struct bcma_sflash *sfl; ++ ++ if (offset >= cc->sflash.size) ++ return -EINVAL; ++ ++ sfl = &cc->sflash; ++ switch (cc->capabilities & BCMA_CC_CAP_FLASHT) { ++ case BCMA_CC_FLASHT_STSER: ++ bcma_sflash_cmd(cc, BCMA_CC_FLASHCTL_ST_WREN); ++ bcma_cc_write32(cc, BCMA_CC_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 (sfl->blocksize < (64 * 1024)) ++ bcma_sflash_cmd(cc, BCMA_CC_FLASHCTL_ST_SSE); ++ else ++ bcma_sflash_cmd(cc, BCMA_CC_FLASHCTL_ST_SE); ++ return sfl->blocksize; ++ case BCMA_CC_FLASHT_ATSER: ++ bcma_cc_write32(cc, BCMA_CC_FLASHADDR, offset << 1); ++ bcma_sflash_cmd(cc, BCMA_CC_FLASHCTL_AT_PAGE_ERASE); ++ return sfl->blocksize; ++ } ++ ++ return 0; ++} +--- a/drivers/bcma/driver_mips.c ++++ b/drivers/bcma/driver_mips.c +@@ -185,7 +185,13 @@ static void bcma_core_mips_flash_detect( + switch (bus->drv_cc.capabilities & BCMA_CC_CAP_FLASHT) { + case BCMA_CC_FLASHT_STSER: + case BCMA_CC_FLASHT_ATSER: +- pr_err("Serial flash not supported.\n"); ++#ifdef CONFIG_BCMA_SFLASH ++ pr_info("found serial flash.\n"); ++ bus->drv_cc.flash_type = BCMA_SFLASH; ++ bcma_sflash_init(&bus->drv_cc); ++#else ++ pr_info("serial flash not supported.\n"); ++#endif /* CONFIG_BCMA_SFLASH */ + break; + case BCMA_CC_FLASHT_PARA: + pr_info("found parallel flash.\n"); +--- a/include/linux/bcma/bcma_driver_chipcommon.h ++++ b/include/linux/bcma/bcma_driver_chipcommon.h +@@ -399,6 +399,7 @@ struct bcma_chipcommon_pmu { + #ifdef CONFIG_BCMA_DRIVER_MIPS + enum bcma_flash_type { + BCMA_PFLASH, ++ BCMA_SFLASH, + }; + + struct bcma_pflash { +@@ -407,6 +408,14 @@ struct bcma_pflash { + u32 window_size; + }; + ++#ifdef CONFIG_BCMA_SFLASH ++struct bcma_sflash { ++ u32 blocksize; /* Block size */ ++ u32 numblocks; /* Number of blocks */ ++ u32 size; /* Total size in bytes */ ++}; ++#endif /* CONFIG_BCMA_SFLASH */ ++ + struct bcma_serial_port { + void *regs; + unsigned long clockspeed; +@@ -429,6 +438,9 @@ struct bcma_drv_cc { + enum bcma_flash_type flash_type; + union { + struct bcma_pflash pflash; ++#ifdef CONFIG_BCMA_SFLASH ++ struct bcma_sflash sflash; ++#endif /* CONFIG_BCMA_SFLASH */ + }; + + int nr_serial_ports; +@@ -483,4 +495,14 @@ extern void bcma_chipco_chipctl_maskset( + extern void bcma_chipco_regctl_maskset(struct bcma_drv_cc *cc, + u32 offset, u32 mask, u32 set); + ++#ifdef CONFIG_BCMA_SFLASH ++/* Chipcommon sflash support. */ ++int bcma_sflash_read(struct bcma_drv_cc *cc, u32 offset, u32 len, ++ u8 *buf); ++int bcma_sflash_poll(struct bcma_drv_cc *cc, u32 offset); ++int bcma_sflash_write(struct bcma_drv_cc *cc, u32 offset, u32 len, ++ const u8 *buf); ++int bcma_sflash_erase(struct bcma_drv_cc *cc, u32 offset); ++#endif /* CONFIG_BCMA_SFLASH */ ++ + #endif /* LINUX_BCMA_DRIVER_CC_H_ */ -- cgit v1.2.3