diff options
Diffstat (limited to 'target/linux/brcm47xx/patches-3.2/023-ssb-add-serial-flash-support.patch')
-rw-r--r-- | target/linux/brcm47xx/patches-3.2/023-ssb-add-serial-flash-support.patch | 573 |
1 files changed, 0 insertions, 573 deletions
diff --git a/target/linux/brcm47xx/patches-3.2/023-ssb-add-serial-flash-support.patch b/target/linux/brcm47xx/patches-3.2/023-ssb-add-serial-flash-support.patch deleted file mode 100644 index ba5a5c2d1b..0000000000 --- a/target/linux/brcm47xx/patches-3.2/023-ssb-add-serial-flash-support.patch +++ /dev/null @@ -1,573 +0,0 @@ ---- a/drivers/ssb/Kconfig -+++ b/drivers/ssb/Kconfig -@@ -137,6 +137,12 @@ config SSB_DRIVER_MIPS - - If unsure, say N - -+config SSB_SFLASH -+ bool -+ depends on SSB_DRIVER_MIPS -+ default y -+ -+ - # Assumption: We are on embedded, if we compile the MIPS core. - config SSB_EMBEDDED - bool ---- 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 +1,451 @@ -+/* -+ * Broadcom SiliconBackplane chipcommon serial flash interface -+ * -+ * Copyright 2011, Jonas Gorski <jonas.gorski@gmail.com> -+ * Copyright 2011, 2012, Hauke Mehrtens <hauke@hauke-m.de> -+ * Copyright 2010, Broadcom Corporation -+ * -+ * Licensed under the GNU/GPL. See COPYING for details. -+ */ -+ -+#include <linux/ssb/ssb.h> -+#include <linux/ssb/ssb_driver_chipcommon.h> -+#include <linux/delay.h> -+ -+#include "ssb_private.h" -+ -+#define NUM_RETRIES 3 -+ -+ -+/* Issue a serial flash command */ -+static inline void ssb_sflash_cmd(struct ssb_chipcommon *cc, u32 opcode) -+{ -+ chipco_write32(cc, SSB_CHIPCO_FLASHCTL, -+ SSB_CHIPCO_FLASHCTL_START | opcode); -+ while (chipco_read32(cc, SSB_CHIPCO_FLASHCTL) -+ & SSB_CHIPCO_FLASHCTL_BUSY) -+ ; -+} -+ -+ -+static inline void ssb_sflash_write_u8(struct ssb_chipcommon *cc, -+ u32 offset, u8 byte) -+{ -+ chipco_write32(cc, SSB_CHIPCO_FLASHADDR, offset); -+ chipco_write32(cc, SSB_CHIPCO_FLASHDATA, byte); -+} -+ -+/* Initialize serial flash access */ -+int ssb_sflash_init(struct ssb_chipcommon *cc) -+{ -+ u32 id, id2; -+ -+ memset(&cc->sflash, 0, sizeof(struct ssb_sflash)); -+ -+ switch (cc->capabilities & SSB_CHIPCO_CAP_FLASHT) { -+ case SSB_CHIPCO_FLASHT_STSER: -+ /* Probe for ST chips */ -+ ssb_sflash_cmd(cc, SSB_CHIPCO_FLASHCTL_ST_DP); -+ chipco_write32(cc, SSB_CHIPCO_FLASHADDR, 0); -+ ssb_sflash_cmd(cc, SSB_CHIPCO_FLASHCTL_ST_RES); -+ id = chipco_read32(cc, SSB_CHIPCO_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; -+ chipco_write32(cc, SSB_CHIPCO_FLASHADDR, 1); -+ ssb_sflash_cmd(cc, SSB_CHIPCO_FLASHCTL_ST_RES); -+ id2 = chipco_read32(cc, SSB_CHIPCO_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 SSB_CHIPCO_FLASHT_ATSER: -+ /* Probe for Atmel chips */ -+ ssb_sflash_cmd(cc, SSB_CHIPCO_FLASHCTL_AT_STATUS); -+ id = chipco_read32(cc, SSB_CHIPCO_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 ssb_sflash_read(struct ssb_chipcommon *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; -+ -+ -+ if (cc->dev->id.revision == 12) -+ from = (u8 *)KSEG1ADDR(SSB_FLASH2 + offset); -+ else -+ 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. */ -+int ssb_sflash_poll(struct ssb_chipcommon *cc, u32 offset) -+{ -+ if (offset >= cc->sflash.size) -+ return -22; -+ -+ switch (cc->capabilities & SSB_CHIPCO_CAP_FLASHT) { -+ case SSB_CHIPCO_FLASHT_STSER: -+ /* Check for ST Write In Progress bit */ -+ ssb_sflash_cmd(cc, SSB_CHIPCO_FLASHCTL_ST_RDSR); -+ return chipco_read32(cc, SSB_CHIPCO_FLASHDATA) -+ & SSB_CHIPCO_FLASHSTA_ST_WIP; -+ case SSB_CHIPCO_FLASHT_ATSER: -+ /* Check for Atmel Ready bit */ -+ ssb_sflash_cmd(cc, SSB_CHIPCO_FLASHCTL_AT_STATUS); -+ return !(chipco_read32(cc, SSB_CHIPCO_FLASHDATA) -+ & SSB_CHIPCO_FLASHSTA_AT_READY); -+ } -+ -+ return 0; -+} -+ -+ -+static int sflash_st_write(struct ssb_chipcommon *cc, u32 offset, u32 len, -+ const u8 *buf) -+{ -+ struct ssb_bus *bus = cc->dev->bus; -+ int ret = 0; -+ bool is4712b0 = (bus->chip_id == 0x4712) && (bus->chip_rev == 3); -+ u32 mask; -+ -+ /* Enable writes */ -+ ssb_sflash_cmd(cc, SSB_CHIPCO_FLASHCTL_ST_WREN); -+ if (is4712b0) { -+ mask = 1 << 14; -+ ssb_sflash_write_u8(cc, offset, *buf++); -+ /* Set chip select */ -+ chipco_set32(cc, SSB_CHIPCO_GPIOOUT, mask); -+ /* Issue a page program with the first byte */ -+ ssb_sflash_cmd(cc, SSB_CHIPCO_FLASHCTL_ST_PP); -+ ret = 1; -+ offset++; -+ len--; -+ while (len > 0) { -+ if ((offset & 255) == 0) { -+ /* Page boundary, drop cs and return */ -+ chipco_mask32(cc, SSB_CHIPCO_GPIOOUT, ~mask); -+ udelay(1); -+ if (!ssb_sflash_poll(cc, offset)) { -+ /* Flash rejected command */ -+ return -EAGAIN; -+ } -+ return ret; -+ } else { -+ /* Write single byte */ -+ ssb_sflash_cmd(cc, *buf++); -+ } -+ ret++; -+ offset++; -+ len--; -+ } -+ /* All done, drop cs */ -+ chipco_mask32(cc, SSB_CHIPCO_GPIOOUT, ~mask); -+ udelay(1); -+ if (!ssb_sflash_poll(cc, offset)) { -+ /* Flash rejected command */ -+ return -EAGAIN; -+ } -+ } else if (cc->dev->id.revision >= 20) { -+ ssb_sflash_write_u8(cc, offset, *buf++); -+ /* Issue a page program with CSA bit set */ -+ ssb_sflash_cmd(cc, -+ SSB_CHIPCO_FLASHCTL_ST_CSA | -+ SSB_CHIPCO_FLASHCTL_ST_PP); -+ ret = 1; -+ offset++; -+ len--; -+ while (len > 0) { -+ if ((offset & 255) == 0) { -+ /* Page boundary, poll droping cs and return */ -+ chipco_write32(cc, SSB_CHIPCO_FLASHCTL, 0); -+ udelay(1); -+ if (!ssb_sflash_poll(cc, offset)) { -+ /* Flash rejected command */ -+ return -EAGAIN; -+ } -+ return ret; -+ } else { -+ /* Write single byte */ -+ ssb_sflash_cmd(cc, -+ SSB_CHIPCO_FLASHCTL_ST_CSA | -+ *buf++); -+ } -+ ret++; -+ offset++; -+ len--; -+ } -+ /* All done, drop cs & poll */ -+ chipco_write32(cc, SSB_CHIPCO_FLASHCTL, 0); -+ udelay(1); -+ if (!ssb_sflash_poll(cc, offset)) { -+ /* Flash rejected command */ -+ return -EAGAIN; -+ } -+ } else { -+ ret = 1; -+ ssb_sflash_write_u8(cc, offset, *buf); -+ /* Page program */ -+ ssb_sflash_cmd(cc, SSB_CHIPCO_FLASHCTL_ST_PP); -+ } -+ return ret; -+} -+ -+static int sflash_at_write(struct ssb_chipcommon *cc, u32 offset, u32 len, -+ const u8 *buf) -+{ -+ struct ssb_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; -+ chipco_write32(cc, SSB_CHIPCO_FLASHADDR, page); -+ ssb_sflash_cmd(cc, SSB_CHIPCO_FLASHCTL_AT_BUF1_LOAD); -+ /* 250 us for AT45DB321B */ -+ while (i > 0 && ssb_sflash_poll(cc, offset)) { -+ udelay(10); -+ i--; -+ } -+ BUG_ON(!ssb_sflash_poll(cc, offset)); -+ } -+ /* Write into buffer 1 */ -+ for (ret = 0; (ret < (int)len) && (byte < sfl->blocksize); ret++) { -+ ssb_sflash_write_u8(cc, byte++, *buf++); -+ ssb_sflash_cmd(cc, -+ SSB_CHIPCO_FLASHCTL_AT_BUF1_WRITE); -+ } -+ /* Write buffer 1 into main memory page */ -+ chipco_write32(cc, SSB_CHIPCO_FLASHADDR, page); -+ ssb_sflash_cmd(cc, 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. -+ */ -+int ssb_sflash_write(struct ssb_chipcommon *cc, u32 offset, u32 len, -+ const u8 *buf) -+{ -+ struct ssb_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 & SSB_CHIPCO_CAP_FLASHT) { -+ case SSB_CHIPCO_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 SSB_CHIPCO_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 ssb_sflash_erase(struct ssb_chipcommon *cc, u32 offset) -+{ -+ struct ssb_sflash *sfl; -+ -+ if (offset >= cc->sflash.size) -+ return -EINVAL; -+ -+ sfl = &cc->sflash; -+ switch (cc->capabilities & SSB_CHIPCO_CAP_FLASHT) { -+ case SSB_CHIPCO_FLASHT_STSER: -+ ssb_sflash_cmd(cc, SSB_CHIPCO_FLASHCTL_ST_WREN); -+ chipco_write32(cc, 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 (sfl->blocksize < (64 * 1024)) -+ ssb_sflash_cmd(cc, SSB_CHIPCO_FLASHCTL_ST_SSE); -+ else -+ ssb_sflash_cmd(cc, SSB_CHIPCO_FLASHCTL_ST_SE); -+ return sfl->blocksize; -+ case SSB_CHIPCO_FLASHT_ATSER: -+ chipco_write32(cc, SSB_CHIPCO_FLASHADDR, offset << 1); -+ ssb_sflash_cmd(cc, SSB_CHIPCO_FLASHCTL_AT_PAGE_ERASE); -+ return sfl->blocksize; -+ } -+ -+ return 0; -+} ---- a/drivers/ssb/driver_mipscore.c -+++ b/drivers/ssb/driver_mipscore.c -@@ -203,7 +203,13 @@ 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: -+#ifdef CONFIG_SSB_SFLASH -+ pr_info("found serial flash.\n"); -+ bus->chipco.flash_type = SSB_SFLASH; -+ ssb_sflash_init(&bus->chipco); -+#else - pr_info("serial flash not supported.\n"); -+#endif /* CONFIG_SSB_SFLASH */ - break; - case SSB_CHIPCO_FLASHT_PARA: - pr_info("found parallel flash.\n"); ---- a/drivers/ssb/ssb_private.h -+++ b/drivers/ssb/ssb_private.h -@@ -192,6 +192,10 @@ extern int ssb_devices_freeze(struct ssb - extern int ssb_devices_thaw(struct ssb_freeze_context *ctx); - - -+#ifdef CONFIG_SSB_SFLASH -+/* driver_chipcommon_sflash.c */ -+int ssb_sflash_init(struct ssb_chipcommon *cc); -+#endif /* CONFIG_SSB_SFLASH */ - - /* b43_pci_bridge.c */ - #ifdef CONFIG_SSB_B43_PCI_BRIDGE ---- a/include/linux/ssb/ssb_driver_chipcommon.h -+++ b/include/linux/ssb/ssb_driver_chipcommon.h -@@ -503,8 +503,10 @@ - #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_RSIG 0x03AB /* Read Electronic Signature */ -+#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 */ - - /* Status register bits for ST flashes */ - #define SSB_CHIPCO_FLASHSTA_ST_WIP 0x01 /* Write In Progress */ -@@ -585,6 +587,7 @@ struct ssb_chipcommon_pmu { - #ifdef CONFIG_SSB_DRIVER_MIPS - enum ssb_flash_type { - SSB_PFLASH, -+ SSB_SFLASH, - }; - - struct ssb_pflash { -@@ -592,6 +595,14 @@ struct ssb_pflash { - u32 window; - u32 window_size; - }; -+ -+#ifdef CONFIG_SSB_SFLASH -+struct ssb_sflash { -+ u32 blocksize; /* Block size */ -+ u32 numblocks; /* Number of blocks */ -+ u32 size; /* Total size in bytes */ -+}; -+#endif /* CONFIG_SSB_SFLASH */ - #endif /* CONFIG_SSB_DRIVER_MIPS */ - - struct ssb_chipcommon { -@@ -605,6 +616,9 @@ struct ssb_chipcommon { - enum ssb_flash_type flash_type; - union { - struct ssb_pflash pflash; -+#ifdef CONFIG_SSB_SFLASH -+ struct ssb_sflash sflash; -+#endif /* CONFIG_SSB_SFLASH */ - }; - #endif /* CONFIG_SSB_DRIVER_MIPS */ - }; -@@ -666,6 +680,16 @@ extern int ssb_chipco_serial_init(struct - struct ssb_serial_port *ports); - #endif /* CONFIG_SSB_SERIAL */ - -+#ifdef CONFIG_SSB_SFLASH -+/* Chipcommon sflash support. */ -+int ssb_sflash_read(struct ssb_chipcommon *cc, u32 offset, u32 len, -+ u8 *buf); -+int ssb_sflash_poll(struct ssb_chipcommon *cc, u32 offset); -+int ssb_sflash_write(struct ssb_chipcommon *cc, u32 offset, u32 len, -+ const u8 *buf); -+int ssb_sflash_erase(struct ssb_chipcommon *cc, u32 offset); -+#endif /* CONFIG_SSB_SFLASH */ -+ - /* PMU support */ - extern void ssb_pmu_init(struct ssb_chipcommon *cc); - |