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Diffstat (limited to 'target/linux/brcm47xx/patches-3.3/071-bcma-add-functions-to-write-to-nand-flash.patch')
-rw-r--r--target/linux/brcm47xx/patches-3.3/071-bcma-add-functions-to-write-to-nand-flash.patch232
1 files changed, 0 insertions, 232 deletions
diff --git a/target/linux/brcm47xx/patches-3.3/071-bcma-add-functions-to-write-to-nand-flash.patch b/target/linux/brcm47xx/patches-3.3/071-bcma-add-functions-to-write-to-nand-flash.patch
deleted file mode 100644
index f1b4f7feb..000000000
--- a/target/linux/brcm47xx/patches-3.3/071-bcma-add-functions-to-write-to-nand-flash.patch
+++ /dev/null
@@ -1,232 +0,0 @@
---- a/drivers/bcma/driver_chipcommon_nflash.c
-+++ b/drivers/bcma/driver_chipcommon_nflash.c
-@@ -2,16 +2,23 @@
- * Broadcom specific AMBA
- * ChipCommon NAND flash interface
- *
-+ * Copyright 2011, Tathagata Das <tathagata@alumnux.com>
-+ * Copyright 2010, Broadcom Corporation
-+ *
- * Licensed under the GNU/GPL. See COPYING for details.
- */
-
-+#include <linux/delay.h>
-+#include <linux/mtd/bcm47xx_nand.h>
-+#include <linux/mtd/nand.h>
- #include <linux/platform_device.h>
- #include <linux/bcma/bcma.h>
-+#include <linux/bcma/bcma_driver_chipcommon.h>
-
- #include "bcma_private.h"
-
- struct platform_device bcma_nflash_dev = {
-- .name = "bcma_nflash",
-+ .name = "bcm47xx-nflash",
- .num_resources = 0,
- };
-
-@@ -31,6 +38,11 @@ int bcma_nflash_init(struct bcma_drv_cc
- return -ENODEV;
- }
-
-+ if (bus->chipinfo.id == BCMA_CHIP_ID_BCM4706) {
-+ bcma_err(bus, "NAND flash support for BCM4706 not implemented\n");
-+ return -ENOTSUPP;
-+ }
-+
- cc->nflash.present = true;
- if (cc->core->id.rev == 38 &&
- (cc->status & BCMA_CC_CHIPST_5357_NAND_BOOT))
-@@ -42,3 +54,141 @@ int bcma_nflash_init(struct bcma_drv_cc
-
- return 0;
- }
-+
-+/* Issue a nand flash command */
-+static inline void bcma_nflash_cmd(struct bcma_drv_cc *cc, u32 opcode)
-+{
-+ bcma_cc_write32(cc, NAND_CMD_START, opcode);
-+ bcma_cc_read32(cc, NAND_CMD_START);
-+}
-+
-+/* Check offset and length */
-+static int bcma_nflash_offset_is_valid(struct bcma_drv_cc *cc, u32 offset, u32 len, u32 mask)
-+{
-+ if ((offset & mask) != 0 || (len & mask) != 0) {
-+ pr_err("%s(): Address is not aligned. offset: %x, len: %x, mask: %x\n", __func__, offset, len, mask);
-+ return 1;
-+ }
-+
-+ if ((((offset + len) >> 20) >= cc->nflash.size) &&
-+ (((offset + len) & ((1 << 20) - 1)) != 0)) {
-+ pr_err("%s(): Address is outside Flash memory region. offset: %x, len: %x, mask: %x\n", __func__, offset, len, mask);
-+ return 1;
-+ }
-+
-+ return 0;
-+}
-+
-+#define NF_RETRIES 1000000
-+
-+/* Poll for command completion. Returns zero when complete. */
-+int bcma_nflash_poll(struct bcma_drv_cc *cc)
-+{
-+ u32 retries = NF_RETRIES;
-+ u32 pollmask = NIST_CTRL_READY|NIST_FLASH_READY;
-+ u32 mask;
-+
-+ while (retries--) {
-+ mask = bcma_cc_read32(cc, NAND_INTFC_STATUS) & pollmask;
-+ if (mask == pollmask)
-+ return 0;
-+ cpu_relax();
-+ }
-+
-+ if (!retries) {
-+ pr_err("bcma_nflash_poll: not ready\n");
-+ return -1;
-+ }
-+
-+ return 0;
-+}
-+
-+/* Read len bytes starting at offset into buf. Returns number of bytes read. */
-+int bcma_nflash_read(struct bcma_drv_cc *cc, u32 offset, u32 len, u8 *buf)
-+{
-+ u32 mask;
-+ int i;
-+ u32 *to, val, res;
-+
-+ mask = NFL_SECTOR_SIZE - 1;
-+ if (bcma_nflash_offset_is_valid(cc, offset, len, mask))
-+ return 0;
-+
-+ to = (u32 *)buf;
-+ res = len;
-+ while (res > 0) {
-+ bcma_cc_write32(cc, NAND_CMD_ADDR, offset);
-+ bcma_nflash_cmd(cc, NCMD_PAGE_RD);
-+ if (bcma_nflash_poll(cc) < 0)
-+ break;
-+ val = bcma_cc_read32(cc, NAND_INTFC_STATUS);
-+ if ((val & NIST_CACHE_VALID) == 0)
-+ break;
-+ bcma_cc_write32(cc, NAND_CACHE_ADDR, 0);
-+ for (i = 0; i < NFL_SECTOR_SIZE; i += 4, to++) {
-+ *to = bcma_cc_read32(cc, NAND_CACHE_DATA);
-+ }
-+ res -= NFL_SECTOR_SIZE;
-+ offset += NFL_SECTOR_SIZE;
-+ }
-+ return (len - res);
-+}
-+
-+/* Write len bytes starting at offset into buf. Returns success (0) or failure (!0).
-+ * Should poll for completion.
-+ */
-+int bcma_nflash_write(struct bcma_drv_cc *cc, u32 offset, u32 len,
-+ const u8 *buf)
-+{
-+ u32 mask;
-+ int i;
-+ u32 *from, res, reg;
-+
-+ mask = cc->nflash.pagesize - 1;
-+ if (bcma_nflash_offset_is_valid(cc, offset, len, mask))
-+ return 1;
-+
-+ /* disable partial page enable */
-+ reg = bcma_cc_read32(cc, NAND_ACC_CONTROL);
-+ reg &= ~NAC_PARTIAL_PAGE_EN;
-+ bcma_cc_write32(cc, NAND_ACC_CONTROL, reg);
-+
-+ from = (u32 *)buf;
-+ res = len;
-+ while (res > 0) {
-+ bcma_cc_write32(cc, NAND_CACHE_ADDR, 0);
-+ for (i = 0; i < cc->nflash.pagesize; i += 4, from++) {
-+ if (i % 512 == 0)
-+ bcma_cc_write32(cc, NAND_CMD_ADDR, i);
-+ bcma_cc_write32(cc, NAND_CACHE_DATA, *from);
-+ }
-+ bcma_cc_write32(cc, NAND_CMD_ADDR, offset + cc->nflash.pagesize - 512);
-+ bcma_nflash_cmd(cc, NCMD_PAGE_PROG);
-+ if (bcma_nflash_poll(cc) < 0)
-+ break;
-+ res -= cc->nflash.pagesize;
-+ offset += cc->nflash.pagesize;
-+ }
-+
-+ if (res <= 0)
-+ return 0;
-+ else
-+ return (len - res);
-+}
-+
-+/* Erase a region. Returns success (0) or failure (-1).
-+ * Poll for completion.
-+ */
-+int bcma_nflash_erase(struct bcma_drv_cc *cc, u32 offset)
-+{
-+ if ((offset >> 20) >= cc->nflash.size)
-+ return -1;
-+ if ((offset & (cc->nflash.blocksize - 1)) != 0)
-+ return -1;
-+
-+ bcma_cc_write32(cc, NAND_CMD_ADDR, offset);
-+ bcma_nflash_cmd(cc, NCMD_BLOCK_ERASE);
-+ if (bcma_nflash_poll(cc) < 0)
-+ return -1;
-+ return 0;
-+}
---- a/include/linux/bcma/bcma_driver_chipcommon.h
-+++ b/include/linux/bcma/bcma_driver_chipcommon.h
-@@ -4,6 +4,7 @@
- #include <linux/platform_device.h>
-
- #include <linux/mtd/bcm47xx_sflash.h>
-+#include <linux/mtd/bcm47xx_nand.h>
-
- /** ChipCommon core registers. **/
- #define BCMA_CC_ID 0x0000
-@@ -521,17 +522,6 @@ struct bcma_pflash {
- };
-
-
--#ifdef CONFIG_BCMA_NFLASH
--struct mtd_info;
--
--struct bcma_nflash {
-- bool present;
-- bool boot; /* This is the flash the SoC boots from */
--
-- struct mtd_info *mtd;
--};
--#endif
--
- struct bcma_serial_port {
- void *regs;
- unsigned long clockspeed;
-@@ -557,7 +547,7 @@ struct bcma_drv_cc {
- struct bcm47xx_sflash sflash;
- #endif
- #ifdef CONFIG_BCMA_NFLASH
-- struct bcma_nflash nflash;
-+ struct bcm47xx_nflash nflash;
- #endif
-
- int nr_serial_ports;
-@@ -616,4 +606,13 @@ extern void bcma_chipco_regctl_maskset(s
- u32 offset, u32 mask, u32 set);
- extern void bcma_pmu_spuravoid_pllupdate(struct bcma_drv_cc *cc, int spuravoid);
-
-+#ifdef CONFIG_BCMA_NFLASH
-+/* Chipcommon nflash support. */
-+int bcma_nflash_read(struct bcma_drv_cc *cc, u32 offset, u32 len, u8 *buf);
-+int bcma_nflash_poll(struct bcma_drv_cc *cc);
-+int bcma_nflash_write(struct bcma_drv_cc *cc, u32 offset, u32 len, const u8 *buf);
-+int bcma_nflash_erase(struct bcma_drv_cc *cc, u32 offset);
-+int bcma_nflash_commit(struct bcma_drv_cc *cc, u32 offset, u32 len, const u8 *buf);
-+#endif
-+
- #endif /* LINUX_BCMA_DRIVER_CC_H_ */
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-01 03:11:46 +0000