domenico/openwrt_NSS_ACW
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

brcm47xx: update flash drivers

Browse Source 
SVN-Revision: 31126
This commit is contained in:
Hauke Mehrtens
2012-03-28 17:03:18 +00:00
parent f96ffe2c96
commit 13b6ec1d05
19 changed files with 373 additions and 693 deletions
Download Patch File Download Diff File Expand all files Collapse all files

148
target/linux/brcm47xx/patches-3.2/023-ssb-add-serial-flash-support.patch
View File

@@ -1,20 +1,3 @@
From 980da78179592a3f5f99168bc5af415835aa8c13 Mon Sep 17 00:00:00 2001
From: Hauke Mehrtens <hauke@hauke-m.de>
Date: Sun, 24 Jul 2011 20:20:36 +0200
Subject: [PATCH 15/26] ssb: add serial flash support
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
---
drivers/ssb/Kconfig | 6 +
drivers/ssb/Makefile | 1 +
drivers/ssb/driver_chipcommon_sflash.c | 556 +++++++++++++++++++++++++++++
drivers/ssb/driver_mipscore.c | 6 +
drivers/ssb/ssb_private.h | 4 +
include/linux/ssb/ssb_driver_chipcommon.h | 30 ++-
6 files changed, 601 insertions(+), 2 deletions(-)
create mode 100644 drivers/ssb/driver_chipcommon_sflash.c
--- a/drivers/ssb/Kconfig
+++ b/drivers/ssb/Kconfig
@@ -137,6 +137,12 @@ config SSB_DRIVER_MIPS
@@ -42,11 +25,12 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
ssb-$(CONFIG_SSB_DRIVER_PCICORE) += driver_pcicore.o
--- /dev/null
+++ b/drivers/ssb/driver_chipcommon_sflash.c
@@ -0,0 +1,556 @@
@@ -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.
@@ -73,7 +57,7 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+
+
+static inline void ssb_sflash_write_u8(struct ssb_chipcommon *cc,
+ u32 offset, u8 byte)
+ u32 offset, u8 byte)
+{
+ chipco_write32(cc, SSB_CHIPCO_FLASHADDR, offset);
+ chipco_write32(cc, SSB_CHIPCO_FLASHDATA, byte);
@@ -233,8 +217,7 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+}
+
+/* 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)
+int ssb_sflash_read(struct ssb_chipcommon *cc, u32 offset, u32 len, u8 *buf)
+{
+ u8 *from, *to;
+ u32 cnt, i;
@@ -310,7 +293,6 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+ 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) {
@@ -478,11 +460,14 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+ 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.
+ /* 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.
+ */
+ ssb_sflash_cmd(cc, (sfl->blocksize < (64 * 1024)) ? SSB_CHIPCO_FLASHCTL_ST_SSE : SSB_CHIPCO_FLASHCTL_ST_SE);
+ 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);
@@ -492,113 +477,6 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+
+ return 0;
+}
+
+/*
+ * writes the appropriate range of flash, a NULL buf simply erases
+ * the region of flash
+ */
+int ssb_sflash_commit(struct ssb_chipcommon *cc, u32 offset, u32 len,
+ const u8 *buf)
+{
+ struct ssb_sflash *sfl;
+ u8 *block = NULL, *cur_ptr, *blk_ptr;
+ u32 blocksize = 0, mask, cur_offset, cur_length, cur_retlen, remainder;
+ u32 blk_offset, blk_len, copied;
+ int bytes, ret = 0;
+
+ /* Check address range */
+ if (len <= 0)
+ return 0;
+
+ sfl = &cc->sflash;
+ if ((offset + len) > sfl->size)
+ return -EINVAL;
+
+ blocksize = sfl->blocksize;
+ mask = blocksize - 1;
+
+ /* Allocate a block of mem */
+ block = kmalloc(blocksize, GFP_KERNEL);
+ if (!block)
+ return -ENOMEM;
+
+ while (len) {
+ /* Align offset */
+ cur_offset = offset & ~mask;
+ cur_length = blocksize;
+ cur_ptr = block;
+
+ remainder = blocksize - (offset & mask);
+ if (len < remainder)
+ cur_retlen = len;
+ else
+ cur_retlen = remainder;
+
+ /* buf == NULL means erase only */
+ if (buf) {
+ /* Copy existing data into holding block if necessary */
+ if ((offset & mask) || (len < blocksize)) {
+ blk_offset = cur_offset;
+ blk_len = cur_length;
+ blk_ptr = cur_ptr;
+
+ /* Copy entire block */
+ while (blk_len) {
+ copied = ssb_sflash_read(cc,
+ blk_offset,
+ blk_len, blk_ptr);
+ blk_offset += copied;
+ blk_len -= copied;
+ blk_ptr += copied;
+ }
+ }
+
+ /* Copy input data into holding block */
+ memcpy(cur_ptr + (offset & mask), buf, cur_retlen);
+ }
+
+ /* Erase block */
+ ret = ssb_sflash_erase(cc, cur_offset);
+ if (ret < 0)
+ goto done;
+
+ while (ssb_sflash_poll(cc, cur_offset));
+
+ /* buf == NULL means erase only */
+ if (!buf) {
+ offset += cur_retlen;
+ len -= cur_retlen;
+ continue;
+ }
+
+ /* Write holding block */
+ while (cur_length > 0) {
+ bytes = ssb_sflash_write(cc, cur_offset,
+ cur_length, cur_ptr);
+
+ if (bytes < 0) {
+ ret = bytes;
+ goto done;
+ }
+
+ while (ssb_sflash_poll(cc, cur_offset))
+ ;
+
+ cur_offset += bytes;
+ cur_length -= bytes;
+ cur_ptr += bytes;
+ }
+
+ offset += cur_retlen;
+ len -= cur_retlen;
+ buf += cur_retlen;
+ }
+
+ ret = len;
+done:
+ kfree(block);
+ return ret;
+}
--- a/drivers/ssb/driver_mipscore.c
+++ b/drivers/ssb/driver_mipscore.c
@@ -203,7 +203,13 @@ static void ssb_mips_flash_detect(struct
@@ -676,7 +554,7 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
};
#endif /* CONFIG_SSB_DRIVER_MIPS */
};
@@ -666,6 +680,18 @@ extern int ssb_chipco_serial_init(struct
@@ -666,6 +680,16 @@ extern int ssb_chipco_serial_init(struct
struct ssb_serial_port *ports);
#endif /* CONFIG_SSB_SERIAL */
@@ -688,8 +566,6 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+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);
+int ssb_sflash_commit(struct ssb_chipcommon *cc, u32 offset, u32 len,
+ const u8 *buf);
+#endif /* CONFIG_SSB_SFLASH */
+
/* PMU support */