John Crispin
11 years ago
parent
c9d0738645
commit
d6a138141c
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From e98005f02af333e0bf905a1e53caef009a37fc55 Mon Sep 17 00:00:00 2001
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From: John Crispin <blogic@openwrt.org>
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Date: Sun, 14 Jul 2013 22:26:43 +0200
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Subject: add basic tffs driver
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---
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Index: linux-3.10.13/arch/mips/lantiq/xway/Makefile
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===================================================================
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--- linux-3.10.13.orig/arch/mips/lantiq/xway/Makefile 2013-09-29 00:18:30.164765435 +0200
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+++ linux-3.10.13/arch/mips/lantiq/xway/Makefile 2013-09-29 00:18:30.216765439 +0200
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@@ -1,6 +1,6 @@
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obj-y := prom.o sysctrl.o clk.o reset.o dma.o timer.o dcdc.o
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-obj-y += vmmc.o mtd_split.o
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+obj-y += vmmc.o mtd_split.o tffs.o
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obj-$(CONFIG_PCI) += ath_eep.o rt_eep.o pci-ath-fixup.o
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Index: linux-3.10.13/arch/mips/lantiq/xway/tffs.c
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===================================================================
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--- /dev/null 1970-01-01 00:00:00.000000000 +0000
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+++ linux-3.10.13/arch/mips/lantiq/xway/tffs.c 2013-09-29 00:37:17.712792305 +0200
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@@ -0,0 +1,87 @@
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+#include <linux/module.h>
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+#include <linux/mtd/mtd.h>
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+#include <linux/errno.h>
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+#include <linux/slab.h>
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+
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+struct tffs_entry {
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+ uint16_t id;
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+ uint16_t len;
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+};
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+
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+static struct tffs_id {
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+ uint32_t id;
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+ char *name;
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+ unsigned char *val;
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+ uint32_t offset;
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+ uint32_t len;
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+} ids[] = {
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+ { 0x01A9, "annex" },
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+ { 0x0188, "maca" },
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+ { 0x0189, "macb" },
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+ { 0x018a, "macwlan" },
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+ { 0x0195, "macwlan2" },
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+ { 0x018b, "macdsl" },
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+ { 0x01C2, "webgui_pass" },
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+ { 0x01AB, "wlan_key" },
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+};
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+
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+static struct mtd_info *tffs1, *tffs2;
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+
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+static struct tffs_id* tffs_find_id(int id)
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+{
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+ int i;
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+
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+ for (i = 0; i < ARRAY_SIZE(ids); i++)
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+ if (id == ids[i].id)
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+ return &ids[i];
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+
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+ return NULL;
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+}
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+
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+static void tffs_index(void)
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+{
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+ struct tffs_entry *E = NULL;
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+ struct tffs_entry entry;
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+ int ret, retlen;
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+
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+ while ((unsigned int) E + sizeof(struct tffs_entry) < tffs2->size) {
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+ struct tffs_id *id;
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+ int len;
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+
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+ ret = mtd_read(tffs2, (unsigned int) E, sizeof(struct tffs_entry), &retlen, (unsigned char *)&entry);
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+ if (ret)
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+ return;
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+
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+ if (entry.id == 0xffff)
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+ return;
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+
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+ id = tffs_find_id(entry.id);
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+ if (id) {
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+ id->offset = (uint32_t) E;
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+ id->len = entry.len;
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+ id->val = kzalloc(entry.len + 1, GFP_KERNEL);
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+ mtd_read(tffs2, ((unsigned int) E) + sizeof(struct tffs_entry), entry.len, &retlen, id->val);
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+
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+ }
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+ //printk(KERN_INFO "found entry at 0x%08X-> [<0x%x> %u bytes]\n", (uint32_t) E, entry.id, entry.len);
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+ if (id && id->name)
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+ printk(KERN_INFO "found entry name -> %s=%s\n", id->name, id->val);
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+
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+ len = (entry.len + 3) & ~0x03;
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+ E = (struct tffs_entry *)(((unsigned int)E) + sizeof(struct tffs_entry) + len);
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+ }
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+}
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+
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+static int __init tffs_init(void)
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+{
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+ tffs1 = get_mtd_device_nm("tffs (1)");
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+ tffs2 = get_mtd_device_nm("tffs (2)");
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+ if (IS_ERR(tffs1) || IS_ERR(tffs2))
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+ return -1;
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+
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+ tffs_index();
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+
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+ return 0;
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+}
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+late_initcall(tffs_init);
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+
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