mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-14 15:21:56 +02:00
c4105c81c0
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@7284 3c298f89-4303-0410-b956-a3cf2f4a3e73
91 lines
3.2 KiB
Diff
91 lines
3.2 KiB
Diff
diff -Nur linux-2.6.15/drivers/mtd/chips/cfi_probe.c linux-2.6.15-openwrt/drivers/mtd/chips/cfi_probe.c
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--- linux-2.6.15/drivers/mtd/chips/cfi_probe.c 2006-01-03 04:21:10.000000000 +0100
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+++ linux-2.6.15-openwrt/drivers/mtd/chips/cfi_probe.c 2006-01-10 00:32:32.000000000 +0100
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@@ -26,6 +26,74 @@
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static void print_cfi_ident(struct cfi_ident *);
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#endif
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+#if 1
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+
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+#define AMD_AUTOSEL_OFF1 0xAAA
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+#define AMD_AUTOSEL_OFF2 0x555
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+#define AMD_MANUF_ID 0x1
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+#define AMD_DEVICE_ID1 0xF6 /* T */
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+#define AMD_DEVICE_ID2 0xF9 /* B */
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+/* Foll. are definitions for Macronix Flash Part */
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+#define MCX_MANUF_ID 0xC2
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+#define MCX_DEVICE_ID1 0xA7
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+#define MCX_DEVICE_ID2 0xA8
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+/* Foll. common to both AMD and Macronix */
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+#define FACTORY_LOCKED 0x99
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+#define USER_LOCKED 0x19
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+
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+/* NOTE: AP-70/6x use BYTE mode flash access. Therefore the
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+ * lowest Addr. pin in the flash is not A0 but A-1 (A minus 1).
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+ * CPU's A0 is tied to Flash's A-1, A1 to A0 and so on. This
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+ * gives 4MB of byte-addressable mem. In byte mode, all addr
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+ * need to be multiplied by 2 (i.e compared to word mode).
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+ * NOTE: AMD_AUTOSEL_OFF1 and OFF2 are already mult. by 2
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+ * Just blindly use the addr offsets suggested in the manual
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+ * for byte mode and you'll be OK. Offs. in Table 6 need to
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+ * be mult by 2 (for getting autosel params)
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+ */
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+void
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+flash_detect(struct map_info *map, __u32 base, struct cfi_private *cfi)
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+{
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+ map_word val[3];
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+ int osf = cfi->interleave * cfi->device_type; // =2 for AP70/6x
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+ char *manuf, *part, *lock ;
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+
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+ if (osf != 1) return ;
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+
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+ cfi_send_gen_cmd(0xAA, AMD_AUTOSEL_OFF1, base, map, cfi, cfi->device_type, NULL);
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+ cfi_send_gen_cmd(0x55, AMD_AUTOSEL_OFF2, base, map, cfi, cfi->device_type, NULL);
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+ cfi_send_gen_cmd(0x90, AMD_AUTOSEL_OFF1, base, map, cfi, cfi->device_type, NULL);
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+ val[0] = map_read(map, base) ; // manuf ID
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+ val[1] = map_read(map, base+2) ; // device ID
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+ val[2] = map_read(map, base+6) ; // lock indicator
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+#if 0
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+printk("v1=0x%x v2=0x%x v3=0x%x\n", val[0], val[1], val[2]) ;
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+#endif
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+ if (val[0].x[0] == AMD_MANUF_ID) {
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+ manuf = "AMD Flash" ;
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+ if (val[1].x[0] == AMD_DEVICE_ID1)
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+ part = "AM29LV320D (Top)" ;
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+ else if (val[1].x[0] == AMD_DEVICE_ID2)
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+ part = "AM29LV320D (Bot)" ;
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+ else part = "Unknown" ;
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+ } else if (val[0].x[0] == MCX_MANUF_ID) {
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+ manuf = "Macronix Flash" ;
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+ if (val[1].x[0] == MCX_DEVICE_ID1)
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+ part = "MX29LV320A (Top)" ;
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+ else if (val[1].x[0] == MCX_DEVICE_ID2)
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+ part = "MX29LV320A (Bot)" ;
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+ else part = "Unknown" ;
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+ } else
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+ return ;
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+ if (val[2].x[0] == FACTORY_LOCKED)
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+ lock = "Factory Locked" ;
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+ else if (val[2].x[0] == USER_LOCKED)
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+ lock = "User Locked" ;
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+ else lock = "Unknown locking" ;
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+ printk("%s %s (%s)\n", manuf, part, lock) ;
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+}
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+#endif
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+
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static int cfi_probe_chip(struct map_info *map, __u32 base,
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unsigned long *chip_map, struct cfi_private *cfi);
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static int cfi_chip_setup(struct map_info *map, struct cfi_private *cfi);
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@@ -118,6 +186,10 @@
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}
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xip_disable();
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+#if 1
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+ //cfi_send_gen_cmd(0xF0, 0, base, map, cfi, cfi->device_type, NULL);
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+ flash_detect(map, base, cfi) ;
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+#endif
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cfi_send_gen_cmd(0xF0, 0, base, map, cfi, cfi->device_type, NULL);
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cfi_send_gen_cmd(0xFF, 0, base, map, cfi, cfi->device_type, NULL);
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cfi_send_gen_cmd(0x98, 0x55, base, map, cfi, cfi->device_type, NULL);
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