[U-Boot] [PATCH] Add some second source legacy flash chips 256x8

[Niklaus Giger]

Signed-off-by: Niklaus Giger <niklaus.giger at member.fsf.org>
---

We tested some boot flashes as possible second source.
As some had ids above 0x7f, we had to implement JEDEC JEP106Z in cfi_flash.c.
I now that I just missed the merge window, but the patches are not urgent
and I was away for a three week

 drivers/mtd/cfi_flash.c   |   16 +++++++++--
 drivers/mtd/jedec_flash.c |   67 +++++++++++++++++++++++++++++++++++++++++++++
 include/flash.h           |   10 ++++++-
 3 files changed, 89 insertions(+), 4 deletions(-)

diff --git a/drivers/mtd/cfi_flash.c b/drivers/mtd/cfi_flash.c
index 81ac5d3..4cd0116 100644
--- a/drivers/mtd/cfi_flash.c
+++ b/drivers/mtd/cfi_flash.c
@@ -106,6 +106,8 @@
 #define ATM_CMD_SOFTLOCK_START		0x80
 #define ATM_CMD_LOCK_SECT		0x40

+#define FLASH_CONTINUATION_CODE         0x7F
+
 #define FLASH_OFFSET_MANUFACTURER_ID	0x00
 #define FLASH_OFFSET_DEVICE_ID		0x01
 #define FLASH_OFFSET_DEVICE_ID2		0x0E
@@ -1541,13 +1543,21 @@ static int cmdset_intel_init(flash_info_t *info, struct cfi_qry *qry)

 static void cmdset_amd_read_jedec_ids(flash_info_t *info)
 {
-	flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
+	ushort bankId = 0;
+	uchar  manuId;
+
+        flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
 	flash_unlock_seq(info, 0);
 	flash_write_cmd(info, 0, info->addr_unlock1, FLASH_CMD_READ_ID);
 	udelay(1000); /* some flash are slow to respond */

-	info->manufacturer_id = flash_read_uchar (info,
-					FLASH_OFFSET_MANUFACTURER_ID);
+	manuId = flash_read_uchar (info, FLASH_OFFSET_MANUFACTURER_ID);
+	/* JEDEC JEP106Z specifies ID codes up to bank 7 */
+	while(manuId == FLASH_CONTINUATION_CODE && bankId < 0x800) {
+		bankId += 0x100;
+		manuId = flash_read_uchar (info, bankId | FLASH_OFFSET_MANUFACTURER_ID);
+	}
+	info->manufacturer_id = manuId;

 	switch (info->chipwidth){
 	case FLASH_CFI_8BIT:
diff --git a/drivers/mtd/jedec_flash.c b/drivers/mtd/jedec_flash.c
index e48acec..488bbec 100644
--- a/drivers/mtd/jedec_flash.c
+++ b/drivers/mtd/jedec_flash.c
@@ -68,6 +68,17 @@
 #define SST39SF010A	0x00B5
 #define SST39SF020A	0x00B6

+/* MXIC */
+#define MX29LV040	0x004F
+
+/* WINBOND */
+#define W39L040A        0x00D6
+
+/* AMIC */
+#define A29L040         0x0092
+
+/* EON */
+#define EN29LV040A      0x004F

 /*
  * Unlock address sets for AMD command sets.
@@ -225,6 +236,62 @@ static const struct amd_flash_info jedec_table[] = {
 			ERASEINFO(0x10000,8),
 		}
 	},
+	{
+		.mfr_id		= (u16)MX_MANUFACT,
+		.dev_id		= MX29LV040,
+		.name		= "MXIC MX29LV040",
+		.uaddr		= {
+			[0] = MTD_UADDR_0x0555_0x02AA /* x8 */
+		},
+		.DevSize	= SIZE_512KiB,
+		.CmdSet		= P_ID_AMD_STD,
+		.NumEraseRegions= 1,
+		.regions	= {
+			ERASEINFO(0x10000,8),
+		}
+	},
+	{
+		.mfr_id		= (u16)WINB_MANUFACT,
+		.dev_id		= W39L040A,
+		.name		= "WINBOND W39L040A",
+		.uaddr		= {
+                        [0] = MTD_UADDR_0x5555_0x2AAA /* x8 */
+		},
+		.DevSize	= SIZE_512KiB,
+		.CmdSet		= P_ID_AMD_STD,
+		.NumEraseRegions= 1,
+		.regions	= {
+			ERASEINFO(0x10000,8),
+		}
+	},
+	{
+		.mfr_id		= (u16)AMIC_MANUFACT,
+		.dev_id		= A29L040,
+		.name		= "AMIC A29L040",
+		.uaddr		= {
+			[0] = MTD_UADDR_0x0555_0x02AA /* x8 */
+		},
+		.DevSize	= SIZE_512KiB,
+		.CmdSet		= P_ID_AMD_STD,
+		.NumEraseRegions= 1,
+		.regions	= {
+			ERASEINFO(0x10000,8),
+		}
+	},
+	{
+		.mfr_id		= (u16)EON_MANUFACT,
+		.dev_id		= EN29LV040A,
+		.name		= "EON EN29LV040A",
+		.uaddr		= {
+			[0] = MTD_UADDR_0x0555_0x02AA /* x8 */
+		},
+		.DevSize	= SIZE_512KiB,
+		.CmdSet		= P_ID_AMD_STD,
+		.NumEraseRegions= 1,
+		.regions	= {
+			ERASEINFO(0x10000,8),
+		}
+	},
 #endif
 #ifdef CONFIG_SYS_FLASH_LEGACY_512Kx16
 	{
diff --git a/include/flash.h b/include/flash.h
index b016162..8feca1b 100644
--- a/include/flash.h
+++ b/include/flash.h
@@ -46,7 +46,7 @@ typedef struct {
 	ushort	cmd_reset;		/* vendor specific reset command	*/
 	ushort	interface;		/* used for x8/x16 adjustments		*/
 	ushort	legacy_unlock;		/* support Intel legacy (un)locking	*/
-	uchar	manufacturer_id;	/* manufacturer id			*/
+	ushort	manufacturer_id;	/* manufacturer id			*/
 	ushort	device_id;		/* device id				*/
 	ushort	device_id2;		/* extended device id			*/
 	ushort	ext_addr;		/* extended query table address		*/
@@ -154,6 +154,7 @@ extern flash_info_t *flash_get_info(ulong base);
  * Device IDs
  */

+/* Manufacturers inside bank 0 have ids like 0x00xx00xx */
 #define AMD_MANUFACT	0x00010001	/* AMD	   manuf. ID in D23..D16, D7..D0 */
 #define FUJ_MANUFACT	0x00040004	/* FUJITSU manuf. ID in D23..D16, D7..D0 */
 #define ATM_MANUFACT	0x001F001F	/* ATMEL */
@@ -166,6 +167,13 @@ extern flash_info_t *flash_get_info(ulong base);
 #define TOSH_MANUFACT	0x00980098	/* TOSHIBA manuf. ID in D23..D16, D7..D0 */
 #define MT2_MANUFACT	0x002C002C	/* alternate MICRON manufacturer ID*/
 #define EXCEL_MANUFACT	0x004A004A	/* Excel Semiconductor			*/
+#define AMIC_MANUFACT	0x00370037	/* AMIC    manuf. ID in D23..D16, D7..D0 */
+#define WINB_MANUFACT	0x00DA00DA	/* Winbond manuf. ID in D23..D16, D7..D0 */
+
+/* Manufacturers inside bank 1 have ids like 0x01xx01xx */
+#define EON_MANUFACT	0x011C011C	/* EON     manuf. ID in D23..D16, D7..D0 */
+
+/* Manufacturers inside bank 2 have ids like 0x02xx02xx */

 					/* Micron Technologies (INTEL compat.)	*/
 #define MT_ID_28F400_T	0x44704470	/* 28F400B3 ID ( 4 M, top boot sector)	*/
--
1.6.3.3