--- /dev/null
+/*
+ * (C) Copyright 2007
+ * Michael Schwingen, <michael@schwingen.org>
+ *
+ * based in great part on jedec_probe.c from linux kernel:
+ * (C) 2000 Red Hat. GPL'd.
+ * Occasionally maintained by Thayne Harbaugh tharbaugh at lnxi dot com
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+/* The DEBUG define must be before common to enable debugging */
+/*#define DEBUG*/
+
+#include <common.h>
+#include <asm/processor.h>
+#include <asm/io.h>
+#include <asm/byteorder.h>
+#include <environment.h>
+
+#define P_ID_AMD_STD CFI_CMDSET_AMD_LEGACY
+
+/* AMD */
+#define AM29DL800BB 0x22CB
+#define AM29DL800BT 0x224A
+
+#define AM29F400BB 0x22AB
+#define AM29F800BB 0x2258
+#define AM29F800BT 0x22D6
+#define AM29LV400BB 0x22BA
+#define AM29LV400BT 0x22B9
+#define AM29LV800BB 0x225B
+#define AM29LV800BT 0x22DA
+#define AM29LV160DT 0x22C4
+#define AM29LV160DB 0x2249
+#define AM29F017D 0x003D
+#define AM29F016D 0x00AD
+#define AM29F080 0x00D5
+#define AM29F040 0x00A4
+#define AM29LV040B 0x004F
+#define AM29F032B 0x0041
+#define AM29F002T 0x00B0
+
+/* SST */
+#define SST39LF800 0x2781
+#define SST39LF160 0x2782
+#define SST39VF1601 0x234b
+#define SST39LF512 0x00D4
+#define SST39LF010 0x00D5
+#define SST39LF020 0x00D6
+#define SST39LF040 0x00D7
+#define SST39SF010A 0x00B5
+#define SST39SF020A 0x00B6
+
+/* STM */
+#define STM29F400BB 0x00D6
+
+/* MXIC */
+#define MX29LV040 0x004F
+
+/* WINBOND */
+#define W39L040A 0x00D6
+
+/* AMIC */
+#define A29L040 0x0092
+
+/* EON */
+#define EN29LV040A 0x004F
+
+/*
+ * Unlock address sets for AMD command sets.
+ * Intel command sets use the MTD_UADDR_UNNECESSARY.
+ * Each identifier, except MTD_UADDR_UNNECESSARY, and
+ * MTD_UADDR_NO_SUPPORT must be defined below in unlock_addrs[].
+ * MTD_UADDR_NOT_SUPPORTED must be 0 so that structure
+ * initialization need not require initializing all of the
+ * unlock addresses for all bit widths.
+ */
+enum uaddr {
+ MTD_UADDR_NOT_SUPPORTED = 0, /* data width not supported */
+ MTD_UADDR_0x0555_0x02AA,
+ MTD_UADDR_0x0555_0x0AAA,
+ MTD_UADDR_0x5555_0x2AAA,
+ MTD_UADDR_0x0AAA_0x0555,
+ MTD_UADDR_DONT_CARE, /* Requires an arbitrary address */
+ MTD_UADDR_UNNECESSARY, /* Does not require any address */
+};
+
+
+struct unlock_addr {
+ u32 addr1;
+ u32 addr2;
+};
+
+
+/*
+ * I don't like the fact that the first entry in unlock_addrs[]
+ * exists, but is for MTD_UADDR_NOT_SUPPORTED - and, therefore,
+ * should not be used. The problem is that structures with
+ * initializers have extra fields initialized to 0. It is _very_
+ * desireable to have the unlock address entries for unsupported
+ * data widths automatically initialized - that means that
+ * MTD_UADDR_NOT_SUPPORTED must be 0 and the first entry here
+ * must go unused.
+ */
+static const struct unlock_addr unlock_addrs[] = {
+ [MTD_UADDR_NOT_SUPPORTED] = {
+ .addr1 = 0xffff,
+ .addr2 = 0xffff
+ },
+
+ [MTD_UADDR_0x0555_0x02AA] = {
+ .addr1 = 0x0555,
+ .addr2 = 0x02aa
+ },
+
+ [MTD_UADDR_0x0555_0x0AAA] = {
+ .addr1 = 0x0555,
+ .addr2 = 0x0aaa
+ },
+
+ [MTD_UADDR_0x5555_0x2AAA] = {
+ .addr1 = 0x5555,
+ .addr2 = 0x2aaa
+ },
+
+ [MTD_UADDR_0x0AAA_0x0555] = {
+ .addr1 = 0x0AAA,
+ .addr2 = 0x0555
+ },
+
+ [MTD_UADDR_DONT_CARE] = {
+ .addr1 = 0x0000, /* Doesn't matter which address */
+ .addr2 = 0x0000 /* is used - must be last entry */
+ },
+
+ [MTD_UADDR_UNNECESSARY] = {
+ .addr1 = 0x0000,
+ .addr2 = 0x0000
+ }
+};
+
+
+struct amd_flash_info {
+ const __u16 mfr_id;
+ const __u16 dev_id;
+ const char *name;
+ const int DevSize;
+ const int NumEraseRegions;
+ const int CmdSet;
+ const __u8 uaddr[4]; /* unlock addrs for 8, 16, 32, 64 */
+ const ulong regions[6];
+};
+
+#define ERASEINFO(size,blocks) (size<<8)|(blocks-1)
+
+#define SIZE_64KiB 16
+#define SIZE_128KiB 17
+#define SIZE_256KiB 18
+#define SIZE_512KiB 19
+#define SIZE_1MiB 20
+#define SIZE_2MiB 21
+#define SIZE_4MiB 22
+#define SIZE_8MiB 23
+
+static const struct amd_flash_info jedec_table[] = {
+#ifdef CONFIG_SYS_FLASH_LEGACY_256Kx8
+ {
+ .mfr_id = (u16)SST_MANUFACT,
+ .dev_id = SST39LF020,
+ .name = "SST 39LF020",
+ .uaddr = {
+ [0] = MTD_UADDR_0x5555_0x2AAA /* x8 */
+ },
+ .DevSize = SIZE_256KiB,
+ .CmdSet = P_ID_AMD_STD,
+ .NumEraseRegions= 1,
+ .regions = {
+ ERASEINFO(0x01000,64),
+ }
+ },
+#endif
+#ifdef CONFIG_SYS_FLASH_LEGACY_512Kx8
+ {
+ .mfr_id = (u16)AMD_MANUFACT,
+ .dev_id = AM29LV040B,
+ .name = "AMD AM29LV040B",
+ .uaddr = {
+ [0] = MTD_UADDR_0x0555_0x02AA /* x8 */
+ },
+ .DevSize = SIZE_512KiB,
+ .CmdSet = P_ID_AMD_STD,
+ .NumEraseRegions= 1,
+ .regions = {
+ ERASEINFO(0x10000,8),
+ }
+ },
+ {
+ .mfr_id = (u16)SST_MANUFACT,
+ .dev_id = SST39LF040,
+ .name = "SST 39LF040",
+ .uaddr = {
+ [0] = MTD_UADDR_0x5555_0x2AAA /* x8 */
+ },
+ .DevSize = SIZE_512KiB,
+ .CmdSet = P_ID_AMD_STD,
+ .NumEraseRegions= 1,
+ .regions = {
+ ERASEINFO(0x01000,128),
+ }
+ },
+ {
+ .mfr_id = (u16)STM_MANUFACT,
+ .dev_id = STM_ID_M29W040B,
+ .name = "ST Micro M29W040B",
+ .uaddr = {
+ [0] = MTD_UADDR_0x0555_0x02AA /* x8 */
+ },
+ .DevSize = SIZE_512KiB,
+ .CmdSet = P_ID_AMD_STD,
+ .NumEraseRegions= 1,
+ .regions = {
+ 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
+ {
+ .mfr_id = (u16)AMD_MANUFACT,
+ .dev_id = AM29F400BB,
+ .name = "AMD AM29F400BB",
+ .uaddr = {
+ [1] = MTD_UADDR_0x0555_0x02AA /* x16 */
+ },
+ .DevSize = SIZE_512KiB,
+ .CmdSet = CFI_CMDSET_AMD_LEGACY,
+ .NumEraseRegions= 4,
+ .regions = {
+ ERASEINFO(0x04000, 1),
+ ERASEINFO(0x02000, 2),
+ ERASEINFO(0x08000, 1),
+ ERASEINFO(0x10000, 7),
+ }
+ },
+ {
+ .mfr_id = (u16)AMD_MANUFACT,
+ .dev_id = AM29LV400BB,
+ .name = "AMD AM29LV400BB",
+ .uaddr = {
+ [1] = MTD_UADDR_0x0555_0x02AA /* x16 */
+ },
+ .DevSize = SIZE_512KiB,
+ .CmdSet = CFI_CMDSET_AMD_LEGACY,
+ .NumEraseRegions= 4,
+ .regions = {
+ ERASEINFO(0x04000,1),
+ ERASEINFO(0x02000,2),
+ ERASEINFO(0x08000,1),
+ ERASEINFO(0x10000,7),
+ }
+ },
+ {
+ .mfr_id = (u16)AMD_MANUFACT,
+ .dev_id = AM29LV800BB,
+ .name = "AMD AM29LV800BB",
+ .uaddr = {
+ [1] = MTD_UADDR_0x0555_0x02AA /* x16 */
+ },
+ .DevSize = SIZE_1MiB,
+ .CmdSet = CFI_CMDSET_AMD_LEGACY,
+ .NumEraseRegions= 4,
+ .regions = {
+ ERASEINFO(0x04000, 1),
+ ERASEINFO(0x02000, 2),
+ ERASEINFO(0x08000, 1),
+ ERASEINFO(0x10000, 15),
+ }
+ },
+ {
+ .mfr_id = (u16)STM_MANUFACT,
+ .dev_id = STM29F400BB,
+ .name = "ST Micro M29F400BB",
+ .uaddr = {
+ [1] = MTD_UADDR_0x0555_0x02AA /* x16 */
+ },
+ .DevSize = SIZE_512KiB,
+ .CmdSet = CFI_CMDSET_AMD_LEGACY,
+ .NumEraseRegions = 4,
+ .regions = {
+ ERASEINFO(0x04000, 1),
+ ERASEINFO(0x02000, 2),
+ ERASEINFO(0x08000, 1),
+ ERASEINFO(0x10000, 7),
+ }
+ },
+#endif
+};
+
+static inline void fill_info(flash_info_t *info, const struct amd_flash_info *jedec_entry, ulong base)
+{
+ int i,j;
+ int sect_cnt;
+ int size_ratio;
+ int total_size;
+ enum uaddr uaddr_idx;
+
+ size_ratio = info->portwidth / info->chipwidth;
+
+ debug("Found JEDEC Flash: %s\n", jedec_entry->name);
+ info->vendor = jedec_entry->CmdSet;
+ /* Todo: do we need device-specific timeouts? */
+ info->erase_blk_tout = 30000;
+ info->buffer_write_tout = 1000;
+ info->write_tout = 100;
+ info->name = jedec_entry->name;
+
+ /* copy unlock addresses from device table to CFI info struct. This
+ is just here because the addresses are in the table anyway - if
+ the flash is not detected due to wrong unlock addresses,
+ flash_detect_legacy would have to try all of them before we even
+ get here. */
+ switch(info->chipwidth) {
+ case FLASH_CFI_8BIT:
+ uaddr_idx = jedec_entry->uaddr[0];
+ break;
+ case FLASH_CFI_16BIT:
+ uaddr_idx = jedec_entry->uaddr[1];
+ break;
+ case FLASH_CFI_32BIT:
+ uaddr_idx = jedec_entry->uaddr[2];
+ break;
+ default:
+ uaddr_idx = MTD_UADDR_NOT_SUPPORTED;
+ break;
+ }
+
+ debug("unlock address index %d\n", uaddr_idx);
+ info->addr_unlock1 = unlock_addrs[uaddr_idx].addr1;
+ info->addr_unlock2 = unlock_addrs[uaddr_idx].addr2;
+ debug("unlock addresses are 0x%lx/0x%lx\n",
+ info->addr_unlock1, info->addr_unlock2);
+
+ sect_cnt = 0;
+ total_size = 0;
+ for (i = 0; i < jedec_entry->NumEraseRegions; i++) {
+ ulong erase_region_size = jedec_entry->regions[i] >> 8;
+ ulong erase_region_count = (jedec_entry->regions[i] & 0xff) + 1;
+
+ total_size += erase_region_size * erase_region_count;
+ debug("erase_region_count = %ld erase_region_size = %ld\n",
+ erase_region_count, erase_region_size);
+ for (j = 0; j < erase_region_count; j++) {
+ if (sect_cnt >= CONFIG_SYS_MAX_FLASH_SECT) {
+ printf("ERROR: too many flash sectors\n");
+ break;
+ }
+ info->start[sect_cnt] = base;
+ base += (erase_region_size * size_ratio);
+ sect_cnt++;
+ }
+ }
+ info->sector_count = sect_cnt;
+ info->size = total_size * size_ratio;
+}
+
+/*-----------------------------------------------------------------------
+ * match jedec ids against table. If a match is found, fill flash_info entry
+ */
+int jedec_flash_match(flash_info_t *info, ulong base)
+{
+ int ret = 0;
+ int i;
+ ulong mask = 0xFFFF;
+ if (info->chipwidth == 1)
+ mask = 0xFF;
+
+ for (i = 0; i < ARRAY_SIZE(jedec_table); i++) {
+ if ((jedec_table[i].mfr_id & mask) == (info->manufacturer_id & mask) &&
+ (jedec_table[i].dev_id & mask) == (info->device_id & mask)) {
+ fill_info(info, &jedec_table[i], base);
+ ret = 1;
+ break;
+ }
+ }
+ return ret;
+}
Code Review / kvmfornfv.git / blobdiff