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@@ -0,0 +1,575 @@
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+/*
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+ * (C) Copyright 2004
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+ * Yusdi Santoso, Adaptec Inc., yusdi_santoso@adaptec.com
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+ *
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+ * (C) Copyright 2000-2005
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+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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+ *
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+ * See file CREDITS for list of people who contributed to this
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+ * project.
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+ *
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+ * This program is free software; you can redistribute it and/or
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+ * modify it under the terms of the GNU General Public License as
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+ * published by the Free Software Foundation; either version 2 of
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+ * the License, or (at your option) any later version.
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+ *
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+ * This program is distributed in the hope that it will be useful,
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+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+ * GNU General Public License for more details.
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+ *
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+ * You should have received a copy of the GNU General Public License
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+ * along with this program; if not, write to the Free Software
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+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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+ * MA 02111-1307 USA
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+ */
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+
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+#include <common.h>
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+#include <mpc824x.h>
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+#include <asm/processor.h>
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+#include <asm/pci_io.h>
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+#include <w83c553f.h>
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+
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+#define ROM_CS0_START 0xFF800000
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+#define ROM_CS1_START 0xFF000000
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+
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+flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
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+
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+#if defined(CFG_ENV_IS_IN_FLASH)
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+# ifndef CFG_ENV_ADDR
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+# define CFG_ENV_ADDR (CFG_FLASH_BASE + CFG_ENV_OFFSET)
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+# endif
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+# ifndef CFG_ENV_SIZE
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+# define CFG_ENV_SIZE CFG_ENV_SECT_SIZE
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+# endif
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+# ifndef CFG_ENV_SECT_SIZE
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+# define CFG_ENV_SECT_SIZE CFG_ENV_SIZE
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+# endif
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+#endif
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+
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+/*-----------------------------------------------------------------------
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+ * Functions
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+ */
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+static int write_word (flash_info_t *info, ulong dest, ulong data);
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+
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+/*flash command address offsets*/
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+
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+#define ADDR0 (0xAAA)
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+#define ADDR1 (0x555)
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+#define ADDR3 (0x001)
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+
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+#define FLASH_WORD_SIZE unsigned char
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+
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+/*-----------------------------------------------------------------------
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+ */
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+
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+static unsigned long flash_id (unsigned char mfct, unsigned char chip)
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+ __attribute__ ((const));
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+
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+typedef struct {
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+ FLASH_WORD_SIZE extval;
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+ unsigned short intval;
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+} map_entry;
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+
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+static unsigned long flash_id (unsigned char mfct, unsigned char chip)
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+{
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+ static const map_entry mfct_map[] = {
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+ {(FLASH_WORD_SIZE) AMD_MANUFACT,
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+ (unsigned short) ((unsigned long) FLASH_MAN_AMD >> 16)},
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+ {(FLASH_WORD_SIZE) FUJ_MANUFACT,
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+ (unsigned short) ((unsigned long) FLASH_MAN_FUJ >> 16)},
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+ {(FLASH_WORD_SIZE) STM_MANUFACT,
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+ (unsigned short) ((unsigned long) FLASH_MAN_STM >> 16)},
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+ {(FLASH_WORD_SIZE) MT_MANUFACT,
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+ (unsigned short) ((unsigned long) FLASH_MAN_MT >> 16)},
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+ {(FLASH_WORD_SIZE) INTEL_MANUFACT,
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+ (unsigned short) ((unsigned long) FLASH_MAN_INTEL >> 16)},
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+ {(FLASH_WORD_SIZE) INTEL_ALT_MANU,
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+ (unsigned short) ((unsigned long) FLASH_MAN_INTEL >> 16)}
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+ };
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+
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+ static const map_entry chip_map[] = {
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+ {AMD_ID_F040B, FLASH_AM040},
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+ {(FLASH_WORD_SIZE) STM_ID_x800AB, FLASH_STM800AB}
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+ };
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+
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+ const map_entry *p;
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+ unsigned long result = FLASH_UNKNOWN;
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+
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+ /* find chip id */
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+ for (p = &chip_map[0];
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+ p < &chip_map[sizeof chip_map / sizeof chip_map[0]]; p++)
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+ if (p->extval == chip) {
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+ result = FLASH_VENDMASK | p->intval;
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+ break;
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+ }
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+
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+ /* find vendor id */
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+ for (p = &mfct_map[0];
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+ p < &mfct_map[sizeof mfct_map / sizeof mfct_map[0]]; p++)
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+ if (p->extval == mfct) {
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+ result &= ~FLASH_VENDMASK;
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+ result |= (unsigned long) p->intval << 16;
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+ break;
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+ }
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+
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+ return result;
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+}
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+
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+unsigned long flash_init (void)
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+{
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+ unsigned long i;
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+ unsigned char j;
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+ static const ulong flash_banks[] = CFG_FLASH_BANKS;
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+
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+ /* Init: no FLASHes known */
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+ for (i = 0; i < CFG_MAX_FLASH_BANKS; i++) {
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+ flash_info_t *const pflinfo = &flash_info[i];
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+
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+ pflinfo->flash_id = FLASH_UNKNOWN;
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+ pflinfo->size = 0;
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+ pflinfo->sector_count = 0;
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+ }
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+
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+ /* Enable writes to Hidden Dragon flash */
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+ {
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+ register unsigned char temp;
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+
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+ CONFIG_READ_BYTE (CFG_WINBOND_ISA_CFG_ADDR + WINBOND_CSCR,
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+ temp);
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+ temp &= ~0x20; /* clear BIOSWP bit */
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+ CONFIG_WRITE_BYTE (CFG_WINBOND_ISA_CFG_ADDR + WINBOND_CSCR,
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+ temp);
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+ }
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+
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+ for (i = 0; i < sizeof flash_banks / sizeof flash_banks[0]; i++) {
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+ flash_info_t *const pflinfo = &flash_info[i];
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+ const unsigned long base_address = flash_banks[i];
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+ volatile FLASH_WORD_SIZE *const flash =
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+ (FLASH_WORD_SIZE *) base_address;
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+
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+ flash[0xAAA << (3 * i)] = 0xaa;
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+ flash[0x555 << (3 * i)] = 0x55;
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+ flash[0xAAA << (3 * i)] = 0x90;
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+ __asm__ __volatile__ ("sync");
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+
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+ pflinfo->flash_id =
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+ flash_id (flash[0x0], flash[0x2 + 14 * i]);
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+
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+ switch (pflinfo->flash_id & FLASH_TYPEMASK) {
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+ case FLASH_AM040:
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+ pflinfo->size = 0x00080000;
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+ pflinfo->sector_count = 8;
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+ for (j = 0; j < 8; j++) {
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+ pflinfo->start[j] =
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+ base_address + 0x00010000 * j;
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+ pflinfo->protect[j] = flash[(j << 16) | 0x2];
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+ }
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+ break;
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+ case FLASH_STM800AB:
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+ pflinfo->size = 0x00100000;
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+ pflinfo->sector_count = 19;
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+ pflinfo->start[0] = base_address;
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+ pflinfo->start[1] = base_address + 0x4000;
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+ pflinfo->start[2] = base_address + 0x6000;
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+ pflinfo->start[3] = base_address + 0x8000;
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+ for (j = 1; j < 16; j++) {
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+ pflinfo->start[j + 3] =
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+ base_address + 0x00010000 * j;
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+ }
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+ break;
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+ default:
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+ /* The chip used is not listed in flash_id
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+ TODO: Change this to explicitly detect the flash type
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+ */
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+ {
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+ int sector_addr = base_address;
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+
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+ pflinfo->size = 0x00200000;
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+ pflinfo->sector_count = 35;
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+ pflinfo->start[0] = sector_addr;
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+ sector_addr += 0x4000; /* 16K */
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+ pflinfo->start[1] = sector_addr;
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+ sector_addr += 0x2000; /* 8K */
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+ pflinfo->start[2] = sector_addr;
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+ sector_addr += 0x2000; /* 8K */
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+ pflinfo->start[3] = sector_addr;
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+ sector_addr += 0x8000; /* 32K */
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+
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+ for (j = 4; j < 35; j++) {
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+ pflinfo->start[j] = sector_addr;
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+ sector_addr += 0x10000; /* 64K */
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+ }
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+ }
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+ break;
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+ }
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+ /* Protect monitor and environment sectors
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+ */
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+#if CFG_MONITOR_BASE >= CFG_FLASH_BASE
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+ flash_protect (FLAG_PROTECT_SET,
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+ CFG_MONITOR_BASE,
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+ CFG_MONITOR_BASE + monitor_flash_len - 1,
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+ &flash_info[0]);
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+#endif
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+
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+#if (CFG_ENV_IS_IN_FLASH == 1) && defined(CFG_ENV_ADDR)
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+ flash_protect (FLAG_PROTECT_SET,
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+ CFG_ENV_ADDR,
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+ CFG_ENV_ADDR + CFG_ENV_SIZE - 1,
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+ &flash_info[0]);
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+#endif
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+
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+ /* reset device to read mode */
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+ flash[0x0000] = 0xf0;
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+ __asm__ __volatile__ ("sync");
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+ }
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+
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+ /* only have 1 bank */
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+ return flash_info[0].size;
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+}
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+
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+/*-----------------------------------------------------------------------
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+ */
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+void flash_print_info (flash_info_t * info)
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+{
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+ static const char unk[] = "Unknown";
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+ const char *mfct = unk, *type = unk;
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+ unsigned int i;
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+
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+ if (info->flash_id != FLASH_UNKNOWN) {
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+ switch (info->flash_id & FLASH_VENDMASK) {
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+ case FLASH_MAN_AMD:
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+ mfct = "AMD";
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+ break;
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+ case FLASH_MAN_FUJ:
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+ mfct = "FUJITSU";
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+ break;
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+ case FLASH_MAN_STM:
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+ mfct = "STM";
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+ break;
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+ case FLASH_MAN_SST:
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+ mfct = "SST";
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+ break;
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+ case FLASH_MAN_BM:
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+ mfct = "Bright Microelectonics";
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+ break;
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+ case FLASH_MAN_INTEL:
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+ mfct = "Intel";
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+ break;
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+ }
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+
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+ switch (info->flash_id & FLASH_TYPEMASK) {
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+ case FLASH_AM040:
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+ type = "AM29F040B (512K * 8, uniform sector size)";
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+ break;
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+ case FLASH_AM400B:
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+ type = "AM29LV400B (4 Mbit, bottom boot sect)";
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+ break;
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+ case FLASH_AM400T:
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+ type = "AM29LV400T (4 Mbit, top boot sector)";
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+ break;
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+ case FLASH_AM800B:
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+ type = "AM29LV800B (8 Mbit, bottom boot sect)";
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+ break;
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+ case FLASH_AM800T:
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+ type = "AM29LV800T (8 Mbit, top boot sector)";
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+ break;
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+ case FLASH_AM160T:
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+ type = "AM29LV160T (16 Mbit, top boot sector)";
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+ break;
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+ case FLASH_AM320B:
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+ type = "AM29LV320B (32 Mbit, bottom boot sect)";
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+ break;
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+ case FLASH_AM320T:
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+ type = "AM29LV320T (32 Mbit, top boot sector)";
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+ break;
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+ case FLASH_STM800AB:
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+ type = "M29W800AB (8 Mbit, bottom boot sect)";
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+ break;
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+ case FLASH_SST800A:
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+ type = "SST39LF/VF800 (8 Mbit, uniform sector size)";
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+ break;
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+ case FLASH_SST160A:
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+ type = "SST39LF/VF160 (16 Mbit, uniform sector size)";
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+ break;
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+ }
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+ }
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+
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+ printf ("\n Brand: %s Type: %s\n"
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+ " Size: %lu KB in %d Sectors\n",
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+ mfct, type, info->size >> 10, info->sector_count);
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+
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+ printf (" Sector Start Addresses:");
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+
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+ for (i = 0; i < info->sector_count; i++) {
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+ unsigned long size;
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+ unsigned int erased;
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+ unsigned long *flash = (unsigned long *) info->start[i];
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+
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+ /*
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+ * Check if whole sector is erased
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+ */
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+ size = (i != (info->sector_count - 1)) ?
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+ (info->start[i + 1] - info->start[i]) >> 2 :
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+ (info->start[0] + info->size - info->start[i]) >> 2;
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+
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+ for (flash = (unsigned long *) info->start[i], erased = 1;
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+ (flash != (unsigned long *) info->start[i] + size)
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+ && erased; flash++)
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+ erased = *flash == ~0x0UL;
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+
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+ printf ("%s %08lX %s %s",
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+ (i % 5) ? "" : "\n ",
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+ info->start[i],
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+ erased ? "E" : " ", info->protect[i] ? "RO" : " ");
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+ }
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+
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+ puts ("\n");
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+ return;
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+}
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+
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+int flash_erase (flash_info_t * info, int s_first, int s_last)
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+{
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+ volatile FLASH_WORD_SIZE *addr = (FLASH_WORD_SIZE *) (info->start[0]);
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+ int flag, prot, sect, l_sect;
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+ ulong start, now, last;
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+ unsigned char sh8b;
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+
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+ if ((s_first < 0) || (s_first > s_last)) {
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+ if (info->flash_id == FLASH_UNKNOWN) {
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+ printf ("- missing\n");
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+ } else {
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+ printf ("- no sectors to erase\n");
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+ }
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+ return 1;
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+ }
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+
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+ if ((info->flash_id == FLASH_UNKNOWN) ||
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+ (info->flash_id > (FLASH_MAN_STM | FLASH_AMD_COMP))) {
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+ printf ("Can't erase unknown flash type - aborted\n");
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+ return 1;
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+ }
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+
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+ prot = 0;
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+ for (sect = s_first; sect <= s_last; ++sect) {
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+ if (info->protect[sect]) {
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+ prot++;
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+ }
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+ }
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+
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+ if (prot) {
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+ printf ("- Warning: %d protected sectors will not be erased!\n", prot);
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+ } else {
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+ printf ("\n");
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+ }
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+
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+ l_sect = -1;
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+
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+ /* Check the ROM CS */
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+ if ((info->start[0] >= ROM_CS1_START)
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+ && (info->start[0] < ROM_CS0_START))
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+ sh8b = 3;
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+ else
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+ sh8b = 0;
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+
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+ /* Disable interrupts which might cause a timeout here */
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+ flag = disable_interrupts ();
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+
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+ addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00AA00AA;
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+ addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE) 0x00550055;
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+ addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00800080;
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+ addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00AA00AA;
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+ addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE) 0x00550055;
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+
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+ /* Start erase on unprotected sectors */
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+ for (sect = s_first; sect <= s_last; sect++) {
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+ if (info->protect[sect] == 0) { /* not protected */
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+ addr = (FLASH_WORD_SIZE *) (info->start[0] +
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+ ((info->start[sect] -
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+ info->start[0]) << sh8b));
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+ if (info->flash_id & FLASH_MAN_SST) {
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+ addr[ADDR0 << sh8b] =
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+ (FLASH_WORD_SIZE) 0x00AA00AA;
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+ addr[ADDR1 << sh8b] =
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+ (FLASH_WORD_SIZE) 0x00550055;
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+ addr[ADDR0 << sh8b] =
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+ (FLASH_WORD_SIZE) 0x00800080;
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+ addr[ADDR0 << sh8b] =
|
|
|
+ (FLASH_WORD_SIZE) 0x00AA00AA;
|
|
|
+ addr[ADDR1 << sh8b] =
|
|
|
+ (FLASH_WORD_SIZE) 0x00550055;
|
|
|
+ addr[0] = (FLASH_WORD_SIZE) 0x00500050; /* block erase */
|
|
|
+ udelay (30000); /* wait 30 ms */
|
|
|
+ } else
|
|
|
+ addr[0] = (FLASH_WORD_SIZE) 0x00300030; /* sector erase */
|
|
|
+ l_sect = sect;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /* re-enable interrupts if necessary */
|
|
|
+ if (flag)
|
|
|
+ enable_interrupts ();
|
|
|
+
|
|
|
+ /* wait at least 80us - let's wait 1 ms */
|
|
|
+ udelay (1000);
|
|
|
+
|
|
|
+ /*
|
|
|
+ * We wait for the last triggered sector
|
|
|
+ */
|
|
|
+ if (l_sect < 0)
|
|
|
+ goto DONE;
|
|
|
+
|
|
|
+ start = get_timer (0);
|
|
|
+ last = start;
|
|
|
+ addr = (FLASH_WORD_SIZE *) (info->start[0] + ((info->start[l_sect] -
|
|
|
+ info->
|
|
|
+ start[0]) << sh8b));
|
|
|
+ while ((addr[0] & (FLASH_WORD_SIZE) 0x00800080) !=
|
|
|
+ (FLASH_WORD_SIZE) 0x00800080) {
|
|
|
+ if ((now = get_timer (start)) > CFG_FLASH_ERASE_TOUT) {
|
|
|
+ printf ("Timeout\n");
|
|
|
+ return 1;
|
|
|
+ }
|
|
|
+ /* show that we're waiting */
|
|
|
+ if ((now - last) > 1000) { /* every second */
|
|
|
+ serial_putc ('.');
|
|
|
+ last = now;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ DONE:
|
|
|
+ /* reset to read mode */
|
|
|
+ addr = (FLASH_WORD_SIZE *) info->start[0];
|
|
|
+ addr[0] = (FLASH_WORD_SIZE) 0x00F000F0; /* reset bank */
|
|
|
+
|
|
|
+ printf (" done\n");
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+/*-----------------------------------------------------------------------
|
|
|
+ * Copy memory to flash, returns:
|
|
|
+ * 0 - OK
|
|
|
+ * 1 - write timeout
|
|
|
+ * 2 - Flash not erased
|
|
|
+ */
|
|
|
+
|
|
|
+int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
|
|
|
+{
|
|
|
+ ulong cp, wp, data;
|
|
|
+ int i, l, rc;
|
|
|
+
|
|
|
+ wp = (addr & ~3); /* get lower word aligned address */
|
|
|
+
|
|
|
+ /*
|
|
|
+ * handle unaligned start bytes
|
|
|
+ */
|
|
|
+ if ((l = addr - wp) != 0) {
|
|
|
+ data = 0;
|
|
|
+ for (i = 0, cp = wp; i < l; ++i, ++cp) {
|
|
|
+ data = (data << 8) | (*(uchar *) cp);
|
|
|
+ }
|
|
|
+ for (; i < 4 && cnt > 0; ++i) {
|
|
|
+ data = (data << 8) | *src++;
|
|
|
+ --cnt;
|
|
|
+ ++cp;
|
|
|
+ }
|
|
|
+ for (; cnt == 0 && i < 4; ++i, ++cp) {
|
|
|
+ data = (data << 8) | (*(uchar *) cp);
|
|
|
+ }
|
|
|
+
|
|
|
+ if ((rc = write_word (info, wp, data)) != 0) {
|
|
|
+ return (rc);
|
|
|
+ }
|
|
|
+ wp += 4;
|
|
|
+ }
|
|
|
+
|
|
|
+ /*
|
|
|
+ * handle word aligned part
|
|
|
+ */
|
|
|
+ while (cnt >= 4) {
|
|
|
+ data = 0;
|
|
|
+ for (i = 0; i < 4; ++i) {
|
|
|
+ data = (data << 8) | *src++;
|
|
|
+ }
|
|
|
+ if ((rc = write_word (info, wp, data)) != 0) {
|
|
|
+ return (rc);
|
|
|
+ }
|
|
|
+ wp += 4;
|
|
|
+ cnt -= 4;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (cnt == 0) {
|
|
|
+ return (0);
|
|
|
+ }
|
|
|
+
|
|
|
+ /*
|
|
|
+ * handle unaligned tail bytes
|
|
|
+ */
|
|
|
+ data = 0;
|
|
|
+ for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) {
|
|
|
+ data = (data << 8) | *src++;
|
|
|
+ --cnt;
|
|
|
+ }
|
|
|
+ for (; i < 4; ++i, ++cp) {
|
|
|
+ data = (data << 8) | (*(uchar *) cp);
|
|
|
+ }
|
|
|
+
|
|
|
+ return (write_word (info, wp, data));
|
|
|
+}
|
|
|
+
|
|
|
+/*-----------------------------------------------------------------------
|
|
|
+ * Write a word to Flash, returns:
|
|
|
+ * 0 - OK
|
|
|
+ * 1 - write timeout
|
|
|
+ * 2 - Flash not erased
|
|
|
+ */
|
|
|
+static int write_word (flash_info_t * info, ulong dest, ulong data)
|
|
|
+{
|
|
|
+ volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *) info->start[0];
|
|
|
+ volatile FLASH_WORD_SIZE *dest2;
|
|
|
+ volatile FLASH_WORD_SIZE *data2 = (FLASH_WORD_SIZE *) & data;
|
|
|
+ ulong start;
|
|
|
+ int flag;
|
|
|
+ int i;
|
|
|
+ unsigned char sh8b;
|
|
|
+
|
|
|
+ /* Check the ROM CS */
|
|
|
+ if ((info->start[0] >= ROM_CS1_START)
|
|
|
+ && (info->start[0] < ROM_CS0_START))
|
|
|
+ sh8b = 3;
|
|
|
+ else
|
|
|
+ sh8b = 0;
|
|
|
+
|
|
|
+ dest2 = (FLASH_WORD_SIZE *) (((dest - info->start[0]) << sh8b) +
|
|
|
+ info->start[0]);
|
|
|
+
|
|
|
+ /* Check if Flash is (sufficiently) erased */
|
|
|
+ if ((*dest2 & (FLASH_WORD_SIZE) data) != (FLASH_WORD_SIZE) data) {
|
|
|
+ return (2);
|
|
|
+ }
|
|
|
+ /* Disable interrupts which might cause a timeout here */
|
|
|
+ flag = disable_interrupts ();
|
|
|
+
|
|
|
+ for (i = 0; i < 4 / sizeof (FLASH_WORD_SIZE); i++) {
|
|
|
+ addr2[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00AA00AA;
|
|
|
+ addr2[ADDR1 << sh8b] = (FLASH_WORD_SIZE) 0x00550055;
|
|
|
+ addr2[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00A000A0;
|
|
|
+
|
|
|
+ dest2[i << sh8b] = data2[i];
|
|
|
+
|
|
|
+ /* re-enable interrupts if necessary */
|
|
|
+ if (flag)
|
|
|
+ enable_interrupts ();
|
|
|
+
|
|
|
+ /* data polling for D7 */
|
|
|
+ start = get_timer (0);
|
|
|
+ while ((dest2[i << sh8b] & (FLASH_WORD_SIZE) 0x00800080) !=
|
|
|
+ (data2[i] & (FLASH_WORD_SIZE) 0x00800080)) {
|
|
|
+ if (get_timer (start) > CFG_FLASH_WRITE_TOUT) {
|
|
|
+ return (1);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ return (0);
|
|
|
+}
|
wdenk