--- /dev/null
+/*
+ * (C) Copyright 2001
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * (C) Copyright 2002
+ * Gregory E. Allen, gallen@arlut.utexas.edu
+ * Matthew E. Karger, karger@arlut.utexas.edu
+ * Applied Research Laboratories, The University of Texas at Austin
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <mpc824x.h>
+#include <asm/processor.h>
+
+#define ROM_CS0_START 0xFF800000
+#define ROM_CS1_START 0xFF000000
+
+#if defined(CONFIG_ENV_IS_IN_FLASH)
+# ifndef CONFIG_ENV_ADDR
+# define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET)
+# endif
+# ifndef CONFIG_ENV_SIZE
+# define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE
+# endif
+# ifndef CONFIG_ENV_SECT_SIZE
+# define CONFIG_ENV_SECT_SIZE CONFIG_ENV_SIZE
+# endif
+#endif
+
+#define FLASH_BANK_SIZE ((uint)(16 * 1024 * 1024)) /* max 16Mbyte */
+#define MAIN_SECT_SIZE 0x10000
+#define SECT_SIZE_32KB 0x8000
+#define SECT_SIZE_8KB 0x2000
+
+flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
+
+static int write_word (flash_info_t * info, ulong dest, ulong data);
+#if 0
+static void write_via_fpu (vu_long * addr, ulong * data);
+#endif
+static __inline__ unsigned long get_msr (void);
+static __inline__ void set_msr (unsigned long msr);
+
+/*flash command address offsets*/
+#define ADDR0 (0x555)
+#define ADDR1 (0xAAA)
+#define ADDR3 (0x001)
+
+#define FLASH_WORD_SIZE unsigned char
+
+/*---------------------------------------------------------------------*/
+/*#define DEBUG_FLASH 1 */
+
+/*---------------------------------------------------------------------*/
+
+unsigned long flash_init (void)
+{
+ int i; /* flash bank counter */
+ int j; /* flash device sector counter */
+ int k; /* flash size calculation loop counter */
+ int N; /* pow(2,N) is flash size, but we don't have <math.h> */
+ ulong total_size = 0, device_size = 1;
+ unsigned char manuf_id, device_id;
+
+ for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
+ vu_char *addr = (vu_char *) (CONFIG_SYS_FLASH_BASE + i * FLASH_BANK_SIZE);
+
+ addr[0x555] = 0xAA; /* get manuf/device info command */
+ addr[0x2AA] = 0x55; /* 3-cycle command */
+ addr[0x555] = 0x90;
+
+ manuf_id = addr[0]; /* read back manuf/device info */
+ device_id = addr[1];
+
+ addr[0x55] = 0x98; /* CFI command */
+ N = addr[0x27]; /* read back device_size = pow(2,N) */
+
+ for (k = 0; k < N; k++) /* calculate device_size = pow(2,N) */
+ device_size *= 2;
+
+ flash_info[i].size = device_size;
+ flash_info[i].sector_count = CONFIG_SYS_MAX_FLASH_SECT;
+
+#if defined DEBUG_FLASH
+ printf ("manuf_id = %x, device_id = %x\n", manuf_id, device_id);
+#endif
+ /* find out what kind of flash we are using */
+ if ((manuf_id == (uchar) (AMD_MANUFACT))
+ && (device_id == AMD_ID_LV033C)) {
+ flash_info[i].flash_id =
+ ((FLASH_MAN_AMD & FLASH_VENDMASK) << 16) |
+ (FLASH_AM033C & FLASH_TYPEMASK);
+
+ /* set individual sector start addresses */
+ for (j = 0; j < flash_info[i].sector_count; j++) {
+ flash_info[i].start[j] =
+ (CONFIG_SYS_FLASH_BASE + i * FLASH_BANK_SIZE +
+ j * MAIN_SECT_SIZE);
+ }
+ }
+
+ else if ((manuf_id == (uchar) (AMD_MANUFACT)) &&
+ (device_id == AMD_ID_LV116DT)) {
+ flash_info[i].flash_id =
+ ((FLASH_MAN_AMD & FLASH_VENDMASK) << 16) |
+ (FLASH_AM160T & FLASH_TYPEMASK);
+
+ /* set individual sector start addresses */
+ for (j = 0; j < flash_info[i].sector_count; j++) {
+ flash_info[i].start[j] =
+ (CONFIG_SYS_FLASH_BASE + i * FLASH_BANK_SIZE +
+ j * MAIN_SECT_SIZE);
+
+ if (j < (CONFIG_SYS_MAX_FLASH_SECT - 3)) {
+ flash_info[i].start[j] =
+ (CONFIG_SYS_FLASH_BASE + i * FLASH_BANK_SIZE +
+ j * MAIN_SECT_SIZE);
+ } else if (j == (CONFIG_SYS_MAX_FLASH_SECT - 3)) {
+ flash_info[i].start[j] =
+ (flash_info[i].start[j - 1] + SECT_SIZE_32KB);
+
+ } else {
+ flash_info[i].start[j] =
+ (flash_info[i].start[j - 1] + SECT_SIZE_8KB);
+ }
+ }
+ }
+
+ else {
+ flash_info[i].flash_id = FLASH_UNKNOWN;
+ addr[0] = 0xFF;
+ goto Done;
+ }
+
+#if defined DEBUG_FLASH
+ printf ("flash_id = 0x%08lX\n", flash_info[i].flash_id);
+#endif
+
+ addr[0] = 0xFF;
+
+ memset (flash_info[i].protect, 0, CONFIG_SYS_MAX_FLASH_SECT);
+
+ total_size += flash_info[i].size;
+ }
+
+ /* Protect monitor and environment sectors
+ */
+#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE
+ flash_protect (FLAG_PROTECT_SET, CONFIG_SYS_MONITOR_BASE,
+ CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1,
+ &flash_info[0]);
+#endif
+
+#if defined(CONFIG_ENV_IS_IN_FLASH) && defined(CONFIG_ENV_ADDR)
+ flash_protect (FLAG_PROTECT_SET, CONFIG_ENV_ADDR,
+ CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1, &flash_info[0]);
+#endif
+
+ Done:
+ return total_size;
+}
+
+/*-----------------------------------------------------------------------
+ */
+void flash_print_info (flash_info_t * info)
+{
+ static const char unk[] = "Unknown";
+ const char *mfct = unk, *type = unk;
+ unsigned int i;
+
+ if (info->flash_id != FLASH_UNKNOWN) {
+ switch (info->flash_id & FLASH_VENDMASK) {
+ case FLASH_MAN_AMD:
+ mfct = "AMD";
+ break;
+ case FLASH_MAN_FUJ:
+ mfct = "FUJITSU";
+ break;
+ case FLASH_MAN_STM:
+ mfct = "STM";
+ break;
+ case FLASH_MAN_SST:
+ mfct = "SST";
+ break;
+ case FLASH_MAN_BM:
+ mfct = "Bright Microelectonics";
+ break;
+ case FLASH_MAN_INTEL:
+ mfct = "Intel";
+ break;
+ }
+
+ switch (info->flash_id & FLASH_TYPEMASK) {
+ case FLASH_AM033C:
+ type = "AM29LV033C (32 Mbit, uniform sector size)";
+ break;
+ case FLASH_AM160T:
+ type = "AM29LV160T (16 Mbit, top boot sector)";
+ break;
+ case FLASH_AM040:
+ type = "AM29F040B (512K * 8, uniform sector size)";
+ break;
+ case FLASH_AM400B:
+ type = "AM29LV400B (4 Mbit, bottom boot sect)";
+ break;
+ case FLASH_AM400T:
+ type = "AM29LV400T (4 Mbit, top boot sector)";
+ break;
+ case FLASH_AM800B:
+ type = "AM29LV800B (8 Mbit, bottom boot sect)";
+ break;
+ case FLASH_AM800T:
+ type = "AM29LV800T (8 Mbit, top boot sector)";
+ break;
+ case FLASH_AM320B:
+ type = "AM29LV320B (32 Mbit, bottom boot sect)";
+ break;
+ case FLASH_AM320T:
+ type = "AM29LV320T (32 Mbit, top boot sector)";
+ break;
+ case FLASH_STM800AB:
+ type = "M29W800AB (8 Mbit, bottom boot sect)";
+ break;
+ case FLASH_SST800A:
+ type = "SST39LF/VF800 (8 Mbit, uniform sector size)";
+ break;
+ case FLASH_SST160A:
+ type = "SST39LF/VF160 (16 Mbit, uniform sector size)";
+ break;
+ }
+ }
+
+ printf ("\n Brand: %s Type: %s\n"
+ " Size: %lu KB in %d Sectors\n",
+ mfct, type, info->size >> 10, info->sector_count);
+
+ printf (" Sector Start Addresses:");
+
+ for (i = 0; i < info->sector_count; i++) {
+ unsigned long size;
+ unsigned int erased;
+ unsigned long *flash = (unsigned long *) info->start[i];
+
+ /*
+ * Check if whole sector is erased
+ */
+ size = (i != (info->sector_count - 1)) ?
+ (info->start[i + 1] - info->start[i]) >> 2 :
+ (info->start[0] + info->size - info->start[i]) >> 2;
+
+ for (flash = (unsigned long *) info->start[i], erased = 1;
+ (flash != (unsigned long *) info->start[i] + size) && erased;
+ flash++)
+ erased = *flash == ~0x0UL;
+
+ printf ("%s %08lX %s %s",
+ (i % 5) ? "" : "\n ",
+ info->start[i],
+ erased ? "E" : " ", info->protect[i] ? "RO" : " ");
+ }
+
+ puts ("\n");
+ return;
+}
+
+/*-----------------------------------------------------------------------
+ */
+
+int flash_erase (flash_info_t * info, int s_first, int s_last)
+{
+ volatile FLASH_WORD_SIZE *addr = (FLASH_WORD_SIZE *) (info->start[0]);
+ int flag, prot, sect, l_sect;
+ ulong start, now, last;
+ unsigned char sh8b;
+
+ if ((s_first < 0) || (s_first > s_last)) {
+ if (info->flash_id == FLASH_UNKNOWN) {
+ printf ("- missing\n");
+ } else {
+ printf ("- no sectors to erase\n");
+ }
+ return 1;
+ }
+
+ if ((info->flash_id == FLASH_UNKNOWN) ||
+ (info->flash_id > (FLASH_MAN_STM | FLASH_AMD_COMP))) {
+ printf ("Can't erase unknown flash type - aborted\n");
+ return 1;
+ }
+
+ prot = 0;
+ for (sect = s_first; sect <= s_last; ++sect) {
+ if (info->protect[sect]) {
+ prot++;
+ }
+ }
+
+ if (prot) {
+ printf ("- Warning: %d protected sectors will not be erased!\n",
+ prot);
+ } else {
+ printf ("\n");
+ }
+
+ l_sect = -1;
+
+ /* Check the ROM CS */
+ if ((info->start[0] >= ROM_CS1_START)
+ && (info->start[0] < ROM_CS0_START))
+ sh8b = 3;
+ else
+ sh8b = 0;
+
+ /* Disable interrupts which might cause a timeout here */
+ flag = disable_interrupts ();
+
+ addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00AA00AA;
+ addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE) 0x00550055;
+ addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00800080;
+ addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00AA00AA;
+ addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE) 0x00550055;
+
+ /* Start erase on unprotected sectors */
+ for (sect = s_first; sect <= s_last; sect++) {
+ if (info->protect[sect] == 0) { /* not protected */
+ addr = (FLASH_WORD_SIZE *) (info->start[0] + ((info->
+ start[sect] -
+ info->
+ start[0]) <<
+ sh8b));
+
+ if (info->flash_id & FLASH_MAN_SST) {
+ addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00AA00AA;
+ addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE) 0x00550055;
+ addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00800080;
+ 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)) > CONFIG_SYS_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) > CONFIG_SYS_FLASH_WRITE_TOUT) {
+ return (1);
+ }
+ }
+ }
+
+ return (0);
+}
+
+/*-----------------------------------------------------------------------
+ */
+#if 0
+static void write_via_fpu (vu_long * addr, ulong * data)
+{
+ __asm__ __volatile__ ("lfd 1, 0(%0)"::"r" (data));
+ __asm__ __volatile__ ("stfd 1, 0(%0)"::"r" (addr));
+}
+#endif
+
+/*-----------------------------------------------------------------------
+ */
+static __inline__ unsigned long get_msr (void)
+{
+ unsigned long msr;
+
+ __asm__ __volatile__ ("mfmsr %0":"=r" (msr):);
+
+ return msr;
+}
+
+static __inline__ void set_msr (unsigned long msr)
+{
+ __asm__ __volatile__ ("mtmsr %0"::"r" (msr));
+}
Code Review / kvmfornfv.git / blobdiff