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-rw-r--r--board/RPXClassic/RPXClassic.c290
-rw-r--r--board/RPXClassic/config.mk29
-rw-r--r--board/RPXClassic/flash.c447
3 files changed, 766 insertions, 0 deletions
diff --git a/board/RPXClassic/RPXClassic.c b/board/RPXClassic/RPXClassic.c
new file mode 100644
index 0000000..4d2100b
--- /dev/null
+++ b/board/RPXClassic/RPXClassic.c
@@ -0,0 +1,290 @@
+/*
+ * (C) Copyright 2001
+ * Stäubli Faverges - <www.staubli.com>
+ * Pierre AUBERT p.aubert@staubli.com
+ * U-Boot port on RPXClassic LF (CLLF_BW31) board
+ *
+ * (C) Copyright 2000
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <i2c.h>
+#include <config.h>
+#include <mpc8xx.h>
+
+/* ------------------------------------------------------------------------- */
+
+static long int dram_size (long int, long int *, long int);
+static unsigned char aschex_to_byte (unsigned char *cp);
+
+/* ------------------------------------------------------------------------- */
+
+#define _NOT_USED_ 0xFFFFCC25
+
+const uint sdram_table[] =
+{
+ /*
+ * Single Read. (Offset 00h in UPMA RAM)
+ */
+ 0xCFFFCC24, 0x0FFFCC04, 0X0CAFCC04, 0X03AFCC08,
+ 0x3FBFCC27, /* last */
+ _NOT_USED_, _NOT_USED_, _NOT_USED_,
+
+ /*
+ * Burst Read. (Offset 08h in UPMA RAM)
+ */
+ 0xCFFFCC24, 0x0FFFCC04, 0x0CAFCC84, 0x03AFCC88,
+ 0x3FBFCC27, /* last */
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ _NOT_USED_, _NOT_USED_, _NOT_USED_,
+
+ /*
+ * Single Write. (Offset 18h in UPMA RAM)
+ */
+ 0xCFFFCC24, 0x0FFFCC04, 0x0CFFCC04, 0x03FFCC00,
+ 0x3FFFCC27, /* last */
+ _NOT_USED_, _NOT_USED_, _NOT_USED_,
+
+ /*
+ * Burst Write. (Offset 20h in UPMA RAM)
+ */
+ 0xCFFFCC24, 0x0FFFCC04, 0x0CFFCC80, 0x03FFCC8C,
+ 0x0CFFCC00, 0x33FFCC27, /* last */
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ _NOT_USED_, _NOT_USED_,
+
+ /*
+ * Refresh. (Offset 30h in UPMA RAM)
+ */
+ 0xC0FFCC24, 0x03FFCC24, 0x0FFFCC24, 0x0FFFCC24,
+ 0x3FFFCC27, /* last */
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ _NOT_USED_, _NOT_USED_, _NOT_USED_,
+
+ /*
+ * Exception. (Offset 3Ch in UPMA RAM)
+ */
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_
+};
+
+/* ------------------------------------------------------------------------- */
+
+
+/*
+ * Check Board Identity:
+ */
+
+int checkboard (void)
+{
+ puts ("Board: RPXClassic\n");
+ return (0);
+}
+
+/*-----------------------------------------------------------------------------
+ * board_get_enetaddr -- Read the MAC Address in the I2C EEPROM
+ *-----------------------------------------------------------------------------
+ */
+void board_get_enetaddr (uchar * enet)
+{
+ int i;
+ char buff[256], *cp;
+
+ /* Initialize I2C */
+ i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
+
+ /* Read 256 bytes in EEPROM */
+ i2c_read (0x54, 0, 1, buff, 128);
+ i2c_read (0x54, 128, 1, buff + 128, 128);
+
+ /* Retrieve MAC address in buffer (key EA) */
+ for (cp = buff;;) {
+ if (cp[0] == 'E' && cp[1] == 'A') {
+ cp += 3;
+ /* Read MAC address */
+ for (i = 0; i < 6; i++, cp += 2) {
+ enet[i] = aschex_to_byte (cp);
+ }
+ }
+ /* Scan to the end of the record */
+ while ((*cp != '\n') && (*cp != 0xff)) {
+ cp++;
+ }
+ /* If the next character is a \n, 0 or ff, we are done. */
+ cp++;
+ if ((*cp == '\n') || (*cp == 0) || (*cp == 0xff))
+ break;
+ }
+
+#ifdef CONFIG_FEC_ENET
+ /* The MAC address is the same as normal ethernet except the 3rd byte */
+ /* (See the E.P. Planet Core Overview manual */
+ enet[3] |= 0x80;
+
+ /* Validate the fast ethernet tranceiver */
+ *((volatile uchar *) BCSR2) &= ~BCSR2_MIICTL;
+ *((volatile uchar *) BCSR2) &= ~BCSR2_MIIPWRDWN;
+ *((volatile uchar *) BCSR2) |= BCSR2_MIIRST;
+ *((volatile uchar *) BCSR2) |= BCSR2_MIIPWRDWN;
+#endif
+
+ printf ("MAC address = %02x:%02x:%02x:%02x:%02x:%02x\n",
+ enet[0], enet[1], enet[2], enet[3], enet[4], enet[5]);
+
+}
+
+void rpxclassic_init (void)
+{
+ /* Enable NVRAM */
+ *((uchar *) BCSR0) |= BCSR0_ENNVRAM;
+
+}
+
+/* ------------------------------------------------------------------------- */
+
+long int initdram (int board_type)
+{
+ volatile immap_t *immap = (immap_t *) CFG_IMMR;
+ volatile memctl8xx_t *memctl = &immap->im_memctl;
+ long int size10;
+
+ upmconfig (UPMA, (uint *) sdram_table,
+ sizeof (sdram_table) / sizeof (uint));
+
+ /* Refresh clock prescalar */
+ memctl->memc_mptpr = CFG_MPTPR;
+
+ memctl->memc_mar = 0x00000000;
+
+ /* Map controller banks 1 to the SDRAM bank */
+ memctl->memc_or1 = CFG_OR1_PRELIM;
+ memctl->memc_br1 = CFG_BR1_PRELIM;
+
+ memctl->memc_mamr = CFG_MAMR_10COL & (~(MAMR_PTAE)); /* no refresh yet */
+
+ udelay (200);
+
+ /* perform SDRAM initializsation sequence */
+
+ memctl->memc_mcr = 0x80002230; /* SDRAM bank 0 - refresh twice */
+ udelay (1);
+
+ memctl->memc_mamr |= MAMR_PTAE; /* enable refresh */
+
+ udelay (1000);
+
+ /* Check Bank 0 Memory Size
+ * try 10 column mode
+ */
+
+ size10 = dram_size (CFG_MAMR_10COL, (ulong *) SDRAM_BASE_PRELIM,
+ SDRAM_MAX_SIZE);
+
+ return (size10);
+}
+
+/* ------------------------------------------------------------------------- */
+
+/*
+ * Check memory range for valid RAM. A simple memory test determines
+ * the actually available RAM size between addresses `base' and
+ * `base + maxsize'. Some (not all) hardware errors are detected:
+ * - short between address lines
+ * - short between data lines
+ */
+
+static long int dram_size (long int mamr_value, long int *base, long int maxsize)
+{
+ volatile immap_t *immap = (immap_t *) CFG_IMMR;
+ volatile memctl8xx_t *memctl = &immap->im_memctl;
+ volatile long int *addr;
+ ulong cnt, val;
+ ulong save[32]; /* to make test non-destructive */
+ unsigned char i = 0;
+
+ memctl->memc_mamr = mamr_value;
+
+ for (cnt = maxsize / sizeof (long); cnt > 0; cnt >>= 1) {
+ addr = base + cnt; /* pointer arith! */
+
+ save[i++] = *addr;
+ *addr = ~cnt;
+ }
+
+ /* write 0 to base address */
+ addr = base;
+ save[i] = *addr;
+ *addr = 0;
+
+ /* check at base address */
+ if ((val = *addr) != 0) {
+ *addr = save[i];
+ return (0);
+ }
+
+ for (cnt = 1; cnt <= maxsize / sizeof (long); cnt <<= 1) {
+ addr = base + cnt; /* pointer arith! */
+
+ val = *addr;
+ *addr = save[--i];
+
+ if (val != (~cnt)) {
+ return (cnt * sizeof (long));
+ }
+ }
+ return (maxsize);
+}
+static unsigned char aschex_to_byte (unsigned char *cp)
+{
+ u_char byte, c;
+
+ c = *cp++;
+
+ if ((c >= 'A') && (c <= 'F')) {
+ c -= 'A';
+ c += 10;
+ } else if ((c >= 'a') && (c <= 'f')) {
+ c -= 'a';
+ c += 10;
+ } else {
+ c -= '0';
+ }
+
+ byte = c * 16;
+
+ c = *cp;
+
+ if ((c >= 'A') && (c <= 'F')) {
+ c -= 'A';
+ c += 10;
+ } else if ((c >= 'a') && (c <= 'f')) {
+ c -= 'a';
+ c += 10;
+ } else {
+ c -= '0';
+ }
+
+ byte += c;
+
+ return (byte);
+}
diff --git a/board/RPXClassic/config.mk b/board/RPXClassic/config.mk
new file mode 100644
index 0000000..ae455e1
--- /dev/null
+++ b/board/RPXClassic/config.mk
@@ -0,0 +1,29 @@
+#
+# (C) Copyright 2001
+# Stäubli Faverges - <www.staubli.com>
+# Pierre AUBERT p.aubert@staubli.com
+# U-Boot port on RPXClassic LF (CLLF_BW31) board
+#
+# (C) Copyright 2000
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+TEXT_BASE = 0xff000000
diff --git a/board/RPXClassic/flash.c b/board/RPXClassic/flash.c
new file mode 100644
index 0000000..6293497
--- /dev/null
+++ b/board/RPXClassic/flash.c
@@ -0,0 +1,447 @@
+/*
+ * (C) Copyright 2001
+ * Stäubli Faverges - <www.staubli.com>
+ * Pierre AUBERT p.aubert@staubli.com
+ * U-Boot port on RPXClassic LF (CLLF_BW31) board
+ *
+ * RPXClassic uses Am29DL323B flash memory with 2 banks
+ *
+ *
+ * (C) Copyright 2000
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+
+#include <common.h>
+#include <mpc8xx.h>
+
+flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
+
+/*-----------------------------------------------------------------------
+ * Functions
+ */
+static ulong flash_get_size (vu_long *addr, flash_info_t *info);
+static int write_word (flash_info_t *info, ulong dest, ulong data);
+static void flash_get_offsets (ulong base, flash_info_t *info);
+
+/*-----------------------------------------------------------------------
+ */
+
+unsigned long flash_init (void)
+{
+ unsigned long size_b0 ;
+ int i;
+
+ /* Init: no FLASHes known */
+ for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) {
+ flash_info[i].flash_id = FLASH_UNKNOWN;
+ }
+
+ size_b0 = flash_get_size((vu_long *)CFG_FLASH_BASE, &flash_info[0]);
+
+
+ flash_get_offsets (CFG_FLASH_BASE, &flash_info[0]);
+
+#if CFG_MONITOR_BASE >= CFG_FLASH_BASE
+ /* monitor protection ON by default */
+ flash_protect(FLAG_PROTECT_SET,
+ CFG_MONITOR_BASE,
+ CFG_MONITOR_BASE+CFG_MONITOR_LEN-1,
+ &flash_info[0]);
+#endif
+
+ flash_info[0].size = size_b0;
+
+ return (size_b0);
+}
+
+/*-----------------------------------------------------------------------
+ */
+static void flash_get_offsets (ulong base, flash_info_t *info)
+{
+ int i;
+
+ if (info->flash_id & FLASH_BTYPE) {
+ /* set sector offsets for bottom boot block type */
+ info->start[0] = base + 0x00000000;
+ info->start[1] = base + 0x00008000;
+ info->start[2] = base + 0x00010000;
+ info->start[3] = base + 0x00018000;
+ info->start[4] = base + 0x00020000;
+ info->start[5] = base + 0x00028000;
+ info->start[6] = base + 0x00030000;
+ info->start[7] = base + 0x00038000;
+ for (i = 8; i < info->sector_count; i++) {
+ info->start[i] = base + ((i-7) * 0x00040000) ;
+ }
+ }
+}
+
+/*-----------------------------------------------------------------------
+ */
+void flash_print_info (flash_info_t *info)
+{
+ int i;
+
+ if (info->flash_id == FLASH_UNKNOWN) {
+ printf ("missing or unknown FLASH type\n");
+ return;
+ }
+
+ switch (info->flash_id & FLASH_VENDMASK) {
+ case FLASH_MAN_AMD: printf ("AMD "); break;
+ default: printf ("Unknown Vendor "); break;
+ }
+
+ switch (info->flash_id & FLASH_TYPEMASK) {
+ case FLASH_AMDL323B:
+ printf ("AMDL323DB (16 Mbytes, bottom boot sect)\n");
+ break;
+ default:
+ printf ("Unknown Chip Type\n");
+ break;
+ }
+
+ printf (" Size: %ld MB in %d Sectors\n",
+ info->size >> 20, info->sector_count);
+
+ printf (" Sector Start Addresses:");
+ for (i=0; i<info->sector_count; ++i) {
+ if ((i % 5) == 0)
+ printf ("\n ");
+ printf (" %08lX%s",
+ info->start[i],
+ info->protect[i] ? " (RO)" : " "
+ );
+ }
+ printf ("\n");
+}
+
+/*-----------------------------------------------------------------------
+ */
+
+
+/*-----------------------------------------------------------------------
+ */
+
+/*
+ * The following code cannot be run from FLASH!
+ */
+
+static ulong flash_get_size (vu_long *addr, flash_info_t *info)
+{
+ short i;
+ ulong value;
+ ulong base = (ulong)addr;
+
+ /* Reset flash componeny */
+ addr [0] = 0xf0f0f0f0;
+
+ /* Write auto select command: read Manufacturer ID */
+ addr[0xAAA] = 0xAAAAAAAA ;
+ addr[0x555] = 0x55555555 ;
+ addr[0xAAA] = 0x90909090 ;
+
+ value = addr[0] ;
+
+ switch (value & 0x00FF00FF) {
+ case AMD_MANUFACT:
+ info->flash_id = FLASH_MAN_AMD;
+ break;
+ default:
+ info->flash_id = FLASH_UNKNOWN;
+ info->sector_count = 0;
+ info->size = 0;
+ return (0); /* no or unknown flash */
+ }
+
+ value = addr[2] ; /* device ID */
+
+ switch (value & 0x00FF00FF) {
+ case (AMD_ID_DL323B & 0x00FF00FF):
+ info->flash_id += FLASH_AMDL323B;
+ info->sector_count = 71;
+ info->size = 0x01000000; /* 16 Mb */
+
+ break;
+ default:
+ info->flash_id = FLASH_UNKNOWN;
+ return (0); /* => no or unknown flash */
+
+ }
+ /* set up sector start address table */
+ /* set sector offsets for bottom boot block type */
+ info->start[0] = base + 0x00000000;
+ info->start[1] = base + 0x00008000;
+ info->start[2] = base + 0x00010000;
+ info->start[3] = base + 0x00018000;
+ info->start[4] = base + 0x00020000;
+ info->start[5] = base + 0x00028000;
+ info->start[6] = base + 0x00030000;
+ info->start[7] = base + 0x00038000;
+ for (i = 8; i < info->sector_count; i++) {
+ info->start[i] = base + ((i-7) * 0x00040000) ;
+ }
+
+ /* check for protected sectors */
+ for (i = 0; i < 23; i++) {
+ /* read sector protection at sector address, (A7 .. A0) = 0x02 */
+ /* D0 = 1 if protected */
+ addr = (volatile unsigned long *)(info->start[i]);
+ info->protect[i] = addr[4] & 1 ;
+ }
+ /* Check for protected sectors in the 2nd bank */
+ addr[0x100AAA] = 0xAAAAAAAA ;
+ addr[0x100555] = 0x55555555 ;
+ addr[0x100AAA] = 0x90909090 ;
+
+ for (i = 23; i < info->sector_count; i++) {
+ /* read sector protection at sector address, (A7 .. A0) = 0x02 */
+ /* D0 = 1 if protected */
+ addr = (volatile unsigned long *)(info->start[i]);
+ info->protect[i] = addr[4] & 1 ;
+ }
+
+ /*
+ * Prevent writes to uninitialized FLASH.
+ */
+ if (info->flash_id != FLASH_UNKNOWN) {
+ addr = (volatile unsigned long *)info->start[0];
+
+ *addr = 0xF0F0F0F0; /* reset bank 1 */
+ addr = (volatile unsigned long *)info->start[23];
+
+ *addr = 0xF0F0F0F0; /* reset bank 2 */
+
+ }
+
+ return (info->size);
+}
+
+
+/*-----------------------------------------------------------------------
+ */
+
+int flash_erase (flash_info_t *info, int s_first, int s_last)
+{
+ vu_long *addr = (vu_long*)(info->start[0]);
+ int flag, prot, sect, l_sect;
+ ulong start, now, last;
+
+ 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_AMD_COMP)) {
+ printf ("Can't erase unknown flash type %08lx - aborted\n",
+ info->flash_id);
+ 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;
+
+ /* Disable interrupts which might cause a timeout here */
+ flag = disable_interrupts();
+
+ addr[0xAAA] = 0xAAAAAAAA;
+ addr[0x555] = 0x55555555;
+ addr[0xAAA] = 0x80808080;
+ addr[0xAAA] = 0xAAAAAAAA;
+ addr[0x555] = 0x55555555;
+
+ /* Start erase on unprotected sectors */
+ for (sect = s_first; sect<=s_last; sect++) {
+ if (info->protect[sect] == 0) { /* not protected */
+ addr = (vu_long *)(info->start[sect]) ;
+ addr[0] = 0x30303030 ;
+ 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 = (vu_long *)(info->start[l_sect]);
+ while ((addr[0] & 0x80808080) != 0x80808080) {
+ 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 */
+ putc ('.');
+ last = now;
+ }
+ }
+
+DONE:
+ /* reset to read mode */
+ addr = (vu_long *)info->start[0];
+ addr[0] = 0xF0F0F0F0; /* 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)
+{
+ vu_long *addr = (vu_long *)(info->start[0]);
+ ulong start;
+ int flag;
+
+ /* Check if Flash is (sufficiently) erased */
+ if ((*((vu_long *)dest) & data) != data) {
+ return (2);
+ }
+ /* Disable interrupts which might cause a timeout here */
+ flag = disable_interrupts();
+
+ addr[0xAAA] = 0xAAAAAAAA;
+ addr[0x555] = 0x55555555;
+ addr[0xAAA] = 0xA0A0A0A0;
+
+ *((vu_long *)dest) = data;
+
+ /* re-enable interrupts if necessary */
+ if (flag)
+ enable_interrupts();
+
+ /* data polling for D7 */
+ start = get_timer (0);
+ while ((*((vu_long *)dest) & 0x80808080) != (data & 0x80808080)) {
+ if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
+ return (1);
+ }
+ }
+ return (0);
+}
+
+/*-----------------------------------------------------------------------
+ */
generated by cgit v1.1 at 2024-11-05 06:19:47 +0000