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-rw-r--r--board/mp2usb/flash.c552
1 files changed, 0 insertions, 552 deletions
diff --git a/board/mp2usb/flash.c b/board/mp2usb/flash.c
deleted file mode 100644
index 21a8ef9..0000000
--- a/board/mp2usb/flash.c
+++ /dev/null
@@ -1,552 +0,0 @@
-/*
- * (C) Copyright 2001
- * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net
- *
- * (C) Copyright 2001
- * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * Modified for the MP2USB by (C) Copyright 2005 Eric Benard
- * ebenard@eukrea.com
- *
- * 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 <linux/byteorder/swab.h>
-
-#define CONFIG_SYS_MAX_FLASH_BANKS 1
-#define PHYS_FLASH_SECT_SIZE 0x00020000 /* 128 KB sectors (x1) */
-
-flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
-
-#define FLASH_PORT_WIDTH ushort
-#define FLASH_PORT_WIDTHV vu_short
-#define SWAP(x) __swab16(x)
-
-#define FPW FLASH_PORT_WIDTH
-#define FPWV FLASH_PORT_WIDTHV
-
-#define mb() __asm__ __volatile__ ("" : : : "memory")
-
-/* Intel-compatible flash commands */
-#define INTEL_PROGRAM 0x00100010
-#define INTEL_ERASE 0x00200020
-#define INTEL_PROG 0x00400040
-#define INTEL_CLEAR 0x00500050
-#define INTEL_LOCKBIT 0x00600060
-#define INTEL_PROTECT 0x00010001
-#define INTEL_STATUS 0x00700070
-#define INTEL_READID 0x00900090
-#define INTEL_SUSPEND 0x00B000B0
-#define INTEL_CONFIRM 0x00D000D0
-#define INTEL_RESET 0xFFFFFFFF
-
-/* Intel-compatible flash status bits */
-#define INTEL_FINISHED 0x00800080
-#define INTEL_OK 0x00800080
-
-/*-----------------------------------------------------------------------
- * Functions
- */
-static ulong flash_get_size (FPW *addr, flash_info_t *info);
-static int write_data (flash_info_t *info, ulong dest, FPW data);
-static void flash_get_offsets (ulong base, flash_info_t *info);
-void inline spin_wheel (void);
-
-/*-----------------------------------------------------------------------
- */
-
-unsigned long flash_init (void)
-{
- int i;
- ulong size = 0;
-
- for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
- switch (i) {
- case 0:
- flash_get_size ((FPW *) PHYS_FLASH_1, &flash_info[i]);
- flash_get_offsets (PHYS_FLASH_1, &flash_info[i]);
- break;
- default:
- panic ("configured too many flash banks!\n");
- break;
- }
- size += flash_info[i].size;
- }
-
- /* Protect monitor and environment sectors
- */
- flash_protect ( FLAG_PROTECT_SET,
- CONFIG_SYS_FLASH_BASE,
- CONFIG_SYS_FLASH_BASE + monitor_flash_len - 1,
- &flash_info[0] );
-
- flash_protect ( FLAG_PROTECT_SET,
- CONFIG_ENV_ADDR,
- CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1, &flash_info[0] );
-
- return size;
-}
-
-/*-----------------------------------------------------------------------
- */
-static void flash_get_offsets (ulong base, flash_info_t *info)
-{
- int i;
-
- if (info->flash_id == FLASH_UNKNOWN) {
- return;
- }
-
- if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
- for (i = 0; i < info->sector_count; i++) {
- info->start[i] = base + (i * PHYS_FLASH_SECT_SIZE);
- info->protect[i] = 0;
- }
- }
-}
-
-/*-----------------------------------------------------------------------
- */
-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_INTEL:
- printf ("INTEL ");
- break;
- default:
- printf ("Unknown Vendor ");
- break;
- }
-
- switch (info->flash_id & FLASH_TYPEMASK) {
- case FLASH_28F640J3A:
- printf ("28F640J3A\n");
- break;
- case FLASH_28F128J3A:
- printf ("28F128J3A\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");
- return;
-}
-
-/*
- * The following code cannot be run from FLASH!
- */
-static ulong flash_get_size (FPW *addr, flash_info_t *info)
-{
- volatile FPW value;
-
- /* Write auto select command: read Manufacturer ID */
- addr[0x5555] = (FPW) 0x00AA00AA;
- addr[0x2AAA] = (FPW) 0x00550055;
- addr[0x5555] = (FPW) 0x00900090;
-
- mb ();
- value = addr[0];
-
- switch (value) {
-
- case (FPW) INTEL_MANUFACT:
- info->flash_id = FLASH_MAN_INTEL;
- break;
-
- default:
- info->flash_id = FLASH_UNKNOWN;
- info->sector_count = 0;
- info->size = 0;
- addr[0] = (FPW) INTEL_RESET; /* restore read mode */
- return (0); /* no or unknown flash */
- }
-
- mb ();
- value = addr[1]; /* device ID */
-
- switch (value) {
-
- case (FPW) INTEL_ID_28F640J3A:
- info->flash_id += FLASH_28F640J3A;
- info->sector_count = 64;
- info->size = 0x00800000;
- break; /* => 8 MB */
-
- case (FPW) INTEL_ID_28F128J3A:
- info->flash_id += FLASH_28F128J3A;
- info->sector_count = 128;
- info->size = 0x01000000;
- break; /* => 16 MB */
-
- default:
- info->flash_id = FLASH_UNKNOWN;
- break;
- }
-
- if (info->sector_count > CONFIG_SYS_MAX_FLASH_SECT) {
- printf ("** ERROR: sector count %d > max (%d) **\n",
- info->sector_count, CONFIG_SYS_MAX_FLASH_SECT);
- info->sector_count = CONFIG_SYS_MAX_FLASH_SECT;
- }
-
- addr[0] = (FPW) INTEL_RESET; /* restore read mode */
-
- return (info->size);
-}
-
-
-/*-----------------------------------------------------------------------
- */
-
-int flash_erase (flash_info_t *info, int s_first, int s_last)
-{
- int prot, sect;
- ulong type, start, last;
- int rcode = 0;
- int cflag, iflag;
-
- 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;
- }
-
- type = (info->flash_id & FLASH_VENDMASK);
- if ((type != FLASH_MAN_INTEL)) {
- 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");
- }
-
- start = get_timer (0);
- last = start;
-
- /*
- * Disable interrupts which might cause a timeout
- * here. Remember that our exception vectors are
- * at address 0 in the flash, and we don't want a
- * (ticker) exception to happen while the flash
- * chip is in programming mode.
- */
- cflag = icache_status ();
- icache_disable ();
- /* Disable interrupts which might cause a timeout here */
- iflag = disable_interrupts ();
-
- /* Start erase on unprotected sectors */
- for (sect = s_first; sect <= s_last; sect++) {
- if (info->protect[sect] == 0) { /* not protected */
- FPWV *addr = (FPWV *) (info->start[sect]);
- FPW status;
-
- printf ("Erasing sector %2d ... ", sect);
-
- /* arm simple, non interrupt dependent timer */
- reset_timer_masked ();
-
- *addr = (FPW) INTEL_CLEAR; /* clear status register */
- *addr = (FPW) INTEL_ERASE; /* erase setup */
- *addr = (FPW) INTEL_CONFIRM; /* erase confirm */
-
- while (((status = *addr) & (FPW) INTEL_FINISHED) != (FPW) INTEL_FINISHED) {
- if (get_timer_masked () > CONFIG_SYS_FLASH_ERASE_TOUT) {
- printf ("Timeout\n");
- *addr = (FPW) INTEL_SUSPEND; /* suspend erase */
- *addr = (FPW) INTEL_RESET; /* reset to read mode */
- rcode = 1;
- break;
- }
- }
-
- *addr = (FPWV)INTEL_CLEAR; /* clear status register cmd. */
- *addr = (FPWV)INTEL_RESET; /* resest to read mode */
-
- printf (" done\n");
- }
- }
-
- if (iflag)
- enable_interrupts ();
-
- if (cflag)
- icache_enable ();
-
- return rcode;
-}
-
-/*-----------------------------------------------------------------------
- * Copy memory to flash, returns:
- * 0 - OK
- * 1 - write timeout
- * 2 - Flash not erased
- * 4 - Flash not identified
- */
-
-int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
-{
- ulong cp, wp;
- FPW data;
- int count, i, l, rc, port_width;
-
- if (info->flash_id == FLASH_UNKNOWN) {
- return 4;
- }
-
- /* get lower word aligned address */
- wp = (addr & ~1);
- port_width = 2;
-
- /*
- * 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 < port_width && cnt > 0; ++i) {
- data = (data << 8) | *src++;
- --cnt;
- ++cp;
- }
- for (; cnt == 0 && i < port_width; ++i, ++cp) {
- data = (data << 8) | (*(uchar *) cp);
- }
-
- if ((rc = write_data (info, wp, SWAP (data))) != 0) {
- return (rc);
- }
- wp += port_width;
- }
-
- /*
- * handle word aligned part
- */
- count = 0;
- while (cnt >= port_width) {
- data = 0;
- for (i = 0; i < port_width; ++i) {
- data = (data << 8) | *src++;
- }
- if ((rc = write_data (info, wp, SWAP (data))) != 0) {
- return (rc);
- }
- wp += port_width;
- cnt -= port_width;
- if (count++ > 0x800) {
- spin_wheel ();
- count = 0;
- }
- }
-
- if (cnt == 0) {
- return (0);
- }
-
- /*
- * handle unaligned tail bytes
- */
- data = 0;
- for (i = 0, cp = wp; i < port_width && cnt > 0; ++i, ++cp) {
- data = (data << 8) | *src++;
- --cnt;
- }
- for (; i < port_width; ++i, ++cp) {
- data = (data << 8) | (*(uchar *) cp);
- }
-
- return (write_data (info, wp, SWAP (data)));
-}
-
-/*-----------------------------------------------------------------------
- * Write a word or halfword to Flash, returns:
- * 0 - OK
- * 1 - write timeout
- * 2 - Flash not erased
- */
-static int write_data (flash_info_t *info, ulong dest, FPW data)
-{
- FPWV *addr = (FPWV *) dest;
- ulong status;
- int cflag, iflag;
-
- /* Check if Flash is (sufficiently) erased */
- if ((*addr & data) != data) {
- printf ("not erased at %08lx (%lx)\n", (ulong) addr, (ulong) *addr);
- return (2);
- }
- /*
- * Disable interrupts which might cause a timeout
- * here. Remember that our exception vectors are
- * at address 0 in the flash, and we don't want a
- * (ticker) exception to happen while the flash
- * chip is in programming mode.
- */
- cflag = icache_status ();
- icache_disable ();
- /* Disable interrupts which might cause a timeout here */
- iflag = disable_interrupts ();
-
- *addr = (FPW) INTEL_PROG; /* write setup */
- *addr = data;
-
- /* arm simple, non interrupt dependent timer */
- reset_timer_masked ();
-
- /* wait while polling the status register */
- while (((status = *addr) & (FPW) INTEL_FINISHED) != (FPW) INTEL_FINISHED) {
- if (get_timer_masked () > CONFIG_SYS_FLASH_WRITE_TOUT) {
- *addr = (FPW) INTEL_RESET; /* restore read mode */
- return (1);
- }
- }
-
- *addr = (FPW) INTEL_RESET; /* restore read mode */
-
- if (iflag)
- enable_interrupts ();
-
- if (cflag)
- icache_enable ();
-
- return (0);
-}
-
-void inline spin_wheel (void)
-{
- static int p = 0;
- static char w[] = "\\/-";
-
- printf ("\010%c", w[p]);
- (++p == 3) ? (p = 0) : 0;
-}
-
-/*-----------------------------------------------------------------------
- * Set/Clear sector's lock bit, returns:
- * 0 - OK
- * 1 - Error (timeout, voltage problems, etc.)
- */
-int flash_real_protect(flash_info_t *info, long sector, int prot)
-{
- int i;
- int rc = 0;
- FPWV *addr = (FPWV *)(info->start[sector]);
- int flag = disable_interrupts();
-
- *addr = (FPW) INTEL_CLEAR; /* Clear status register */
- if (prot) { /* Set sector lock bit */
- *addr = (FPW) INTEL_LOCKBIT; /* Sector lock bit */
- *addr = (FPW) INTEL_PROTECT; /* set */
- }
- else { /* Clear sector lock bit */
- *addr = (FPW) INTEL_LOCKBIT; /* All sectors lock bits */
- *addr = (FPW) INTEL_CONFIRM; /* clear */
- }
-
- reset_timer_masked ();
-
- while ((*addr & (FPW) INTEL_FINISHED) != (FPW) INTEL_FINISHED) {
- if (get_timer_masked () > CONFIG_SYS_FLASH_UNLOCK_TOUT) {
- printf("Flash lock bit operation timed out\n");
- rc = 1;
- break;
- }
- }
-
- if (*addr != (FPW) INTEL_OK) {
- printf("Flash lock bit operation failed at %08X, CSR=%08X\n",
- (uint)addr, (uint)*addr);
- rc = 1;
- }
-
- if (!rc)
- info->protect[sector] = prot;
-
- /*
- * Clear lock bit command clears all sectors lock bits, so
- * we have to restore lock bits of protected sectors.
- */
- if (!prot)
- {
- for (i = 0; i < info->sector_count; i++)
- {
- if (info->protect[i])
- {
- reset_timer_masked ();
- addr = (FPWV *) (info->start[i]);
- *addr = (FPW) INTEL_LOCKBIT; /* Sector lock bit */
- *addr = (FPW) INTEL_PROTECT; /* set */
- while ((*addr & (FPW) INTEL_FINISHED) != (FPW) INTEL_FINISHED)
- {
- if (get_timer_masked () > CONFIG_SYS_FLASH_UNLOCK_TOUT)
- {
- printf("Flash lock bit operation timed out\n");
- rc = 1;
- break;
- }
- }
- }
- }
- }
-
- if (flag)
- enable_interrupts();
-
- *addr = (FPW) INTEL_RESET; /* Reset to read array mode */
-
- return rc;
-}
generated by cgit v1.1 at 2024-11-10 15:58:47 +0000