diff options
Diffstat (limited to 'qemu/roms/u-boot/board/funkwerk/vovpn-gw/flash.c')
| -rw-r--r-- | qemu/roms/u-boot/board/funkwerk/vovpn-gw/flash.c | 436 |
1 files changed, 0 insertions, 436 deletions
diff --git a/qemu/roms/u-boot/board/funkwerk/vovpn-gw/flash.c b/qemu/roms/u-boot/board/funkwerk/vovpn-gw/flash.c deleted file mode 100644 index 829514c17..000000000 --- a/qemu/roms/u-boot/board/funkwerk/vovpn-gw/flash.c +++ /dev/null @@ -1,436 +0,0 @@ -/* - * (C) Copyright 2004 - * Elmeg Communications Systems GmbH, Juergen Selent (j.selent@elmeg.de) - * - * Support for the Elmeg VoVPN Gateway Module - * ------------------------------------------ - * This is a signle bank flashdriver for INTEL 28F320J3, 28F640J3 - * and 28F128J3A flashs working in 8 Bit mode. - * - * Most of this code is taken from existing u-boot source code. - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <common.h> - -flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; - -#define FLASH_CMD_READ_ID 0x90 -#define FLASH_CMD_READ_STATUS 0x70 -#define FLASH_CMD_RESET 0xff -#define FLASH_CMD_BLOCK_ERASE 0x20 -#define FLASH_CMD_ERASE_CONFIRM 0xd0 -#define FLASH_CMD_CLEAR_STATUS 0x50 -#define FLASH_CMD_SUSPEND_ERASE 0xb0 -#define FLASH_CMD_WRITE 0x40 -#define FLASH_CMD_WRITE_BUFF 0xe8 -#define FLASH_CMD_PROG_RESUME 0xd0 -#define FLASH_CMD_PROTECT 0x60 -#define FLASH_CMD_PROTECT_SET 0x01 -#define FLASH_CMD_PROTECT_CLEAR 0xd0 -#define FLASH_STATUS_DONE 0x80 - -#define FLASH_WRITE_BUFFER_SIZE 32 - -#ifdef CONFIG_SYS_FLASH_16BIT -#define FLASH_WORD_SIZE unsigned short -#define FLASH_ID_MASK 0xffff -#define FLASH_CMD_ADDR_SHIFT 0 -#else -#define FLASH_WORD_SIZE unsigned char -#define FLASH_ID_MASK 0xff -/* A0 is not used in either 8x or 16x for READ ID */ -#define FLASH_CMD_ADDR_SHIFT 1 -#endif - - -static unsigned long -flash_get(volatile FLASH_WORD_SIZE *addr, flash_info_t *info) -{ - volatile FLASH_WORD_SIZE *p; - FLASH_WORD_SIZE value; - int i; - - addr[0] = FLASH_CMD_READ_ID; - - /* manufactor */ - value = addr[0 << FLASH_CMD_ADDR_SHIFT]; - switch (value) { - case (INTEL_MANUFACT & FLASH_ID_MASK): - info->flash_id = FLASH_MAN_INTEL; - break; - default: - info->flash_id = FLASH_UNKNOWN; - info->sector_count = 0; - info->size = 0; - *addr = FLASH_CMD_RESET; - return (0); - - } - - /* device */ - value = addr[1 << FLASH_CMD_ADDR_SHIFT]; - switch (value) { - case (INTEL_ID_28F320J3A & FLASH_ID_MASK): - info->flash_id += FLASH_28F320J3A; - info->sector_count = 32; - info->size = 0x00400000; - break; - case (INTEL_ID_28F640J3A & FLASH_ID_MASK): - info->flash_id += FLASH_28F640J3A; - info->sector_count = 64; - info->size = 0x00800000; - break; - case (INTEL_ID_28F128J3A & FLASH_ID_MASK): - info->flash_id += FLASH_28F128J3A; - info->sector_count = 128; - info->size = 0x01000000; - break; - default: - info->flash_id = FLASH_UNKNOWN; - info->sector_count = 0; - info->size = 0; - *addr = FLASH_CMD_RESET; - return (0); - } - - /* setup sectors */ - for (i = 0; i < info->sector_count; i++) { - info->start[i] = (unsigned long)addr + (i * info->size/info->sector_count); - } - - /* check protected sectors */ - for (i = 0; i < info->sector_count; i++) { - p = (volatile FLASH_WORD_SIZE *)(info->start[i]); - info->protect[i] = p[2 << FLASH_CMD_ADDR_SHIFT] & 1; - } - - /* reset bank */ - *addr = FLASH_CMD_RESET; - return (info->size); -} - -unsigned long -flash_init(void) -{ - unsigned long size; - int i; - - for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) { - flash_info[i].flash_id = FLASH_UNKNOWN; - } - size = flash_get((volatile FLASH_WORD_SIZE *)CONFIG_SYS_FLASH_BASE, &flash_info[0]); - if (flash_info[0].flash_id == FLASH_UNKNOWN) { - printf ("## Unknown FLASH Size=0x%08lx\n", size); - return (0); - } - - /* always protect 1 sector containing the HRCW */ - flash_protect(FLAG_PROTECT_SET, - flash_info[0].start[0], - flash_info[0].start[1] - 1, - &flash_info[0]); - -#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE - flash_protect(FLAG_PROTECT_SET, - CONFIG_SYS_MONITOR_FLASH, - CONFIG_SYS_MONITOR_FLASH+CONFIG_SYS_MONITOR_LEN-1, - &flash_info[0]); -#endif -#ifdef CONFIG_ENV_IS_IN_FLASH - flash_protect(FLAG_PROTECT_SET, - CONFIG_ENV_ADDR, - CONFIG_ENV_ADDR+CONFIG_ENV_SECT_SIZE-1, - &flash_info[0]); -#endif - return (size); -} - -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_28F320J3A: printf ("28F320JA3 (32 Mbit)\n"); - break; - case FLASH_28F640J3A: printf ("28F640JA3 (64 Mbit)\n"); - break; - case FLASH_28F128J3A: printf ("28F128JA3 (128 Mbit)\n"); - break; - default: printf ("Unknown Chip Type"); - 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"); -} - -int -flash_erase(flash_info_t *info, int s_first, int s_last) -{ - unsigned long start, now, last; - int flag, prot, sect; - volatile FLASH_WORD_SIZE *addr; - FLASH_WORD_SIZE status; - - 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) { - printf ("Cannot erase unknown flash - 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"); - } - - start = get_timer (0); - last = start; - - for (sect = s_first; sect<=s_last; sect++) { - if (info->protect[sect]) { - continue; - } - - addr = (volatile FLASH_WORD_SIZE *)(info->start[sect]); - /* Disable interrupts which might cause a timeout here */ - flag = disable_interrupts(); - -#ifdef DEBUG - printf("Erase sector %d at start addr 0x%08X", sect, (unsigned int)info->start[sect]); -#endif - - *addr = FLASH_CMD_CLEAR_STATUS; - *addr = FLASH_CMD_BLOCK_ERASE; - *addr = FLASH_CMD_ERASE_CONFIRM; - - /* re-enable interrupts if necessary */ - if (flag) { - enable_interrupts(); - } - - /* wait at least 80us - let's wait 1 ms */ - udelay (1000); - - while (((status = *addr) & FLASH_STATUS_DONE) != FLASH_STATUS_DONE) { - if ((now=get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) { - printf("Flash erase timeout at address %lx\n", info->start[sect]); - *addr = FLASH_CMD_SUSPEND_ERASE; - *addr = FLASH_CMD_RESET; - return (1); - } - - /* show that we're waiting */ - if ((now - last) > 1000) { /* every second */ - putc ('.'); - last = now; - } - } - *addr = FLASH_CMD_RESET; - } - printf (" done\n"); - return (0); -} - -static int -write_buff2( volatile FLASH_WORD_SIZE *dst, - volatile FLASH_WORD_SIZE *src, - unsigned long cnt ) -{ - unsigned long start; - FLASH_WORD_SIZE status; - int flag, i; - - start = get_timer (0); - while (1) { - /* Disable interrupts which might cause a timeout here */ - flag = disable_interrupts(); - dst[0] = FLASH_CMD_WRITE_BUFF; - if ((status = *dst) & FLASH_STATUS_DONE) { - break; - } - - /* re-enable interrupts if necessary */ - if (flag) { - enable_interrupts(); - } - - if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) { - return (-1); - } - } - dst[0] = (FLASH_WORD_SIZE)(cnt - 1); - for (i=0; i<cnt; i++) { - dst[i] = src[i]; - } - dst[0] = FLASH_CMD_PROG_RESUME; - - if (flag) { - enable_interrupts(); - } - - return( 0 ); -} - -static int -poll_status( volatile FLASH_WORD_SIZE *addr ) -{ - unsigned long start; - - start = get_timer (0); - /* wait for error or finish */ - while (1) { - if (*addr == FLASH_STATUS_DONE) { - if (*addr == FLASH_STATUS_DONE) { - break; - } - } - if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) { - *addr = FLASH_CMD_RESET; - return (-1); - } - } - *addr = FLASH_CMD_RESET; - return (0); -} - -/* - * write_buff return values: - * 0 - OK - * 1 - write timeout - * 2 - Flash not erased - * 4 - Flash not identified - */ -int -write_buff(flash_info_t *info, uchar *src, ulong udst, ulong cnt) -{ - volatile FLASH_WORD_SIZE *addr, *dst; - unsigned long bcnt; - int flag, i; - - if (info->flash_id == FLASH_UNKNOWN) { - return (4); - } - - addr = (volatile FLASH_WORD_SIZE *)(info->start[0]); - dst = (volatile FLASH_WORD_SIZE *) udst; - -#ifdef CONFIG_SYS_FLASH_16BIT -#error NYI -#else - while (cnt > 0) { - /* Check if buffer write is possible */ - if (cnt > 1 && (((unsigned long)dst & (FLASH_WRITE_BUFFER_SIZE - 1)) == 0)) { - bcnt = cnt > FLASH_WRITE_BUFFER_SIZE ? FLASH_WRITE_BUFFER_SIZE : cnt; - /* Check if Flash is (sufficiently) erased */ - for (i=0; i<bcnt; i++) { - if ((dst[i] & src[i]) != src[i]) { - return (2); - } - } - if (write_buff2( dst,src,bcnt ) != 0) { - addr[0] = FLASH_CMD_READ_STATUS; - } - if (poll_status( dst ) != 0) { - return (1); - } - cnt -= bcnt; - dst += bcnt; - src += bcnt; - continue; - } - - /* Check if Flash is (sufficiently) erased */ - if ((*dst & *src) != *src) { - return (2); - } - - /* Disable interrupts which might cause a timeout here */ - flag = disable_interrupts(); - addr[0] = FLASH_CMD_ERASE_CONFIRM; - addr[0] = FLASH_CMD_WRITE; - *dst++ = *src++; - /* re-enable interrupts if necessary */ - if (flag) { - enable_interrupts(); - } - - if (poll_status( dst ) != 0) { - return (1); - } - cnt --; - } -#endif - return (0); -} - -int -flash_real_protect(flash_info_t *info, long sector, int prot) -{ - volatile FLASH_WORD_SIZE *addr; - unsigned long start; - - addr = (volatile FLASH_WORD_SIZE *)(info->start[sector]); - *addr = FLASH_CMD_CLEAR_STATUS; - *addr = FLASH_CMD_PROTECT; - - if(prot) { - *addr = FLASH_CMD_PROTECT_SET; - } else { - *addr = FLASH_CMD_PROTECT_CLEAR; - } - - /* wait for error or finish */ - start = get_timer (0); - while(!(addr[0] & FLASH_STATUS_DONE)){ - if (get_timer(start) > CONFIG_SYS_FLASH_ERASE_TOUT) { - printf("Flash protect timeout at address %lx\n", info->start[sector]); - addr[0] = FLASH_CMD_RESET; - return (1); - } - } - - /* Set software protect flag */ - info->protect[sector] = prot; - *addr = FLASH_CMD_RESET; - return (0); -} |