diff options
Diffstat (limited to 'board/evb4510/flash.c')
| -rw-r--r-- | board/evb4510/flash.c | 539 |
1 files changed, 0 insertions, 539 deletions
diff --git a/board/evb4510/flash.c b/board/evb4510/flash.c deleted file mode 100644 index c9c6e02..0000000 --- a/board/evb4510/flash.c +++ /dev/null @@ -1,539 +0,0 @@ -/* - * - * Copyright (c) 2004 Cucy Systems (http://www.cucy.com) - * Curt Brune <curt@cucy.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 <asm/hardware.h> -#include <flash.h> - -flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; - -typedef enum { - FLASH_DEV_U9_512KB = 0, - FLASH_DEV_U7_2MB = 1 -} FLASH_DEV; - -#define FLASH_DQ7 (0x80) -#define FLASH_DQ5 (0x20) - -#define PROG_ADDR (0xAAA) -#define SETUP_ADDR (0xAAA) -#define ID_ADDR (0xAAA) -#define UNLOCK_ADDR1 (0xAAA) -#define UNLOCK_ADDR2 (0x555) - -#define UNLOCK_CMD1 (0xAA) -#define UNLOCK_CMD2 (0x55) -#define ERASE_SUSPEND_CMD (0xB0) -#define ERASE_RESUME_CMD (0x30) -#define RESET_CMD (0xF0) -#define ID_CMD (0x90) -#define SELECT_CMD (0x90) -#define CHIPERASE_CMD (0x10) -#define BYPASS_CMD (0x20) -#define SECERASE_CMD (0x30) -#define PROG_CMD (0xa0) -#define SETUP_CMD (0x80) - -#if 0 -#define WRITE_UNLOCK(addr) { \ - PUT__U8( addr + UNLOCK_ADDR1, UNLOCK_CMD1); \ - PUT__U8( addr + UNLOCK_ADDR2, UNLOCK_CMD2); \ -} - -/* auto select command */ -#define CMD_ID(addr) WRITE_UNLOCK(addr); { \ - PUT__U8( addr + ID_ADDR, ID_CMD); \ -} - -#define CMD_RESET(addr) WRITE_UNLOCK(addr); { \ - PUT__U8( addr + ID_ADDR, RESET_CMD); \ -} - -#define CMD_ERASE_SEC(base, addr) WRITE_UNLOCK(base); \ - PUT__U8( base + SETUP_ADDR, SETUP_CMD); \ - WRITE_UNLOCK(base); \ - PUT__U8( addr, SECERASE_CMD); - -#define CMD_ERASE_CHIP(base) WRITE_UNLOCK(base); \ - PUT__U8( base + SETUP_ADDR, SETUP_CMD); \ - WRITE_UNLOCK(base); \ - PUT__U8( base + SETUP_ADDR, CHIPERASE_CMD); - -/* prepare for bypass programming */ -#define CMD_UNLOCK_BYPASS(addr) WRITE_UNLOCK(addr); { \ - PUT__U8( addr + ID_ADDR, 0x20); \ -} - -/* terminate bypass programming */ -#define CMD_BYPASS_RESET(addr) { \ - PUT__U8(addr, 0x90); \ - PUT__U8(addr, 0x00); \ -} -#endif - -inline static void FLASH_CMD_UNLOCK (FLASH_DEV dev, u32 base) -{ - switch (dev) { - case FLASH_DEV_U7_2MB: - PUT__U8 (base + 0xAAA, 0xAA); - PUT__U8 (base + 0x555, 0x55); - break; - case FLASH_DEV_U9_512KB: - PUT__U8 (base + 0x555, 0xAA); - PUT__U8 (base + 0x2AA, 0x55); - break; - } -} - -inline static void FLASH_CMD_SELECT (FLASH_DEV dev, u32 base) -{ - switch (dev) { - case FLASH_DEV_U7_2MB: - FLASH_CMD_UNLOCK (dev, base); - PUT__U8 (base + 0xAAA, SELECT_CMD); - break; - case FLASH_DEV_U9_512KB: - FLASH_CMD_UNLOCK (dev, base); - PUT__U8 (base + 0x555, SELECT_CMD); - break; - } -} - -inline static void FLASH_CMD_RESET (FLASH_DEV dev, u32 base) -{ - switch (dev) { - case FLASH_DEV_U7_2MB: - FLASH_CMD_UNLOCK (dev, base); - PUT__U8 (base + 0xAAA, RESET_CMD); - break; - case FLASH_DEV_U9_512KB: - FLASH_CMD_UNLOCK (dev, base); - PUT__U8 (base + 0x555, RESET_CMD); - break; - } -} - -inline static void FLASH_CMD_ERASE_SEC (FLASH_DEV dev, u32 base, u32 addr) -{ - switch (dev) { - case FLASH_DEV_U7_2MB: - FLASH_CMD_UNLOCK (dev, base); - PUT__U8 (base + 0xAAA, SETUP_CMD); - FLASH_CMD_UNLOCK (dev, base); - PUT__U8 (addr, SECERASE_CMD); - break; - case FLASH_DEV_U9_512KB: - FLASH_CMD_UNLOCK (dev, base); - PUT__U8 (base + 0x555, SETUP_CMD); - FLASH_CMD_UNLOCK (dev, base); - PUT__U8 (addr, SECERASE_CMD); - break; - } -} - -inline static void FLASH_CMD_ERASE_CHIP (FLASH_DEV dev, u32 base) -{ - switch (dev) { - case FLASH_DEV_U7_2MB: - FLASH_CMD_UNLOCK (dev, base); - PUT__U8 (base + 0xAAA, SETUP_CMD); - FLASH_CMD_UNLOCK (dev, base); - PUT__U8 (base, CHIPERASE_CMD); - break; - case FLASH_DEV_U9_512KB: - FLASH_CMD_UNLOCK (dev, base); - PUT__U8 (base + 0x555, SETUP_CMD); - FLASH_CMD_UNLOCK (dev, base); - PUT__U8 (base, CHIPERASE_CMD); - break; - } -} - -inline static void FLASH_CMD_UNLOCK_BYPASS (FLASH_DEV dev, u32 base) -{ - switch (dev) { - case FLASH_DEV_U7_2MB: - FLASH_CMD_UNLOCK (dev, base); - PUT__U8 (base + 0xAAA, BYPASS_CMD); - break; - case FLASH_DEV_U9_512KB: - FLASH_CMD_UNLOCK (dev, base); - PUT__U8 (base + 0x555, BYPASS_CMD); - break; - } -} - -inline static void FLASH_CMD_BYPASS_RESET (FLASH_DEV dev, u32 base) -{ - PUT__U8 (base, SELECT_CMD); - PUT__U8 (base, 0x0); -} - -/* poll for flash command completion */ -static u16 _flash_poll (FLASH_DEV dev, u32 addr, u16 data, ulong timeOut) -{ - u32 done = 0; - ulong t0; - - u16 error = 0; - volatile u16 flashData; - - data = data & 0xFF; - t0 = get_timer (0); - while (get_timer (t0) < timeOut) { - /* for( i = 0; i < POLL_LOOPS; i++) { */ - /* Read the Data */ - flashData = GET__U8 (addr); - - /* FLASH_DQ7 = Data? */ - if ((flashData & FLASH_DQ7) == (data & FLASH_DQ7)) { - done = 1; - break; - } - - /* Check Timeout (FLASH_DQ5==1) */ - if (flashData & FLASH_DQ5) { - /* Read the Data */ - flashData = GET__U8 (addr); - - /* FLASH_DQ7 = Data? */ - if (!((flashData & FLASH_DQ7) == (data & FLASH_DQ7))) { - printf ("_flash_poll(): FLASH_DQ7 & flashData not equal to write value\n"); - error = ERR_PROG_ERROR; - } - FLASH_CMD_RESET (dev, addr); - done = 1; - break; - } - /* spin delay */ - udelay (10); - } - - - /* error update */ - if (!done) { - printf ("_flash_poll(): Timeout\n"); - error = ERR_TIMOUT; - } - - /* Check the data */ - if (!error) { - /* Read the Data */ - flashData = GET__U8 (addr); - if (flashData != data) { - error = ERR_PROG_ERROR; - printf ("_flash_poll(): flashData(0x%04x) not equal to data(0x%04x)\n", - flashData, data); - } - } - - return error; -} - -/*----------------------------------------------------------------------- - */ -static int _flash_check_protection (flash_info_t * info, int s_first, int s_last) -{ - int sect, prot = 0; - - for (sect = s_first; sect <= s_last; sect++) - if (info->protect[sect]) { - printf (" Flash sector %d protected.\n", sect); - prot++; - } - return prot; -} - -static int _detectFlash (FLASH_DEV dev, u32 base, u8 venId, u8 devId) -{ - - u32 baseAddr = base | CACHE_DISABLE_MASK; - u8 vendorId, deviceId; - - /* printf(__FUNCTION__"(): detecting flash @ 0x%08x\n", base); */ - - /* Send auto select command and read manufacturer info */ - FLASH_CMD_SELECT (dev, baseAddr); - vendorId = GET__U8 (baseAddr); - FLASH_CMD_RESET (dev, baseAddr); - - /* Send auto select command and read device info */ - FLASH_CMD_SELECT (dev, baseAddr); - - if (dev == FLASH_DEV_U7_2MB) { - deviceId = GET__U8 (baseAddr + 2); - } else if (dev == FLASH_DEV_U9_512KB) { - deviceId = GET__U8 (baseAddr + 1); - } else { - return 0; - } - - FLASH_CMD_RESET (dev, baseAddr); - - /* printf (__FUNCTION__"(): found vendorId 0x%04x, deviceId 0x%04x\n", - vendorId, deviceId); - */ - - return (vendorId == venId) && (deviceId == devId); - -} - -/****************************************************************************** - * - * Public u-boot interface functions below - * - *****************************************************************************/ - -/*************************************************************************** - * - * Flash initialization - * - * This board has two banks of flash, but the base addresses depend on - * how the board is jumpered. - * - * The two flash types are: - * - * AMD Am29LV160DB (2MB) sectors layout 16KB, 2x8KB, 32KB, 31x64KB - * - * AMD Am29LV040B (512KB) sectors: 8x64KB - *****************************************************************************/ - -unsigned long flash_init (void) -{ - flash_info_t *info; - u16 i; - u32 flashtest; - s16 amd160 = -1; - u32 amd160base = 0; - -#if CONFIG_SYS_MAX_FLASH_BANKS == 2 - s16 amd040 = -1; - u32 amd040base = 0; -#endif - - /* configure PHYS_FLASH_1 */ - if (_detectFlash (FLASH_DEV_U7_2MB, PHYS_FLASH_1, 0x1, 0x49)) { - amd160 = 0; - amd160base = PHYS_FLASH_1; -#if CONFIG_SYS_MAX_FLASH_BANKS == 1 - } -#else - if (_detectFlash - (FLASH_DEV_U9_512KB, PHYS_FLASH_2, 0x1, 0x4F)) { - amd040 = 1; - amd040base = PHYS_FLASH_2; - } else { - printf (__FUNCTION__ - "(): Unable to detect PHYS_FLASH_2: 0x%08x\n", - PHYS_FLASH_2); - } - } else if (_detectFlash (FLASH_DEV_U9_512KB, PHYS_FLASH_1, 0x1, 0x4F)) { - amd040 = 0; - amd040base = PHYS_FLASH_1; - if (_detectFlash (FLASH_DEV_U7_2MB, PHYS_FLASH_2, 0x1, 0x49)) { - amd160 = 1; - amd160base = PHYS_FLASH_2; - } else { - printf (__FUNCTION__ - "(): Unable to detect PHYS_FLASH_2: 0x%08x\n", - PHYS_FLASH_2); - } - } -#endif - else { - printf ("flash_init(): Unable to detect PHYS_FLASH_1: 0x%08x\n", - PHYS_FLASH_1); - } - - /* Configure AMD Am29LV160DB (2MB) */ - info = &flash_info[amd160]; - info->flash_id = FLASH_DEV_U7_2MB; - info->sector_count = 35; - info->size = 2 * 1024 * 1024; /* 2MB */ - /* 1*16K Boot Block - 2*8K Parameter Block - 1*32K Small Main Block */ - info->start[0] = amd160base; - info->start[1] = amd160base + 0x4000; - info->start[2] = amd160base + 0x6000; - info->start[3] = amd160base + 0x8000; - for (i = 1; i < info->sector_count; i++) - info->start[3 + i] = amd160base + i * (64 * 1024); - - for (i = 0; i < info->sector_count; i++) { - /* Write auto select command sequence and query sector protection */ - FLASH_CMD_SELECT (info->flash_id, - info->start[i] | CACHE_DISABLE_MASK); - flashtest = - GET__U8 (((info->start[i] + 4) | CACHE_DISABLE_MASK)); - FLASH_CMD_RESET (info->flash_id, - amd160base | CACHE_DISABLE_MASK); - info->protect[i] = (flashtest & 0x0001); - } - - /* - * protect monitor and environment sectors in 2MB flash - */ - flash_protect (FLAG_PROTECT_SET, - amd160base, amd160base + monitor_flash_len - 1, info); - - flash_protect (FLAG_PROTECT_SET, - CONFIG_ENV_ADDR, CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1, info); - -#if CONFIG_SYS_MAX_FLASH_BANKS == 2 - /* Configure AMD Am29LV040B (512KB) */ - info = &flash_info[amd040]; - info->flash_id = FLASH_DEV_U9_512KB; - info->sector_count = 8; - info->size = 512 * 1024; /* 512KB, 8 x 64KB */ - for (i = 0; i < info->sector_count; i++) { - info->start[i] = amd040base + i * (64 * 1024); - /* Write auto select command sequence and query sector protection */ - FLASH_CMD_SELECT (info->flash_id, - info->start[i] | CACHE_DISABLE_MASK); - flashtest = - GET__U8 (((info->start[i] + 2) | CACHE_DISABLE_MASK)); - FLASH_CMD_RESET (info->flash_id, - amd040base | CACHE_DISABLE_MASK); - info->protect[i] = (flashtest & 0x0001); - } -#endif - - return flash_info[0].size -#if CONFIG_SYS_MAX_FLASH_BANKS == 2 - + flash_info[1].size -#endif - ; -} - -void flash_print_info (flash_info_t * info) -{ - int i; - - if (info->flash_id == FLASH_DEV_U7_2MB) { - printf ("AMD Am29LV160DB (2MB) 16KB,2x8KB,32KB,31x64KB\n"); - } else if (info->flash_id == FLASH_DEV_U9_512KB) { - printf ("AMD Am29LV040B (512KB) 8x64KB\n"); - } else { - printf ("Unknown flash_id ...\n"); - return; - } - - printf (" Size: %ld KB in %d Sectors\n", - info->size >> 10, info->sector_count); - printf (" Sector Start Addresses:"); - for (i = 0; i < info->sector_count; i++) { - if ((i % 4) == 0) - printf ("\n "); - printf (" S%02d @ 0x%08lX%s", i, - info->start[i], info->protect[i] ? " !" : " "); - } - printf ("\n"); -} - -int flash_erase (flash_info_t * info, int s_first, int s_last) -{ - u16 i, error = 0; - - printf ("\n"); - - /* check flash protection bits */ - if (_flash_check_protection (info, s_first, s_last)) { - printf (" Flash erase aborted due to protected sectors\n"); - return ERR_PROTECTED; - } - - if ((s_first < info->sector_count) && (s_first <= s_last)) { - for (i = s_first; i <= s_last && !error; i++) { - printf (" Erasing Sector %d @ 0x%08lx ... ", i, - info->start[i]); - /* bypass the cache to access the flash memory */ - FLASH_CMD_ERASE_SEC (info->flash_id, - (info-> - start[0] | CACHE_DISABLE_MASK), - (info-> - start[i] | CACHE_DISABLE_MASK)); - /* look for sector to become 0xFF after erase */ - error = _flash_poll (info->flash_id, - info-> - start[i] | CACHE_DISABLE_MASK, - 0xFF, CONFIG_SYS_FLASH_ERASE_TOUT); - FLASH_CMD_RESET (info->flash_id, - (info-> - start[0] | CACHE_DISABLE_MASK)); - printf ("done\n"); - if (error) { - break; - } - } - } else - error = ERR_INVAL; - - return error; -} - -int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt) -{ - u16 error = 0, i; - u32 n; - u8 *bp, *bps; - - /* Write Setup */ - /* bypass the cache to access the flash memory */ - FLASH_CMD_UNLOCK_BYPASS (info->flash_id, - (info->start[0] | CACHE_DISABLE_MASK)); - - /* Write the Data to Flash */ - - bp = (u8 *) (addr | CACHE_DISABLE_MASK); - bps = (u8 *) src; - - for (n = 0; n < cnt && !error; n++, bp++, bps++) { - - if (!(n % (cnt / 15))) { - printf ("."); - } - - /* write the flash command for flash memory */ - *bp = 0xA0; - - /* Write the data */ - *bp = *bps; - - /* Check if the write is done */ - for (i = 0; i < 0xff; i++); - error = _flash_poll (info->flash_id, (u32) bp, *bps, - CONFIG_SYS_FLASH_WRITE_TOUT); - if (error) { - return error; - } - } - - /* Reset the Flash Mode to read */ - FLASH_CMD_BYPASS_RESET (info->flash_id, info->start[0]); - - printf (" "); - - return error; -} |