diff options
Diffstat (limited to 'qemu/roms/u-boot/board/pm826/flash.c')
| -rw-r--r-- | qemu/roms/u-boot/board/pm826/flash.c | 370 |
1 files changed, 0 insertions, 370 deletions
diff --git a/qemu/roms/u-boot/board/pm826/flash.c b/qemu/roms/u-boot/board/pm826/flash.c deleted file mode 100644 index 786a29b49..000000000 --- a/qemu/roms/u-boot/board/pm826/flash.c +++ /dev/null @@ -1,370 +0,0 @@ -/* - * (C) Copyright 2001, 2002 - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * - * Flash Routines for Intel devices - * - *-------------------------------------------------------------------- - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <common.h> -#include <mpc8xx.h> - - -flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; - -/*----------------------------------------------------------------------- - */ -ulong flash_get_size (volatile unsigned long *baseaddr, - flash_info_t * info) -{ - short i; - unsigned long flashtest_h, flashtest_l; - - info->sector_count = info->size = 0; - info->flash_id = FLASH_UNKNOWN; - - /* Write query command sequence and test FLASH answer - */ - baseaddr[0] = 0x00980098; - baseaddr[1] = 0x00980098; - - flashtest_h = baseaddr[0]; /* manufacturer ID */ - flashtest_l = baseaddr[1]; - - if (flashtest_h != INTEL_MANUFACT || flashtest_l != INTEL_MANUFACT) - return (0); /* no or unknown flash */ - - flashtest_h = baseaddr[2]; /* device ID */ - flashtest_l = baseaddr[3]; - - if (flashtest_h != flashtest_l) - return (0); - - switch (flashtest_h) { - case INTEL_ID_28F160C3B: - info->flash_id = FLASH_28F160C3B; - info->sector_count = 39; - info->size = 0x00800000; /* 4 * 2 MB = 8 MB */ - break; - case INTEL_ID_28F160F3B: - info->flash_id = FLASH_28F160F3B; - info->sector_count = 39; - info->size = 0x00800000; /* 4 * 2 MB = 8 MB */ - break; - case INTEL_ID_28F640C3B: - info->flash_id = FLASH_28F640C3B; - info->sector_count = 135; - info->size = 0x02000000; /* 16 * 2 MB = 32 MB */ - break; - default: - return (0); /* no or unknown flash */ - } - - info->flash_id |= INTEL_MANUFACT << 16; /* set manufacturer offset */ - - if (info->flash_id & FLASH_BTYPE) { - volatile unsigned long *tmp = baseaddr; - - /* set up sector start adress table (bottom sector type) - * AND unlock the sectors (if our chip is 160C3 or 640C3) - */ - for (i = 0; i < info->sector_count; i++) { - if (((info->flash_id & FLASH_TYPEMASK) == FLASH_28F160C3B) || - ((info->flash_id & FLASH_TYPEMASK) == FLASH_28F640C3B)) { - tmp[0] = 0x00600060; - tmp[1] = 0x00600060; - tmp[0] = 0x00D000D0; - tmp[1] = 0x00D000D0; - } - info->start[i] = (uint) tmp; - tmp += i < 8 ? 0x2000 : 0x10000; /* pointer arith */ - } - } - - memset (info->protect, 0, info->sector_count); - - baseaddr[0] = 0x00FF00FF; - baseaddr[1] = 0x00FF00FF; - - return (info->size); -} - -/*----------------------------------------------------------------------- - */ -unsigned long flash_init (void) -{ - unsigned long size_b0 = 0; - int i; - - /* Init: no FLASHes known - */ - for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) { - flash_info[i].flash_id = FLASH_UNKNOWN; - } - - /* Static FLASH Bank configuration here (only one bank) */ - - size_b0 = flash_get_size ((ulong *) CONFIG_SYS_FLASH0_BASE, &flash_info[0]); - if (flash_info[0].flash_id == FLASH_UNKNOWN || size_b0 == 0) { - printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n", - size_b0, size_b0 >> 20); - } - - /* protect monitor and environment sectors - */ - -#ifndef CONFIG_BOOT_ROM - /* If U-Boot is booted from ROM the CONFIG_SYS_MONITOR_BASE > CONFIG_SYS_FLASH0_BASE - * but we shouldn't protect it. - */ - -# if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH0_BASE - flash_protect (FLAG_PROTECT_SET, - CONFIG_SYS_MONITOR_BASE, - CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1, &flash_info[0] - ); -# endif -#endif /* CONFIG_BOOT_ROM */ - -#if defined(CONFIG_ENV_IS_IN_FLASH) && defined(CONFIG_ENV_ADDR) -# ifndef CONFIG_ENV_SIZE -# define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE -# endif - flash_protect (FLAG_PROTECT_SET, - CONFIG_ENV_ADDR, - CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1, &flash_info[0]); -#endif - - return (size_b0); -} - -/*----------------------------------------------------------------------- - */ -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 >> 16) & 0xff) { - case 0x89: - printf ("INTEL "); - break; - default: - printf ("Unknown Vendor "); - break; - } - - switch (info->flash_id & FLASH_TYPEMASK) { - case FLASH_28F160C3B: - printf ("28F160C3B (16 M, bottom sector)\n"); - break; - case FLASH_28F160F3B: - printf ("28F160F3B (16 M, bottom sector)\n"); - break; - case FLASH_28F640C3B: - printf ("28F640C3B (64 M, bottom sector)\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"); -} - -/*----------------------------------------------------------------------- - */ -int flash_erase (flash_info_t * info, int s_first, int s_last) -{ - int flag, prot, 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; - } - - 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 erase on unprotected sectors - */ - for (sect = s_first; sect <= s_last; sect++) { - volatile ulong *addr = - (volatile unsigned long *) info->start[sect]; - - start = get_timer (0); - last = start; - if (info->protect[sect] == 0) { - /* Disable interrupts which might cause a timeout here - */ - flag = disable_interrupts (); - - /* Erase the block - */ - addr[0] = 0x00200020; - addr[1] = 0x00200020; - addr[0] = 0x00D000D0; - addr[1] = 0x00D000D0; - - /* re-enable interrupts if necessary - */ - if (flag) - enable_interrupts (); - - /* wait at least 80us - let's wait 1 ms - */ - udelay (1000); - - last = start; - while ((addr[0] & 0x00800080) != 0x00800080 || - (addr[1] & 0x00800080) != 0x00800080) { - if ((now = get_timer (start)) > CONFIG_SYS_FLASH_ERASE_TOUT) { - printf ("Timeout (erase suspended!)\n"); - /* Suspend erase - */ - addr[0] = 0x00B000B0; - addr[1] = 0x00B000B0; - goto DONE; - } - /* show that we're waiting - */ - if ((now - last) > 1000) { /* every second */ - serial_putc ('.'); - last = now; - } - } - if (addr[0] & 0x00220022 || addr[1] & 0x00220022) { - printf ("*** ERROR: erase failed!\n"); - goto DONE; - } - } - /* Clear status register and reset to read mode - */ - addr[0] = 0x00500050; - addr[1] = 0x00500050; - addr[0] = 0x00FF00FF; - addr[1] = 0x00FF00FF; - } - - printf (" done\n"); - -DONE: - return 0; -} - -static int write_word (flash_info_t *, volatile unsigned long *, ulong); - -/*----------------------------------------------------------------------- - * 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 v; - int i, l, cc = cnt, res = 0; - - - for (v=0; cc > 0; addr += 4, cc -= 4 - l) { - l = (addr & 3); - addr &= ~3; - - for (i = 0; i < 4; i++) { - v = (v << 8) + (i < l || i - l >= cc ? - *((unsigned char *) addr + i) : *src++); - } - - if ((res = write_word (info, (volatile unsigned long *) addr, v)) != 0) - break; - } - - return (res); -} - -/*----------------------------------------------------------------------- - * Write a word to Flash, returns: - * 0 - OK - * 1 - write timeout - * 2 - Flash not erased - */ -static int write_word (flash_info_t * info, volatile unsigned long *addr, - ulong data) -{ - int flag, res = 0; - ulong start; - - /* Check if Flash is (sufficiently) erased - */ - if ((*addr & data) != data) - return (2); - - /* Disable interrupts which might cause a timeout here - */ - flag = disable_interrupts (); - - *addr = 0x00400040; - *addr = data; - - /* re-enable interrupts if necessary - */ - if (flag) - enable_interrupts (); - - start = get_timer (0); - while ((*addr & 0x00800080) != 0x00800080) { - if (get_timer (start) > CONFIG_SYS_FLASH_WRITE_TOUT) { - /* Suspend program - */ - *addr = 0x00B000B0; - res = 1; - goto OUT; - } - } - - if (*addr & 0x00220022) { - printf ("*** ERROR: program failed!\n"); - res = 1; - } - -OUT: - /* Clear status register and reset to read mode - */ - *addr = 0x00500050; - *addr = 0x00FF00FF; - - return (res); -} |