diff options
Diffstat (limited to 'board/nx823/flash.c')
| -rw-r--r-- | board/nx823/flash.c | 449 |
1 files changed, 0 insertions, 449 deletions
diff --git a/board/nx823/flash.c b/board/nx823/flash.c deleted file mode 100644 index fbe17dd..0000000 --- a/board/nx823/flash.c +++ /dev/null @@ -1,449 +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. - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <common.h> -#include <mpc8xx.h> - -DECLARE_GLOBAL_DATA_PTR; - -flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */ - -/*----------------------------------------------------------------------- - * Protection Flags: - */ -#define FLAG_PROTECT_SET 0x01 -#define FLAG_PROTECT_CLEAR 0x02 - -/* Board support for 1 or 2 flash devices */ -#undef FLASH_PORT_WIDTH32 -#define FLASH_PORT_WIDTH16 - -#ifdef FLASH_PORT_WIDTH16 -#define FLASH_PORT_WIDTH ushort -#define FLASH_PORT_WIDTHV vu_short -#else -#define FLASH_PORT_WIDTH ulong -#define FLASH_PORT_WIDTHV vu_long -#endif - -#define FPW FLASH_PORT_WIDTH -#define FPWV FLASH_PORT_WIDTHV - -/*----------------------------------------------------------------------- - * 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); - -/*----------------------------------------------------------------------- - */ - -unsigned long flash_init (void) -{ - volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; - volatile memctl8xx_t *memctl = &immap->im_memctl; - unsigned long size_b0; - 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 - FIXME XXX */ - size_b0 = flash_get_size((FPW *)FLASH_BASE0_PRELIM, &flash_info[0]); - - if (flash_info[0].flash_id == FLASH_UNKNOWN) { - printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n", - size_b0, size_b0<<20); - } - - /* Remap FLASH according to real size */ - memctl->memc_or0 = CONFIG_SYS_OR_TIMING_FLASH | (-size_b0 & 0xFFFF8000); - memctl->memc_br0 = (CONFIG_SYS_FLASH_BASE & BR_BA_MSK) | BR_PS_16 | BR_MS_GPCM | BR_V; - - /* Re-do sizing to get full correct info */ - size_b0 = flash_get_size((FPW *)CONFIG_SYS_FLASH_BASE, &flash_info[0]); - - flash_get_offsets (CONFIG_SYS_FLASH_BASE, &flash_info[0]); - - /* monitor protection ON by default */ - (void)flash_protect(FLAG_PROTECT_SET, - CONFIG_SYS_FLASH_BASE, - CONFIG_SYS_FLASH_BASE+monitor_flash_len-1, - &flash_info[0]); - - 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_UNKNOWN) { - return; - } - - if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) { - for (i = 0; i < info->sector_count; i++) { - info->start[i] = base + (i * 0x00020000); - } - } -} - -/*----------------------------------------------------------------------- - */ -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 ("28F320J3A\n"); break; - 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) -{ - FPW value; - - /* Write auto select command: read Manufacturer ID */ - addr[0x5555] = (FPW)0x00AA00AA; - addr[0x2AAA] = (FPW)0x00550055; - addr[0x5555] = (FPW)0x00900090; - - 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)0x00FF00FF; /* restore read mode */ - return (0); /* no or unknown flash */ - } - - value = addr[1]; /* device ID */ - - switch (value) { - case (FPW)INTEL_ID_28F320J3A: - info->flash_id += FLASH_28F320J3A; - info->sector_count = 32; - info->size = 0x00400000; - break; /* => 4 MB */ - - 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)0x00FF00FF; /* restore read mode */ - - return (info->size); -} - - -/*----------------------------------------------------------------------- - */ - -int flash_erase (flash_info_t *info, int s_first, int s_last) -{ - int flag, prot, sect; - ulong type, start, now, last; - int rcode = 0; - - 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; - /* 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; - - /* Disable interrupts which might cause a timeout here */ - flag = disable_interrupts(); - - *addr = (FPW)0x00500050; /* clear status register */ - *addr = (FPW)0x00200020; /* erase setup */ - *addr = (FPW)0x00D000D0; /* 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) & (FPW)0x00800080) != (FPW)0x00800080) { - if ((now=get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) { - printf ("Timeout\n"); - *addr = (FPW)0x00B000B0; /* suspend erase */ - *addr = (FPW)0x00FF00FF; /* reset to read mode */ - rcode = 1; - break; - } - - /* show that we're waiting */ - if ((now - last) > 1000) { /* every second */ - putc ('.'); - last = now; - } - } - - *addr = (FPW)0x00FF00FF; /* reset to read mode */ - printf (" done\n"); - } - } - 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 */ -#ifdef FLASH_PORT_WIDTH16 - wp = (addr & ~1); - port_width = 2; -#else - wp = (addr & ~3); - port_width = 4; -#endif - - /* save sernum if needed */ - if (addr >= CONFIG_SYS_FLASH_SN_SECTOR && addr < CONFIG_SYS_FLASH_SN_BASE) - { - u_long dest = CONFIG_SYS_FLASH_SN_BASE; - u_short *sn = (u_short *)gd->bd->bi_sernum; - - printf("(saving sernum)"); - for (i=0; i<4; i++) - { - if ((rc = write_data(info, dest, sn[i])) != 0) { - return (rc); - } - dest += port_width; - } - } - - /* - * 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, 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, data)) != 0) { - return (rc); - } - wp += port_width; - cnt -= port_width; - if (count++ > 0x800) - { - putc('.'); - 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, 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; - ulong start; - int flag; - - /* Check if Flash is (sufficiently) erased */ - if ((*addr & data) != data) { - printf("not erased at %08lx (%x)\n",(ulong)addr,*addr); - return (2); - } - /* Disable interrupts which might cause a timeout here */ - flag = disable_interrupts(); - - *addr = (FPW)0x00400040; /* write setup */ - *addr = data; - - /* re-enable interrupts if necessary */ - if (flag) - enable_interrupts(); - - start = get_timer (0); - - while (((status = *addr) & (FPW)0x00800080) != (FPW)0x00800080) { - if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) { - *addr = (FPW)0x00FF00FF; /* restore read mode */ - return (1); - } - } - - *addr = (FPW)0x00FF00FF; /* restore read mode */ - - return (0); -} |