X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=qemu%2Froms%2Fu-boot%2Fboard%2Fiphase4539%2Fflash.c;fp=qemu%2Froms%2Fu-boot%2Fboard%2Fiphase4539%2Fflash.c;h=3c2dad67b50461804e36f0cb8250bc0f0dad8713;hb=e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb;hp=0000000000000000000000000000000000000000;hpb=9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00;p=kvmfornfv.git diff --git a/qemu/roms/u-boot/board/iphase4539/flash.c b/qemu/roms/u-boot/board/iphase4539/flash.c new file mode 100644 index 000000000..3c2dad67b --- /dev/null +++ b/qemu/roms/u-boot/board/iphase4539/flash.c @@ -0,0 +1,474 @@ +/* + * (C) Copyright 2001 + * Josh Huber , Mission Critical Linux, Inc. + * + * (C) Copyright 2002 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * Adapted for Interphase 4539 by Wolfgang Grandegger . + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include + +flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; + +extern int hwc_flash_size(void); +static ulong flash_get_size (u32 addr, flash_info_t *info); +static int flash_get_offsets (u32 base, flash_info_t *info); +static int write_word (flash_info_t *info, ulong dest, ulong data); +static void flash_reset (u32 addr); + +#define out8(a,v) *(volatile unsigned char*)(a) = v +#define in8(a) *(volatile unsigned char*)(a) +#define in32(a) *(volatile unsigned long*)(a) +#define iobarrier_rw() eieio() + +unsigned long flash_init (void) +{ + unsigned int i; + unsigned long flash_size = 0; + unsigned long bank_size; + unsigned int bank = 0; + + /* Init: no FLASHes known */ + for (i=0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) { + flash_info[i].flash_id = FLASH_UNKNOWN; + flash_info[i].sector_count = 0; + flash_info[i].size = 0; + } + + /* Initialise the BOOT Flash */ + if (bank == CONFIG_SYS_MAX_FLASH_BANKS) { + puts ("Warning: not all Flashes are initialised !"); + return flash_size; + } + + bank_size = flash_get_size (CONFIG_SYS_FLASH_BASE, flash_info + bank); + if (bank_size) { +#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE && \ + CONFIG_SYS_MONITOR_BASE < CONFIG_SYS_FLASH_BASE + CONFIG_SYS_MAX_FLASH_SIZE + /* monitor protection ON by default */ + flash_protect(FLAG_PROTECT_SET, + CONFIG_SYS_MONITOR_BASE, + CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1, + flash_info + bank); +#endif + +#ifdef CONFIG_ENV_IS_IN_FLASH + /* ENV protection ON by default */ + flash_protect(FLAG_PROTECT_SET, + CONFIG_ENV_ADDR, + CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1, + flash_info + bank); +#endif + + /* HWC protection ON by default */ + flash_protect(FLAG_PROTECT_SET, + CONFIG_SYS_FLASH_BASE, + CONFIG_SYS_FLASH_BASE + 0x10000 - 1, + flash_info + bank); + + flash_size += bank_size; + bank++; + } else { + puts ("Warning: the BOOT Flash is not initialised !"); + } + + return flash_size; +} + +/* + * The following code cannot be run from FLASH! + */ +static ulong flash_get_size (u32 addr, flash_info_t *info) +{ + volatile uchar value; +#if 0 + int i; +#endif + + /* Write auto select command: read Manufacturer ID */ + out8(addr + 0x0555, 0xAA); + iobarrier_rw(); + udelay(10); + out8(addr + 0x02AA, 0x55); + iobarrier_rw(); + udelay(10); + out8(addr + 0x0555, 0x90); + iobarrier_rw(); + udelay(10); + + value = in8(addr); + iobarrier_rw(); + udelay(10); + switch (value | (value << 16)) { + case AMD_MANUFACT: + info->flash_id = FLASH_MAN_AMD; + break; + + case FUJ_MANUFACT: + info->flash_id = FLASH_MAN_FUJ; + break; + + default: + info->flash_id = FLASH_UNKNOWN; + flash_reset (addr); + return 0; + } + + value = in8(addr + 1); /* device ID */ + iobarrier_rw(); + + switch (value) { + case AMD_ID_LV033C: + info->flash_id += FLASH_AM033C; + info->size = hwc_flash_size(); + if (info->size > CONFIG_SYS_MAX_FLASH_SIZE) { + printf("U-Boot supports only %d MB\n", + CONFIG_SYS_MAX_FLASH_SIZE); + info->size = CONFIG_SYS_MAX_FLASH_SIZE; + } + info->sector_count = info->size / 0x10000; + break; /* => 4 MB */ + + default: + info->flash_id = FLASH_UNKNOWN; + flash_reset (addr); + return (0); /* => no or unknown flash */ + + } + + if (!flash_get_offsets (addr, info)) { + flash_reset (addr); + return 0; + } + +#if 0 + /* check for protected sectors */ + for (i = 0; i < info->sector_count; i++) { + /* read sector protection at sector address, (A7 .. A0) = 0x02 */ + /* D0 = 1 if protected */ + value = in8(info->start[i] + 2); + iobarrier_rw(); + info->protect[i] = (value & 1) != 0; + } +#endif + + /* + * Reset bank to read mode + */ + flash_reset (addr); + + return (info->size); +} + +static int flash_get_offsets (u32 base, flash_info_t *info) +{ + unsigned int i, size; + + switch (info->flash_id & FLASH_TYPEMASK) { + case FLASH_AM033C: + /* set sector offsets for uniform sector type */ + size = info->size / info->sector_count; + for (i = 0; i < info->sector_count; i++) { + info->start[i] = base + i * size; + } + break; + default: + return 0; + } + + return 1; +} + +int flash_erase (flash_info_t *info, int s_first, int s_last) +{ + volatile u32 addr = info->start[0]; + int flag, prot, sect, l_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; + } + + if (info->flash_id == FLASH_UNKNOWN || + info->flash_id > FLASH_AMD_COMP) { + 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"); + } + + l_sect = -1; + + /* Disable interrupts which might cause a timeout here */ + flag = disable_interrupts(); + + out8(addr + 0x555, 0xAA); + iobarrier_rw(); + out8(addr + 0x2AA, 0x55); + iobarrier_rw(); + out8(addr + 0x555, 0x80); + iobarrier_rw(); + out8(addr + 0x555, 0xAA); + iobarrier_rw(); + out8(addr + 0x2AA, 0x55); + iobarrier_rw(); + + /* Start erase on unprotected sectors */ + for (sect = s_first; sect<=s_last; sect++) { + if (info->protect[sect] == 0) { /* not protected */ + addr = info->start[sect]; + out8(addr, 0x30); + iobarrier_rw(); + l_sect = sect; + } + } + + /* re-enable interrupts if necessary */ + if (flag) + enable_interrupts(); + + /* wait at least 80us - let's wait 1 ms */ + udelay (1000); + + /* + * We wait for the last triggered sector + */ + if (l_sect < 0) + goto DONE; + + start = get_timer (0); + last = start; + addr = info->start[l_sect]; + while ((in8(addr) & 0x80) != 0x80) { + if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) { + printf ("Timeout\n"); + return 1; + } + /* show that we're waiting */ + if ((now - last) > 1000) { /* every second */ + putc ('.'); + last = now; + } + iobarrier_rw(); + } + +DONE: + /* reset to read mode */ + flash_reset (info->start[0]); + + printf (" done\n"); + return 0; +} + +/* + * 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 cp, wp, data; + int i, l, rc; + + wp = (addr & ~3); /* get lower word aligned address */ + + /* + * handle unaligned start bytes + */ + if ((l = addr - wp) != 0) { + data = 0; + for (i=0, cp=wp; i0; ++i) { + data = (data << 8) | *src++; + --cnt; + ++cp; + } + for (; cnt==0 && i<4; ++i, ++cp) { + data = (data << 8) | (*(uchar *)cp); + } + + if ((rc = write_word(info, wp, data)) != 0) { + return (rc); + } + wp += 4; + } + + /* + * handle word aligned part + */ + while (cnt >= 4) { + data = 0; + for (i=0; i<4; ++i) { + data = (data << 8) | *src++; + } + if ((rc = write_word(info, wp, data)) != 0) { + return (rc); + } + wp += 4; + cnt -= 4; + } + + if (cnt == 0) { + return (0); + } + + /* + * handle unaligned tail bytes + */ + data = 0; + for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) { + data = (data << 8) | *src++; + --cnt; + } + for (; i<4; ++i, ++cp) { + data = (data << 8) | (*(uchar *)cp); + } + + return (write_word(info, wp, data)); +} + +/* + * Write a word to Flash, returns: + * 0 - OK + * 1 - write timeout + * 2 - Flash not erased + */ +static int write_word (flash_info_t *info, ulong dest, ulong data) +{ + volatile u32 addr = info->start[0]; + ulong start; + int flag, i; + + /* Check if Flash is (sufficiently) erased */ + if ((in32(dest) & data) != data) { + return (2); + } + /* Disable interrupts which might cause a timeout here */ + flag = disable_interrupts(); + + /* first, perform an unlock bypass command to speed up flash writes */ + out8(addr + 0x555, 0xAA); + iobarrier_rw(); + out8(addr + 0x2AA, 0x55); + iobarrier_rw(); + out8(addr + 0x555, 0x20); + iobarrier_rw(); + + /* write each byte out */ + for (i = 0; i < 4; i++) { + char *data_ch = (char *)&data; + out8(addr, 0xA0); + iobarrier_rw(); + out8(dest+i, data_ch[i]); + iobarrier_rw(); + udelay(10); /* XXX */ + } + + /* we're done, now do an unlock bypass reset */ + out8(addr, 0x90); + iobarrier_rw(); + out8(addr, 0x00); + iobarrier_rw(); + + /* re-enable interrupts if necessary */ + if (flag) + enable_interrupts(); + + /* data polling for D7 */ + start = get_timer (0); + while ((in32(dest) & 0x80808080) != (data & 0x80808080)) { + if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) { + return (1); + } + iobarrier_rw(); + } + + flash_reset (addr); + + return (0); +} + +/* + * Reset bank to read mode + */ +static void flash_reset (u32 addr) +{ + out8(addr, 0xF0); /* reset bank */ + iobarrier_rw(); +} + +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_AMD: printf ("AMD "); break; + case FLASH_MAN_FUJ: printf ("FUJITSU "); break; + case FLASH_MAN_BM: printf ("BRIGHT MICRO "); break; + default: printf ("Unknown Vendor "); break; + } + + switch (info->flash_id & FLASH_TYPEMASK) { + case FLASH_AM033C: printf ("AM29LV033C (32 Mbit, uniform sectors)\n"); + break; + default: printf ("Unknown Chip Type\n"); + break; + } + + if (info->size % 0x100000 == 0) { + printf (" Size: %ld MB in %d Sectors\n", + info->size / 0x100000, info->sector_count); + } + else if (info->size % 0x400 == 0) { + printf (" Size: %ld KB in %d Sectors\n", + info->size / 0x400, info->sector_count); + } + else { + printf (" Size: %ld B in %d Sectors\n", + info->size, info->sector_count); + } + + printf (" Sector Start Addresses:"); + for (i=0; isector_count; ++i) { + if ((i % 5) == 0) + printf ("\n "); + printf (" %08lX%s", + info->start[i], + info->protect[i] ? " (RO)" : " " + ); + } + printf ("\n"); +}