X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=qemu%2Froms%2Fu-boot%2Fboard%2Fa3000%2Fflash.c;fp=qemu%2Froms%2Fu-boot%2Fboard%2Fa3000%2Fflash.c;h=f2dd3c2f17a83ed1af2642d561f9a85901a9d447;hb=e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb;hp=0000000000000000000000000000000000000000;hpb=9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00;p=kvmfornfv.git diff --git a/qemu/roms/u-boot/board/a3000/flash.c b/qemu/roms/u-boot/board/a3000/flash.c new file mode 100644 index 000000000..f2dd3c2f1 --- /dev/null +++ b/qemu/roms/u-boot/board/a3000/flash.c @@ -0,0 +1,438 @@ +/* + * (C) Copyright 2001 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + + +#include +#include + +#if defined(CONFIG_ENV_IS_IN_FLASH) +# ifndef CONFIG_ENV_ADDR +# define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET) +# endif +# ifndef CONFIG_ENV_SIZE +# define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE +# endif +# ifndef CONFIG_ENV_SECT_SIZE +# define CONFIG_ENV_SECT_SIZE CONFIG_ENV_SIZE +# endif +#endif + + +/*---------------------------------------------------------------------*/ +#define DEBUG_FLASH + +#ifdef DEBUG_FLASH +#define DEBUGF(fmt,args...) printf(fmt ,##args) +#else +#define DEBUGF(fmt,args...) +#endif +/*---------------------------------------------------------------------*/ + +flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */ + +/*----------------------------------------------------------------------- + * Functions + */ +static ulong flash_get_size (vu_char *addr, flash_info_t *info); +static int write_data (flash_info_t *info, uchar *dest, uchar data); +static void flash_get_offsets (ulong base, flash_info_t *info); + +#define BS(b) (b) +#define BYTEME(x) ((x) & 0xFF) + +/*----------------------------------------------------------------------- + */ + +unsigned long flash_init (void) +{ + unsigned long flash_banks[CONFIG_SYS_MAX_FLASH_BANKS] = CONFIG_SYS_FLASH_BANKS; + unsigned long size, size_b[CONFIG_SYS_MAX_FLASH_BANKS]; + + int i; + + /* Init: no FLASHes known */ + for (i=0; i= CONFIG_SYS_FLASH_BASE + DEBUGF("protect monitor %x @ %x\n", CONFIG_SYS_MONITOR_BASE, CONFIG_SYS_MONITOR_LEN); + /* monitor protection ON by default */ + flash_protect(FLAG_PROTECT_SET, + CONFIG_SYS_MONITOR_BASE, + CONFIG_SYS_MONITOR_BASE+CONFIG_SYS_MONITOR_LEN-1, + &flash_info[0]); +#endif + +#ifdef CONFIG_ENV_IS_IN_FLASH + /* ENV protection ON by default */ + DEBUGF("protect environtment %x @ %x\n", CONFIG_ENV_ADDR, CONFIG_ENV_SECT_SIZE); + flash_protect(FLAG_PROTECT_SET, + CONFIG_ENV_ADDR, + CONFIG_ENV_ADDR+CONFIG_ENV_SECT_SIZE-1, + &flash_info[0]); +#endif + + size = 0; + DEBUGF("## Final Flash bank sizes: "); + for (i=0; iflash_id == FLASH_UNKNOWN) { + return; + } + + switch (info->flash_id & FLASH_VENDMASK) { + case FLASH_MAN_INTEL: + for (i = 0; i < info->sector_count; i++) { + info->start[i] = base; + base += 0x00020000; /* 128k per bank */ + } + return; + + default: + printf ("Don't know sector ofsets for flash type 0x%lx\n", info->flash_id); + return; + } +} + +/*----------------------------------------------------------------------- + */ +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_SST: printf ("SST "); break; + case FLASH_MAN_STM: printf ("STM "); break; + case FLASH_MAN_INTEL: printf ("Intel "); break; + case FLASH_MAN_MT: printf ("MT "); break; + default: printf ("Unknown Vendor "); break; + } + + switch (info->flash_id & FLASH_TYPEMASK) { + case FLASH_28F320J3A: + printf ("28F320J3A (32Mbit = 128K x 32)\n"); + break; + case FLASH_28F640J3A: + printf ("28F640J3A (64Mbit = 128K x 64)\n"); + break; + case FLASH_28F128J3A: + printf ("28F128J3A (128Mbit = 128K x 128)\n"); + break; + default: + printf ("Unknown Chip Type\n"); + break; + } + +#if 1 + if (info->size >= (1 << 20)) { + i = 20; + } else { + i = 10; + } + printf (" Size: %ld %cB in %d Sectors\n", + info->size >> i, + (i == 20) ? 'M' : 'k', + 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"); +#endif + return; +} + +/*----------------------------------------------------------------------- + */ + + +/*----------------------------------------------------------------------- + */ + +/* + * The following code cannot be run from FLASH! + */ +static ulong flash_get_size (vu_char *addr, flash_info_t *info) +{ + vu_char manuf, device; + + addr[0] = BS(0x90); + manuf = BS(addr[0]); + DEBUGF("Manuf. ID @ 0x%08lx: 0x%08x\n", (ulong)addr, manuf); + + switch (manuf) { + case BYTEME(AMD_MANUFACT): + info->flash_id = FLASH_MAN_AMD; + break; + case BYTEME(FUJ_MANUFACT): + info->flash_id = FLASH_MAN_FUJ; + break; + case BYTEME(SST_MANUFACT): + info->flash_id = FLASH_MAN_SST; + break; + case BYTEME(STM_MANUFACT): + info->flash_id = FLASH_MAN_STM; + break; + case BYTEME(INTEL_MANUFACT): + info->flash_id = FLASH_MAN_INTEL; + break; + default: + info->flash_id = FLASH_UNKNOWN; + info->sector_count = 0; + info->size = 0; + addr[0] = BS(0xFF); /* restore read mode, (yes, BS is a NOP) */ + return 0; /* no or unknown flash */ + } + + device = BS(addr[2]); /* device ID */ + + DEBUGF("Device ID @ 0x%08lx: 0x%08x\n", (ulong)(&addr[1]), device); + + switch (device) { + case BYTEME(INTEL_ID_28F320J3A): + info->flash_id += FLASH_28F320J3A; + info->sector_count = 32; + info->size = 0x00400000; + break; /* => 4 MB */ + + case BYTEME(INTEL_ID_28F640J3A): + info->flash_id += FLASH_28F640J3A; + info->sector_count = 64; + info->size = 0x00800000; + break; /* => 8 MB */ + + case BYTEME(INTEL_ID_28F128J3A): + info->flash_id += FLASH_28F128J3A; + info->sector_count = 128; + info->size = 0x01000000; + break; /* => 16 MB */ + + default: + info->flash_id = FLASH_UNKNOWN; + addr[0] = BS(0xFF); /* restore read mode (yes, a NOP) */ + return 0; /* => no or unknown flash */ + + } + + 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] = BS(0xFF); /* restore read mode */ + + return (info->size); +} + + +/*----------------------------------------------------------------------- + */ + +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; + } + + if ((info->flash_id & FLASH_VENDMASK) != FLASH_MAN_INTEL) { + printf ("Can erase only Intel flash types - 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; + /* Start erase on unprotected sectors */ + for (sect = s_first; sect<=s_last; sect++) { + if (info->protect[sect] == 0) { /* not protected */ + vu_char *addr = (vu_char *)(info->start[sect]); + unsigned long status; + + /* Disable interrupts which might cause a timeout here */ + flag = disable_interrupts(); + + *addr = BS(0x50); /* clear status register */ + *addr = BS(0x20); /* erase setup */ + *addr = BS(0xD0); /* erase confirm */ + + /* re-enable interrupts if necessary */ + if (flag) { + enable_interrupts(); + } + + /* wait at least 80us - let's wait 1 ms */ + udelay (1000); + + while (((status = BS(*addr)) & BYTEME(0x00800080)) != BYTEME(0x00800080)) { + if ((now=get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) { + printf ("Timeout\n"); + *addr = BS(0xB0); /* suspend erase */ + *addr = BS(0xFF); /* reset to read mode */ + return 1; + } + + /* show that we're waiting */ + if ((now - last) > 1000) { /* every second */ + putc ('.'); + last = now; + } + } + + *addr = BS(0xFF); /* reset to read mode */ + } + } + printf (" done\n"); + return 0; +} + +/*----------------------------------------------------------------------- + * Copy memory to flash, returns: + * 0 - OK + * 1 - write timeout + * 2 - Flash not erased + * 4 - Flash not identified + */ + +#define FLASH_WIDTH 1 /* flash bus width in bytes */ + +int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt) +{ + uchar *wp = (uchar *)addr; + int rc; + + if (info->flash_id == FLASH_UNKNOWN) { + return 4; + } + + while (cnt > 0) { + if ((rc = write_data(info, wp, *src)) != 0) { + return rc; + } + wp++; + src++; + cnt--; + } + + return cnt; +} + +/*----------------------------------------------------------------------- + * Write a word to Flash, returns: + * 0 - OK + * 1 - write timeout + * 2 - Flash not erased + */ +static int write_data (flash_info_t *info, uchar *dest, uchar data) +{ + vu_char *addr = (vu_char *)dest; + ulong status; + ulong start; + int flag; + + /* Check if Flash is (sufficiently) erased */ + if ((BS(*addr) & data) != data) { + return 2; + } + /* Disable interrupts which might cause a timeout here */ + flag = disable_interrupts(); + + *addr = BS(0x40); /* write setup */ + *addr = data; + + /* re-enable interrupts if necessary */ + if (flag) { + enable_interrupts(); + } + + start = get_timer (0); + + while (((status = BS(*addr)) & BYTEME(0x00800080)) != BYTEME(0x00800080)) { + if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) { + *addr = BS(0xFF); /* restore read mode */ + return 1; + } + } + + *addr = BS(0xFF); /* restore read mode */ + + return 0; +} + +/*----------------------------------------------------------------------- + */