X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=qemu%2Froms%2Fu-boot%2Fboard%2Futx8245%2Fflash.c;fp=qemu%2Froms%2Fu-boot%2Fboard%2Futx8245%2Fflash.c;h=1dfcb4151316034b1e4a49731a3ff27541ca2474;hb=e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb;hp=0000000000000000000000000000000000000000;hpb=9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00;p=kvmfornfv.git diff --git a/qemu/roms/u-boot/board/utx8245/flash.c b/qemu/roms/u-boot/board/utx8245/flash.c new file mode 100644 index 000000000..1dfcb4151 --- /dev/null +++ b/qemu/roms/u-boot/board/utx8245/flash.c @@ -0,0 +1,544 @@ +/* + * (C) Copyright 2001 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * (C) Copyright 2002 + * Gregory E. Allen, gallen@arlut.utexas.edu + * Matthew E. Karger, karger@arlut.utexas.edu + * Applied Research Laboratories, The University of Texas at Austin + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include + +#define ROM_CS0_START 0xFF800000 +#define ROM_CS1_START 0xFF000000 + +#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 FLASH_BANK_SIZE ((uint)(16 * 1024 * 1024)) /* max 16Mbyte */ +#define MAIN_SECT_SIZE 0x10000 +#define SECT_SIZE_32KB 0x8000 +#define SECT_SIZE_8KB 0x2000 + +flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; + +static int write_word (flash_info_t * info, ulong dest, ulong data); +#if 0 +static void write_via_fpu (vu_long * addr, ulong * data); +#endif +static __inline__ unsigned long get_msr (void); +static __inline__ void set_msr (unsigned long msr); + +/*flash command address offsets*/ +#define ADDR0 (0x555) +#define ADDR1 (0xAAA) +#define ADDR3 (0x001) + +#define FLASH_WORD_SIZE unsigned char + +/*---------------------------------------------------------------------*/ +/*#define DEBUG_FLASH 1 */ + +/*---------------------------------------------------------------------*/ + +unsigned long flash_init (void) +{ + int i; /* flash bank counter */ + int j; /* flash device sector counter */ + int k; /* flash size calculation loop counter */ + int N; /* pow(2,N) is flash size, but we don't have */ + ulong total_size = 0, device_size = 1; + unsigned char manuf_id, device_id; + + for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) { + vu_char *addr = (vu_char *) (CONFIG_SYS_FLASH_BASE + i * FLASH_BANK_SIZE); + + addr[0x555] = 0xAA; /* get manuf/device info command */ + addr[0x2AA] = 0x55; /* 3-cycle command */ + addr[0x555] = 0x90; + + manuf_id = addr[0]; /* read back manuf/device info */ + device_id = addr[1]; + + addr[0x55] = 0x98; /* CFI command */ + N = addr[0x27]; /* read back device_size = pow(2,N) */ + + for (k = 0; k < N; k++) /* calculate device_size = pow(2,N) */ + device_size *= 2; + + flash_info[i].size = device_size; + flash_info[i].sector_count = CONFIG_SYS_MAX_FLASH_SECT; + +#if defined DEBUG_FLASH + printf ("manuf_id = %x, device_id = %x\n", manuf_id, device_id); +#endif + /* find out what kind of flash we are using */ + if ((manuf_id == (uchar) (AMD_MANUFACT)) + && (device_id == AMD_ID_LV033C)) { + flash_info[i].flash_id = + ((FLASH_MAN_AMD & FLASH_VENDMASK) << 16) | + (FLASH_AM033C & FLASH_TYPEMASK); + + /* set individual sector start addresses */ + for (j = 0; j < flash_info[i].sector_count; j++) { + flash_info[i].start[j] = + (CONFIG_SYS_FLASH_BASE + i * FLASH_BANK_SIZE + + j * MAIN_SECT_SIZE); + } + } + + else if ((manuf_id == (uchar) (AMD_MANUFACT)) && + (device_id == AMD_ID_LV116DT)) { + flash_info[i].flash_id = + ((FLASH_MAN_AMD & FLASH_VENDMASK) << 16) | + (FLASH_AM160T & FLASH_TYPEMASK); + + /* set individual sector start addresses */ + for (j = 0; j < flash_info[i].sector_count; j++) { + flash_info[i].start[j] = + (CONFIG_SYS_FLASH_BASE + i * FLASH_BANK_SIZE + + j * MAIN_SECT_SIZE); + + if (j < (CONFIG_SYS_MAX_FLASH_SECT - 3)) { + flash_info[i].start[j] = + (CONFIG_SYS_FLASH_BASE + i * FLASH_BANK_SIZE + + j * MAIN_SECT_SIZE); + } else if (j == (CONFIG_SYS_MAX_FLASH_SECT - 3)) { + flash_info[i].start[j] = + (flash_info[i].start[j - 1] + SECT_SIZE_32KB); + + } else { + flash_info[i].start[j] = + (flash_info[i].start[j - 1] + SECT_SIZE_8KB); + } + } + } + + else { + flash_info[i].flash_id = FLASH_UNKNOWN; + addr[0] = 0xFF; + goto Done; + } + +#if defined DEBUG_FLASH + printf ("flash_id = 0x%08lX\n", flash_info[i].flash_id); +#endif + + addr[0] = 0xFF; + + memset (flash_info[i].protect, 0, CONFIG_SYS_MAX_FLASH_SECT); + + total_size += flash_info[i].size; + } + + /* Protect monitor and environment sectors + */ +#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE + flash_protect (FLAG_PROTECT_SET, CONFIG_SYS_MONITOR_BASE, + CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1, + &flash_info[0]); +#endif + +#if defined(CONFIG_ENV_IS_IN_FLASH) && defined(CONFIG_ENV_ADDR) + flash_protect (FLAG_PROTECT_SET, CONFIG_ENV_ADDR, + CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1, &flash_info[0]); +#endif + + Done: + return total_size; +} + +/*----------------------------------------------------------------------- + */ +void flash_print_info (flash_info_t * info) +{ + static const char unk[] = "Unknown"; + const char *mfct = unk, *type = unk; + unsigned int i; + + if (info->flash_id != FLASH_UNKNOWN) { + switch (info->flash_id & FLASH_VENDMASK) { + case FLASH_MAN_AMD: + mfct = "AMD"; + break; + case FLASH_MAN_FUJ: + mfct = "FUJITSU"; + break; + case FLASH_MAN_STM: + mfct = "STM"; + break; + case FLASH_MAN_SST: + mfct = "SST"; + break; + case FLASH_MAN_BM: + mfct = "Bright Microelectonics"; + break; + case FLASH_MAN_INTEL: + mfct = "Intel"; + break; + } + + switch (info->flash_id & FLASH_TYPEMASK) { + case FLASH_AM033C: + type = "AM29LV033C (32 Mbit, uniform sector size)"; + break; + case FLASH_AM160T: + type = "AM29LV160T (16 Mbit, top boot sector)"; + break; + case FLASH_AM040: + type = "AM29F040B (512K * 8, uniform sector size)"; + break; + case FLASH_AM400B: + type = "AM29LV400B (4 Mbit, bottom boot sect)"; + break; + case FLASH_AM400T: + type = "AM29LV400T (4 Mbit, top boot sector)"; + break; + case FLASH_AM800B: + type = "AM29LV800B (8 Mbit, bottom boot sect)"; + break; + case FLASH_AM800T: + type = "AM29LV800T (8 Mbit, top boot sector)"; + break; + case FLASH_AM320B: + type = "AM29LV320B (32 Mbit, bottom boot sect)"; + break; + case FLASH_AM320T: + type = "AM29LV320T (32 Mbit, top boot sector)"; + break; + case FLASH_STM800AB: + type = "M29W800AB (8 Mbit, bottom boot sect)"; + break; + case FLASH_SST800A: + type = "SST39LF/VF800 (8 Mbit, uniform sector size)"; + break; + case FLASH_SST160A: + type = "SST39LF/VF160 (16 Mbit, uniform sector size)"; + break; + } + } + + printf ("\n Brand: %s Type: %s\n" + " Size: %lu KB in %d Sectors\n", + mfct, type, info->size >> 10, info->sector_count); + + printf (" Sector Start Addresses:"); + + for (i = 0; i < info->sector_count; i++) { + unsigned long size; + unsigned int erased; + unsigned long *flash = (unsigned long *) info->start[i]; + + /* + * Check if whole sector is erased + */ + size = (i != (info->sector_count - 1)) ? + (info->start[i + 1] - info->start[i]) >> 2 : + (info->start[0] + info->size - info->start[i]) >> 2; + + for (flash = (unsigned long *) info->start[i], erased = 1; + (flash != (unsigned long *) info->start[i] + size) && erased; + flash++) + erased = *flash == ~0x0UL; + + printf ("%s %08lX %s %s", + (i % 5) ? "" : "\n ", + info->start[i], + erased ? "E" : " ", info->protect[i] ? "RO" : " "); + } + + puts ("\n"); + return; +} + +/*----------------------------------------------------------------------- + */ + +int flash_erase (flash_info_t * info, int s_first, int s_last) +{ + volatile FLASH_WORD_SIZE *addr = (FLASH_WORD_SIZE *) (info->start[0]); + int flag, prot, sect, l_sect; + ulong start, now, last; + unsigned char sh8b; + + 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_MAN_STM | FLASH_AMD_COMP))) { + printf ("Can't erase unknown flash type - 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"); + } + + l_sect = -1; + + /* Check the ROM CS */ + if ((info->start[0] >= ROM_CS1_START) + && (info->start[0] < ROM_CS0_START)) + sh8b = 3; + else + sh8b = 0; + + /* Disable interrupts which might cause a timeout here */ + flag = disable_interrupts (); + + addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00AA00AA; + addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE) 0x00550055; + addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00800080; + addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00AA00AA; + addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE) 0x00550055; + + /* Start erase on unprotected sectors */ + for (sect = s_first; sect <= s_last; sect++) { + if (info->protect[sect] == 0) { /* not protected */ + addr = (FLASH_WORD_SIZE *) (info->start[0] + ((info-> + start[sect] - + info-> + start[0]) << + sh8b)); + + if (info->flash_id & FLASH_MAN_SST) { + addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00AA00AA; + addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE) 0x00550055; + addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00800080; + addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00AA00AA; + addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE) 0x00550055; + addr[0] = (FLASH_WORD_SIZE) 0x00500050; /* block erase */ + udelay (30000); /* wait 30 ms */ + } else { + addr[0] = (FLASH_WORD_SIZE) 0x00300030; /* sector erase */ + } + + 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 = (FLASH_WORD_SIZE *) (info->start[0] + ((info->start[l_sect] - + info-> + start[0]) << sh8b)); + while ((addr[0] & (FLASH_WORD_SIZE) 0x00800080) != + (FLASH_WORD_SIZE) 0x00800080) { + 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 */ + serial_putc ('.'); + last = now; + } + } + + DONE: + /* reset to read mode */ + addr = (FLASH_WORD_SIZE *) info->start[0]; + addr[0] = (FLASH_WORD_SIZE) 0x00F000F0; /* reset bank */ + + 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; i < l; ++i, ++cp) { + data = (data << 8) | (*(uchar *) cp); + } + for (; i < 4 && cnt > 0; ++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 FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *) info->start[0]; + volatile FLASH_WORD_SIZE *dest2; + volatile FLASH_WORD_SIZE *data2 = (FLASH_WORD_SIZE *) & data; + ulong start; + int flag; + int i; + unsigned char sh8b; + + /* Check the ROM CS */ + if ((info->start[0] >= ROM_CS1_START) + && (info->start[0] < ROM_CS0_START)) + sh8b = 3; + else + sh8b = 0; + + dest2 = (FLASH_WORD_SIZE *) (((dest - info->start[0]) << sh8b) + + info->start[0]); + + /* Check if Flash is (sufficiently) erased */ + if ((*dest2 & (FLASH_WORD_SIZE) data) != (FLASH_WORD_SIZE) data) { + return (2); + } + /* Disable interrupts which might cause a timeout here */ + flag = disable_interrupts (); + + for (i = 0; i < 4 / sizeof (FLASH_WORD_SIZE); i++) { + addr2[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00AA00AA; + addr2[ADDR1 << sh8b] = (FLASH_WORD_SIZE) 0x00550055; + addr2[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00A000A0; + + dest2[i << sh8b] = data2[i]; + + /* re-enable interrupts if necessary */ + if (flag) + enable_interrupts (); + + /* data polling for D7 */ + start = get_timer (0); + while ((dest2[i << sh8b] & (FLASH_WORD_SIZE) 0x00800080) != + (data2[i] & (FLASH_WORD_SIZE) 0x00800080)) { + if (get_timer (start) > CONFIG_SYS_FLASH_WRITE_TOUT) { + return (1); + } + } + } + + return (0); +} + +/*----------------------------------------------------------------------- + */ +#if 0 +static void write_via_fpu (vu_long * addr, ulong * data) +{ + __asm__ __volatile__ ("lfd 1, 0(%0)"::"r" (data)); + __asm__ __volatile__ ("stfd 1, 0(%0)"::"r" (addr)); +} +#endif + +/*----------------------------------------------------------------------- + */ +static __inline__ unsigned long get_msr (void) +{ + unsigned long msr; + + __asm__ __volatile__ ("mfmsr %0":"=r" (msr):); + + return msr; +} + +static __inline__ void set_msr (unsigned long msr) +{ + __asm__ __volatile__ ("mtmsr %0"::"r" (msr)); +}