X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;ds=sidebyside;f=qemu%2Froms%2Fu-boot%2Fboard%2Fscb9328%2Fflash.c;fp=qemu%2Froms%2Fu-boot%2Fboard%2Fscb9328%2Fflash.c;h=e3a582f3dcf9cc0d38c249ef78314f14ecaaa469;hb=e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb;hp=0000000000000000000000000000000000000000;hpb=9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00;p=kvmfornfv.git diff --git a/qemu/roms/u-boot/board/scb9328/flash.c b/qemu/roms/u-boot/board/scb9328/flash.c new file mode 100644 index 000000000..e3a582f3d --- /dev/null +++ b/qemu/roms/u-boot/board/scb9328/flash.c @@ -0,0 +1,308 @@ +/* + * Copyright (C) 2003 ETC s.r.o. + * + * This code was inspired by Marius Groeger and Kyle Harris code + * available in other board ports for U-Boot + * + * SPDX-License-Identifier: GPL-2.0+ + * + * Written by Peter Figuli , 2003. + */ + +#include +#include "intel.h" + + +/* + * This code should handle CFI FLASH memory device. This code is very + * minimalistic approach without many essential error handling code as well. + * Because U-Boot actually is missing smart handling of FLASH device, + * we just set flash_id to anything else to FLASH_UNKNOW, so common code + * can call us without any restrictions. + * TODO: Add CFI Query, to be able to determine FLASH device. + * TODO: Add error handling code + * NOTE: This code was tested with BUS_WIDTH 4 and ITERLEAVE 2 only, but + * hopefully may work with other configurations. + */ + +#if ( SCB9328_FLASH_BUS_WIDTH == 1 ) +# define FLASH_BUS vu_char +# define FLASH_BUS_RET u_char +# if ( SCB9328_FLASH_INTERLEAVE == 1 ) +# define FLASH_CMD( x ) x +# else +# error "With 8bit bus only one chip is allowed" +# endif + + +#elif ( SCB9328_FLASH_BUS_WIDTH == 2 ) +# define FLASH_BUS vu_short +# define FLASH_BUS_RET u_short +# if ( SCB9328_FLASH_INTERLEAVE == 1 ) +# define FLASH_CMD( x ) x +# elif ( SCB9328_FLASH_INTERLEAVE == 2 ) +# define FLASH_CMD( x ) (( x << 8 )| x ) +# else +# error "With 16bit bus only 1 or 2 chip(s) are allowed" +# endif + + +#elif ( SCB9328_FLASH_BUS_WIDTH == 4 ) +# define FLASH_BUS vu_long +# define FLASH_BUS_RET u_long +# if ( SCB9328_FLASH_INTERLEAVE == 1 ) +# define FLASH_CMD( x ) x +# elif ( SCB9328_FLASH_INTERLEAVE == 2 ) +# define FLASH_CMD( x ) (( x << 16 )| x ) +# elif ( SCB9328_FLASH_INTERLEAVE == 4 ) +# define FLASH_CMD( x ) (( x << 24 )|( x << 16 ) ( x << 8 )| x ) +# else +# error "With 32bit bus only 1,2 or 4 chip(s) are allowed" +# endif + +#else +# error "Flash bus width might be 1,2,4 for 8,16,32 bit configuration" +#endif + + +flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; + +static FLASH_BUS_RET flash_status_reg (void) +{ + + FLASH_BUS *addr = (FLASH_BUS *) 0; + + *addr = FLASH_CMD (CFI_INTEL_CMD_READ_STATUS_REGISTER); + + return *addr; +} + +static int flash_ready (ulong timeout) +{ + int ok = 1; + ulong start; + + start = get_timer(0); + while ((flash_status_reg () & FLASH_CMD (CFI_INTEL_SR_READY)) != + FLASH_CMD (CFI_INTEL_SR_READY)) { + if (get_timer(start) > timeout && timeout != 0) { + ok = 0; + break; + } + } + return ok; +} + +#if ( CONFIG_SYS_MAX_FLASH_BANKS != 1 ) +# error "SCB9328 platform has only one flash bank!" +#endif + + +ulong flash_init (void) +{ + int i; + unsigned long address = SCB9328_FLASH_BASE; + + flash_info[0].size = SCB9328_FLASH_BANK_SIZE; + flash_info[0].sector_count = CONFIG_SYS_MAX_FLASH_SECT; + flash_info[0].flash_id = INTEL_MANUFACT; + memset (flash_info[0].protect, 0, CONFIG_SYS_MAX_FLASH_SECT); + + for (i = 0; i < CONFIG_SYS_MAX_FLASH_SECT; i++) { + flash_info[0].start[i] = address; +#ifdef SCB9328_FLASH_UNLOCK + /* Some devices are hw locked after start. */ + *((FLASH_BUS *) address) = FLASH_CMD (CFI_INTEL_CMD_LOCK_SETUP); + *((FLASH_BUS *) address) = FLASH_CMD (CFI_INTEL_CMD_UNLOCK_BLOCK); + flash_ready (0); + *((FLASH_BUS *) address) = FLASH_CMD (CFI_INTEL_CMD_READ_ARRAY); +#endif + address += SCB9328_FLASH_SECT_SIZE; + } + + flash_protect (FLAG_PROTECT_SET, + CONFIG_SYS_FLASH_BASE, + CONFIG_SYS_FLASH_BASE + monitor_flash_len - 1, + &flash_info[0]); + + flash_protect (FLAG_PROTECT_SET, + CONFIG_ENV_ADDR, + CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1, &flash_info[0]); + + return SCB9328_FLASH_BANK_SIZE; +} + +void flash_print_info (flash_info_t * info) +{ + int i; + + printf (" Intel vendor\n"); + 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)) { + 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, non_protected = 0, sector; + int rc = ERR_OK; + + FLASH_BUS *address; + + for (sector = s_first; sector <= s_last; sector++) { + if (!info->protect[sector]) { + non_protected++; + } + } + + if (!non_protected) { + return ERR_PROTECTED; + } + + /* + * Disable interrupts which might cause a timeout + * here. Remember that our exception vectors are + * at address 0 in the flash, and we don't want a + * (ticker) exception to happen while the flash + * chip is in programming mode. + */ + flag = disable_interrupts (); + + + /* Start erase on unprotected sectors */ + for (sector = s_first; sector <= s_last && !ctrlc (); sector++) { + if (info->protect[sector]) { + printf ("Protected sector %2d skipping...\n", sector); + continue; + } else { + printf ("Erasing sector %2d ... ", sector); + } + + address = (FLASH_BUS *) (info->start[sector]); + + *address = FLASH_CMD (CFI_INTEL_CMD_BLOCK_ERASE); + *address = FLASH_CMD (CFI_INTEL_CMD_CONFIRM); + if (flash_ready (CONFIG_SYS_FLASH_ERASE_TOUT)) { + *address = FLASH_CMD (CFI_INTEL_CMD_CLEAR_STATUS_REGISTER); + printf ("ok.\n"); + } else { + *address = FLASH_CMD (CFI_INTEL_CMD_SUSPEND); + rc = ERR_TIMOUT; + printf ("timeout! Aborting...\n"); + break; + } + *address = FLASH_CMD (CFI_INTEL_CMD_READ_ARRAY); + } + if (ctrlc ()) + printf ("User Interrupt!\n"); + + /* allow flash to settle - wait 10 ms */ + udelay_masked (10000); + if (flag) { + enable_interrupts (); + } + + return rc; +} + +static int write_data (flash_info_t * info, ulong dest, FLASH_BUS data) +{ + FLASH_BUS *address = (FLASH_BUS *) dest; + int rc = ERR_OK; + int flag; + + /* Check if Flash is (sufficiently) erased */ + if ((*address & data) != data) { + return ERR_NOT_ERASED; + } + + /* + * Disable interrupts which might cause a timeout + * here. Remember that our exception vectors are + * at address 0 in the flash, and we don't want a + * (ticker) exception to happen while the flash + * chip is in programming mode. + */ + + flag = disable_interrupts (); + + *address = FLASH_CMD (CFI_INTEL_CMD_CLEAR_STATUS_REGISTER); + *address = FLASH_CMD (CFI_INTEL_CMD_PROGRAM1); + *address = data; + + if (!flash_ready (CONFIG_SYS_FLASH_WRITE_TOUT)) { + *address = FLASH_CMD (CFI_INTEL_CMD_SUSPEND); + rc = ERR_TIMOUT; + printf ("timeout! Aborting...\n"); + } + + *address = FLASH_CMD (CFI_INTEL_CMD_READ_ARRAY); + if (flag) { + enable_interrupts (); + } + + return rc; +} + +int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt) +{ + ulong read_addr, write_addr; + FLASH_BUS data; + int i, result = ERR_OK; + + + read_addr = addr & ~(sizeof (FLASH_BUS) - 1); + write_addr = read_addr; + if (read_addr != addr) { + data = 0; + for (i = 0; i < sizeof (FLASH_BUS); i++) { + if (read_addr < addr || cnt == 0) { + data |= *((uchar *) read_addr) << i * 8; + } else { + data |= (*src++) << i * 8; + cnt--; + } + read_addr++; + } + if ((result = write_data (info, write_addr, data)) != ERR_OK) { + return result; + } + write_addr += sizeof (FLASH_BUS); + } + for (; cnt >= sizeof (FLASH_BUS); cnt -= sizeof (FLASH_BUS)) { + if ((result = write_data (info, write_addr, + *((FLASH_BUS *) src))) != ERR_OK) { + return result; + } + write_addr += sizeof (FLASH_BUS); + src += sizeof (FLASH_BUS); + } + if (cnt > 0) { + read_addr = write_addr; + data = 0; + for (i = 0; i < sizeof (FLASH_BUS); i++) { + if (cnt > 0) { + data |= (*src++) << i * 8; + cnt--; + } else { + data |= *((uchar *) read_addr) << i * 8; + } + read_addr++; + } + if ((result = write_data (info, write_addr, data)) != 0) { + return result; + } + } + return ERR_OK; +}