diff options
Diffstat (limited to 'board/sc520_cdp')
| -rw-r--r-- | board/sc520_cdp/config.mk | 2 | ||||
| -rw-r--r-- | board/sc520_cdp/flash.c | 917 | ||||
| -rw-r--r-- | board/sc520_cdp/flash_old.c | 458 | ||||
| -rw-r--r-- | board/sc520_cdp/sc520_cdp.c | 453 | ||||
| -rw-r--r-- | board/sc520_cdp/sc520_cdp_asm16.S | 22 | ||||
| -rw-r--r-- | board/sc520_cdp/u-boot.lds | 2 |
6 files changed, 1426 insertions, 428 deletions
diff --git a/board/sc520_cdp/config.mk b/board/sc520_cdp/config.mk index d4cd998..2253815 100644 --- a/board/sc520_cdp/config.mk +++ b/board/sc520_cdp/config.mk @@ -22,4 +22,4 @@ # -TEXT_BASE = 0x387e0000 +TEXT_BASE = 0x387c0000 diff --git a/board/sc520_cdp/flash.c b/board/sc520_cdp/flash.c index 973cde8..1ebb32e 100644 --- a/board/sc520_cdp/flash.c +++ b/board/sc520_cdp/flash.c @@ -1,4 +1,7 @@ /* + * (C) Copyright 2002, 2003 + * Daniel Engström, Omicron Ceti AB, daniel@omicron.se + * * (C) Copyright 2002 * Sysgo Real-Time Solutions, GmbH <www.elinos.com> * Alex Zuepke <azu@sysgo.de> @@ -23,31 +26,23 @@ */ #include <common.h> +#include <asm/io.h> +#include <pci.h> +#include <asm/ic/sc520.h> -ulong myflush(void); +#define PROBE_BUFFER_SIZE 1024 +static unsigned char buffer[PROBE_BUFFER_SIZE]; +#define SC520_MAX_FLASH_BANKS 3 +#define SC520_FLASH_BANK0_BASE 0x38000000 /* BOOTCS */ +#define SC520_FLASH_BANK1_BASE 0x30000000 /* ROMCS0 */ +#define SC520_FLASH_BANK2_BASE 0x28000000 /* ROMCS1 */ +#define SC520_FLASH_BANKSIZE 0x8000000 -#define FLASH_BANK_SIZE 0x400000 /* 4 MB */ -#define MAIN_SECT_SIZE 0x20000 /* 128 KB */ +#define AMD29LV016B_SIZE 0x200000 +#define AMD29LV016B_SECTORS 32 -flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; - - -#define CMD_READ_ARRAY 0x00F000F0 -#define CMD_UNLOCK1 0x00AA00AA -#define CMD_UNLOCK2 0x00550055 -#define CMD_ERASE_SETUP 0x00800080 -#define CMD_ERASE_CONFIRM 0x00300030 -#define CMD_PROGRAM 0x00A000A0 -#define CMD_UNLOCK_BYPASS 0x00200020 - -#define MEM_FLASH_ADDR1 (*(volatile u32 *)(CFG_FLASH_BASE + (0x00000555 << 2))) -#define MEM_FLASH_ADDR2 (*(volatile u32 *)(CFG_FLASH_BASE + (0x000002AA << 2))) - -#define BIT_ERASE_DONE 0x00800080 -#define BIT_RDY_MASK 0x00800080 -#define BIT_PROGRAM_ERROR 0x00200020 -#define BIT_TIMEOUT 0x80000000 /* our flag */ +flash_info_t flash_info[SC520_MAX_FLASH_BANKS]; #define READY 1 #define ERR 2 @@ -56,394 +51,592 @@ flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /*----------------------------------------------------------------------- */ -ulong flash_init(void) + +static u32 _probe_flash(u32 addr, u32 bw, int il) { - int i, j; - ulong size = 0; - - for (i = 0; i < CFG_MAX_FLASH_BANKS; i++) - { - ulong flashbase = 0; - flash_info[i].flash_id = - (AMD_MANUFACT & FLASH_VENDMASK) | - (AMD_ID_LV160B & FLASH_TYPEMASK); - flash_info[i].size = FLASH_BANK_SIZE; - flash_info[i].sector_count = CFG_MAX_FLASH_SECT; - memset(flash_info[i].protect, 0, CFG_MAX_FLASH_SECT); - if (i == 0) - flashbase = PHYS_FLASH_1; - else - panic("configured to many flash banks!\n"); - for (j = 0; j < flash_info[i].sector_count; j++) - { - - if (j <= 3) - { - /* 1st one is 32 KB */ - if (j == 0) - { - flash_info[i].start[j] = flashbase + 0; + u32 result=0; + + /* First do an unlock cycle for the benefit of + * devices that need it */ + + switch (bw) { + + case 1: + *(volatile u8*)(addr+0x5555) = 0xaa; + *(volatile u8*)(addr+0x2aaa) = 0x55; + *(volatile u8*)(addr+0x5555) = 0x90; + + /* Read vendor */ + result = *(volatile u8*)addr; + result <<= 16; + + /* Read device */ + result |= *(volatile u8*)(addr+2); + + /* Return device to data mode */ + *(volatile u8*)addr = 0xff; + *(volatile u8*)(addr+0x5555), 0xf0; + break; + + case 2: + *(volatile u16*)(addr+0xaaaa) = 0xaaaa; + *(volatile u16*)(addr+0x5554) = 0x5555; + + /* Issue identification command */ + if (il == 2) { + *(volatile u16*)(addr+0xaaaa) = 0x9090; + + /* Read vendor */ + result = *(volatile u8*)addr; + result <<= 16; + + /* Read device */ + result |= *(volatile u8*)(addr+2); + + /* Return device to data mode */ + *(volatile u16*)addr = 0xffff; + *(volatile u16*)(addr+0xaaaa), 0xf0f0; + + } else { + *(volatile u8*)(addr+0xaaaa) = 0x90; + /* Read vendor */ + result = *(volatile u16*)addr; + result <<= 16; + + /* Read device */ + result |= *(volatile u16*)(addr+2); + + /* Return device to data mode */ + *(volatile u8*)addr = 0xff; + *(volatile u8*)(addr+0xaaaa), 0xf0; } - - /* 2nd and 3rd are both 16 KB */ - if ((j == 1) || (j == 2)) - { - flash_info[i].start[j] = flashbase + 0x8000 + (j-1)*0x4000; + + break; + + case 4: + *(volatile u32*)(addr+0x5554) = 0xaaaaaaaa; + *(volatile u32*)(addr+0xaaa8) = 0x55555555; + + switch (il) { + case 1: + /* Issue identification command */ + *(volatile u8*)(addr+0x5554) = 0x90; + + /* Read vendor */ + result = *(volatile u16*)addr; + result <<= 16; + + /* Read device */ + result |= *(volatile u16*)(addr+4); + + /* Return device to data mode */ + *(volatile u8*)addr = 0xff; + *(volatile u8*)(addr+0x5554), 0xf0; + break; + + case 2: + /* Issue identification command */ + *(volatile u32*)(addr + 0x5554) = 0x00900090; + + /* Read vendor */ + result = *(volatile u16*)addr; + result <<= 16; + + /* Read device */ + result |= *(volatile u16*)(addr+4); + + /* Return device to data mode */ + *(volatile u32*)addr = 0x00ff00ff; + *(volatile u32*)(addr+0x5554), 0x00f000f0; + break; + + case 4: + /* Issue identification command */ + *(volatile u32*)(addr+0x5554) = 0x90909090; + + /* Read vendor */ + result = *(volatile u8*)addr; + result <<= 16; + + /* Read device */ + result |= *(volatile u8*)(addr+4); + + /* Return device to data mode */ + *(volatile u32*)addr = 0xffffffff; + *(volatile u32*)(addr+0x5554), 0xf0f0f0f0; + break; } + break; + } + + + + return result; +} + +extern int _probe_flash_end; +asm ("_probe_flash_end:\n" + ".long 0\n"); - /* 4th 64 KB */ - if (j == 3) - { - flash_info[i].start[j] = flashbase + 0x10000; +static int identify_flash(unsigned address, int width) +{ + int is; + int device; + int vendor; + int size; + unsigned res; + + u32 (*_probe_flash_ptr)(u32 a, u32 bw, int il); + + size = (unsigned)&_probe_flash_end - (unsigned)_probe_flash; + + if (size > PROBE_BUFFER_SIZE) { + printf("_probe_flash() routine too large (%d) %p - %p\n", + size, &_probe_flash_end, _probe_flash); + return 0; + } + + memcpy(buffer, _probe_flash, size); + _probe_flash_ptr = (void*)buffer; + + is = disable_interrupts(); + res = _probe_flash_ptr(address, width, 1); + if (is) { + enable_interrupts(); + } + + + vendor = res >> 16; + device = res & 0xffff; + + + return res; +} + +ulong flash_init(void) +{ + int i, j; + ulong size = 0; + + for (i = 0; i < SC520_MAX_FLASH_BANKS; i++) { + unsigned id; + ulong flashbase = 0; + int sectsize = 0; + + memset(flash_info[i].protect, 0, CFG_MAX_FLASH_SECT); + switch (i) { + case 0: + flashbase = SC520_FLASH_BANK0_BASE; + break; + case 1: + flashbase = SC520_FLASH_BANK1_BASE; + break; + case 2: + flashbase = SC520_FLASH_BANK2_BASE; + break; + default: + panic("configured to many flash banks!\n"); + } + + id = identify_flash(flashbase, 4); + switch (id & 0x00ff00ff) { + case 0x000100c8: + /* 29LV016B/29LV017B */ + flash_info[i].flash_id = + (AMD_MANUFACT & FLASH_VENDMASK) | + (AMD_ID_LV016B & FLASH_TYPEMASK); + + flash_info[i].size = AMD29LV016B_SIZE*4; + flash_info[i].sector_count = AMD29LV016B_SECTORS; + sectsize = (AMD29LV016B_SIZE*4)/AMD29LV016B_SECTORS; + printf("Bank %d: 4 x AMD 29LV017B\n", i); + break; + + + default: + printf("Bank %d have unknown flash %08x\n", i, id); + flash_info[i].flash_id = FLASH_UNKNOWN; + continue; + } + + for (j = 0; j < flash_info[i].sector_count; j++) { + flash_info[i].start[j] = flashbase + j * sectsize; } - } - else - { - flash_info[i].start[j] = flashbase + (j - 3)*MAIN_SECT_SIZE; - } + size += flash_info[i].size; + + flash_protect(FLAG_PROTECT_CLEAR, + flash_info[i].start[0], + flash_info[i].start[0] + flash_info[i].size - 1, + &flash_info[i]); } - size += flash_info[i].size; - } - - /* - * Protect monitor and environment sectors - */ - flash_protect(FLAG_PROTECT_SET, - i386boot_start-CFG_FLASH_BASE, - i386boot_end-CFG_FLASH_BASE, - &flash_info[0]); - - flash_protect(FLAG_PROTECT_SET, - CFG_ENV_ADDR, - CFG_ENV_ADDR + CFG_ENV_SIZE - 1, - &flash_info[0]); - return size; + + /* + * Protect monitor and environment sectors + */ + flash_protect(FLAG_PROTECT_SET, + i386boot_start, + i386boot_end, + &flash_info[0]); +#ifdef CFG_ENV_ADDR + flash_protect(FLAG_PROTECT_SET, + CFG_ENV_ADDR, + CFG_ENV_ADDR + CFG_ENV_SIZE - 1, + &flash_info[0]); +#endif + return size; } /*----------------------------------------------------------------------- */ -void flash_print_info (flash_info_t *info) +void flash_print_info(flash_info_t *info) { - int i; - - switch (info->flash_id & FLASH_VENDMASK) - { - case (AMD_MANUFACT & FLASH_VENDMASK): - printf("AMD: "); - break; - default: - printf("Unknown Vendor "); - break; - } - - switch (info->flash_id & FLASH_TYPEMASK) - { - case (AMD_ID_LV160B & FLASH_TYPEMASK): - printf("2x Amd29F160BB (16Mbit)\n"); - break; - default: - printf("Unknown Chip Type\n"); - goto Done; - 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 "); + int i; + + switch (info->flash_id & FLASH_VENDMASK) { + + case (AMD_MANUFACT & FLASH_VENDMASK): + printf("AMD: "); + switch (info->flash_id & FLASH_TYPEMASK) { + case (AMD_ID_LV016B & FLASH_TYPEMASK): + printf("4x AMD29LV017B (4x16Mbit)\n"); + break; + default: + printf("Unknown Chip Type\n"); + goto done; + break; + } + + break; + default: + printf("Unknown Vendor "); + break; } - printf (" %08lX%s", info->start[i], - info->protect[i] ? " (RO)" : " "); - } - printf ("\n"); - -Done: + + + 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"); + + done: } /*----------------------------------------------------------------------- */ -int flash_erase (flash_info_t *info, int s_first, int s_last) +/* this needs to be inlined, the SWTMRMMILLI register is reset by each read */ +#define __udelay(delay) \ +{ \ + unsigned micro; \ + unsigned milli=0; \ + \ + micro = *(volatile u16*)(0xfffef000+SC520_SWTMRMILLI); \ + \ + for (;;) { \ + \ + milli += *(volatile u16*)(0xfffef000+SC520_SWTMRMILLI); \ + micro = *(volatile u16*)(0xfffef000+SC520_SWTMRMICRO); \ + \ + if ((delay) <= (micro + (milli * 1000))) { \ + break; \ + } \ + } \ +} while (0) + +static u32 _amd_erase_flash(u32 addr, u32 sector) { - ulong result; - int iflag, prot, sect; - int rc = ERR_OK; - int chip1, chip2; - - /* first look for protection bits */ - - if (info->flash_id == FLASH_UNKNOWN) - return ERR_UNKNOWN_FLASH_TYPE; - - if ((s_first < 0) || (s_first > s_last)) { - return ERR_INVAL; - } + unsigned elapsed; + + /* Issue erase */ + *(volatile u32*)(addr + 0x5554) = 0xAAAAAAAA; + *(volatile u32*)(addr + 0xaaa8) = 0x55555555; + *(volatile u32*)(addr + 0x5554) = 0x80808080; + /* And one unlock */ + *(volatile u32*)(addr + 0x5554) = 0xAAAAAAAA; + *(volatile u32*)(addr + 0xaaa8) = 0x55555555; + /* Sector erase command comes last */ + *(volatile u32*)(addr + sector) = 0x30303030; + + elapsed = *(volatile u16*)(0xfffef000+SC520_SWTMRMILLI); /* dummy read */ + elapsed = 0; + __udelay(50); + while (((*(volatile u32*)(addr + sector)) & 0x80808080) != 0x80808080) { + + elapsed += *(volatile u16*)(0xfffef000+SC520_SWTMRMILLI); + if (elapsed > ((CFG_FLASH_ERASE_TOUT/CFG_HZ) * 1000)) { + *(volatile u32*)(addr) = 0xf0f0f0f0; + return 1; + } + } + + *(volatile u32*)(addr) = 0xf0f0f0f0; + + return 0; +} - if ((info->flash_id & FLASH_VENDMASK) != - (AMD_MANUFACT & FLASH_VENDMASK)) { - return ERR_UNKNOWN_FLASH_VENDOR; - } +extern int _amd_erase_flash_end; +asm ("_amd_erase_flash_end:\n" + ".long 0\n"); - prot = 0; - for (sect=s_first; sect<=s_last; ++sect) { - if (info->protect[sect]) { - prot++; +int flash_erase(flash_info_t *info, int s_first, int s_last) +{ + u32 (*_erase_flash_ptr)(u32 a, u32 so); + int prot; + int sect; + unsigned size; + + 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 (prot) - 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. - */ - iflag = disable_interrupts(); - - /* Start erase on unprotected sectors */ - for (sect = s_first; sect<=s_last && !ctrlc(); sect++) - { - printf("Erasing sector %2d ... ", sect); - - /* arm simple, non interrupt dependent timer */ - reset_timer(); - - if (info->protect[sect] == 0) - { /* not protected */ - vu_long *addr = (vu_long *)(info->start[sect]); - - MEM_FLASH_ADDR1 = CMD_UNLOCK1; - MEM_FLASH_ADDR2 = CMD_UNLOCK2; - MEM_FLASH_ADDR1 = CMD_ERASE_SETUP; - - MEM_FLASH_ADDR1 = CMD_UNLOCK1; - MEM_FLASH_ADDR2 = CMD_UNLOCK2; - *addr = CMD_ERASE_CONFIRM; - - /* wait until flash is ready */ - chip1 = chip2 = 0; - - do - { - result = *addr; - - /* check timeout */ - if (get_timer(0) > CFG_FLASH_ERASE_TOUT) - { - MEM_FLASH_ADDR1 = CMD_READ_ARRAY; - chip1 = TMO; - break; + + if ((info->flash_id & FLASH_VENDMASK) == (AMD_MANUFACT & FLASH_VENDMASK)) { + size = (unsigned)&_amd_erase_flash_end - (unsigned)_amd_erase_flash; + + if (size > PROBE_BUFFER_SIZE) { + printf("_amd_erase_flash() routine too large (%d) %p - %p\n", + size, &_amd_erase_flash_end, _amd_erase_flash); + return 0; } - - if (!chip1 && (result & 0xFFFF) & BIT_ERASE_DONE) - chip1 = READY; - - if (!chip1 && (result & 0xFFFF) & BIT_PROGRAM_ERROR) - chip1 = ERR; - - if (!chip2 && (result >> 16) & BIT_ERASE_DONE) - chip2 = READY; - - if (!chip2 && (result >> 16) & BIT_PROGRAM_ERROR) - chip2 = ERR; - - } while (!chip1 || !chip2); - - MEM_FLASH_ADDR1 = CMD_READ_ARRAY; - - if (chip1 == ERR || chip2 == ERR) - { - rc = ERR_PROG_ERROR; - goto outahere; - } - if (chip1 == TMO) - { - rc = ERR_TIMOUT; - goto outahere; - } - - printf("ok.\n"); + + memcpy(buffer, _amd_erase_flash, size); + _erase_flash_ptr = (void*)buffer; + + } else { + printf ("Can't erase unknown flash type - aborted\n"); + return 1; } - else /* it was protected */ - { - printf("protected!\n"); + + 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 erase on unprotected sectors */ + for (sect = s_first; sect<=s_last; sect++) { + + if (info->protect[sect] == 0) { /* not protected */ + int res; + int flag; + + /* Disable interrupts which might cause a timeout here */ + flag = disable_interrupts(); + + res = _erase_flash_ptr(info->start[0], info->start[sect]-info->start[0]); + + /* re-enable interrupts if necessary */ + if (flag) { + enable_interrupts(); + } + + + if (res) { + printf("Erase timed out, sector %d\n", sect); + return res; + } + + putc('.'); + } } - } - - if (ctrlc()) - printf("User Interrupt!\n"); - -outahere: - /* allow flash to settle - wait 10 ms */ - udelay(10000); - - if (iflag) - enable_interrupts(); - - return rc; + + return 0; } /*----------------------------------------------------------------------- - * Copy memory to flash + * Write a word to Flash, returns: + * 0 - OK + * 1 - write timeout + * 2 - Flash not erased */ - -volatile static int write_word (flash_info_t *info, ulong dest, ulong data) +static int _amd_write_word(unsigned start, unsigned dest, unsigned data) { - vu_long *addr = (vu_long *)dest; - ulong result; - int rc = ERR_OK; - int iflag; - int chip1, chip2; - - /* - * Check if Flash is (sufficiently) erased - */ - result = *addr; - if ((result & 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. - */ - iflag = disable_interrupts(); - - MEM_FLASH_ADDR1 = CMD_UNLOCK1; - MEM_FLASH_ADDR2 = CMD_UNLOCK2; - MEM_FLASH_ADDR1 = CMD_UNLOCK_BYPASS; - *addr = CMD_PROGRAM; - *addr = data; - - /* arm simple, non interrupt dependent timer */ - reset_timer(); - - /* wait until flash is ready */ - chip1 = chip2 = 0; - do - { - result = *addr; - - /* check timeout */ - if (get_timer(0) > CFG_FLASH_ERASE_TOUT) - { - chip1 = ERR | TMO; - break; + volatile u32 *addr2 = (u32*)start; + volatile u32 *dest2 = (u32*)dest; + volatile u32 *data2 = (u32*)&data; + unsigned elapsed; + + /* Check if Flash is (sufficiently) erased */ + if ((*((volatile u32*)dest) & (u32)data) != (u32)data) { + return 2; } - if (!chip1 && ((result & 0x80) == (data & 0x80))) - chip1 = READY; - - if (!chip1 && ((result & 0xFFFF) & BIT_PROGRAM_ERROR)) - { - result = *addr; - - if ((result & 0x80) == (data & 0x80)) - chip1 = READY; - else - chip1 = ERR; - } - - if (!chip2 && ((result & (0x80 << 16)) == (data & (0x80 << 16)))) - chip2 = READY; - - if (!chip2 && ((result >> 16) & BIT_PROGRAM_ERROR)) - { - result = *addr; - - if ((result & (0x80 << 16)) == (data & (0x80 << 16))) - chip2 = READY; - else - chip2 = ERR; + + addr2[0x5554] = 0xAAAAAAAA; + addr2[0xaaa8] = 0x55555555; + addr2[0x5554] = 0xA0A0A0A0; + + dest2[0] = data; + + elapsed = *(volatile u16*)(0xfffef000+SC520_SWTMRMILLI); /* dummy read */ + elapsed = 0; + + /* data polling for D7 */ + while ((dest2[0] & 0x80808080) != (data2[0] & 0x80808080)) { + elapsed += *(volatile u16*)(0xfffef000+SC520_SWTMRMILLI); + if (elapsed > ((CFG_FLASH_WRITE_TOUT/CFG_HZ) * 1000)) { + addr2[0] = 0xf0f0f0f0; + return 1; + } } - } while (!chip1 || !chip2); - - *addr = CMD_READ_ARRAY; + + addr2[0] = 0xf0f0f0f0; + + return 0; +} - if (chip1 == ERR || chip2 == ERR || *addr != data) - rc = ERR_PROG_ERROR; +extern int _amd_write_word_end; +asm ("_amd_write_word_end:\n" + ".long 0\n"); - if (iflag) - enable_interrupts(); - return rc; -} /*----------------------------------------------------------------------- - * Copy memory to flash. + * Copy memory to flash, returns: + * 0 - OK + * 1 - write timeout + * 2 - Flash not erased + * 3 - Unsupported flash type */ -int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt) +int write_buff(flash_info_t *info, uchar *src, ulong addr, ulong cnt) { - ulong cp, wp, data; - int l; - int i, rc; + ulong cp, wp, data; + int i, l, rc; + int flag; + u32 (*_write_word_ptr)(unsigned start, unsigned dest, unsigned data); + unsigned size; + + if ((info->flash_id & FLASH_VENDMASK) == (AMD_MANUFACT & FLASH_VENDMASK)) { + size = (unsigned)&_amd_write_word_end - (unsigned)_amd_write_word; + + if (size > PROBE_BUFFER_SIZE) { + printf("_amd_write_word() routine too large (%d) %p - %p\n", + size, &_amd_write_word_end, _amd_write_word); + return 0; + } + + memcpy(buffer, _amd_write_word, size); + _write_word_ptr = (void*)buffer; + + } else { + printf ("Can't program unknown flash type - aborted\n"); + return 3; + } - 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 << 24); + 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 |= (*(uchar *)cp) << (8*i); + } + for (; i<4 && cnt>0; ++i) { + data |= *src++ << (8*i); + --cnt; + ++cp; + } + for (; cnt==0 && i<4; ++i, ++cp) { + data |= (*(uchar *)cp) << (8*i); + } + + /* Disable interrupts which might cause a timeout here */ + flag = disable_interrupts(); + + rc = _write_word_ptr(info->start[0], wp, data); + + /* re-enable interrupts if necessary */ + if (flag) { + enable_interrupts(); + } + if (rc != 0) { + return rc; + } + wp += 4; } - for (; i<4 && cnt>0; ++i) { - data = (data >> 8) | (*src++ << 24); - --cnt; - ++cp; + + /* + * handle word aligned part + */ + while (cnt >= 4) { + data = 0; + + for (i=0; i<4; ++i) { + data |= *src++ << (8*i); + } + + /* Disable interrupts which might cause a timeout here */ + flag = disable_interrupts(); + + rc = _write_word_ptr(info->start[0], wp, data); + + /* re-enable interrupts if necessary */ + if (flag) { + enable_interrupts(); + } + if (rc != 0) { + return rc; + } + wp += 4; + cnt -= 4; } - for (; cnt==0 && i<4; ++i, ++cp) { - data = (data >> 8) | (*(uchar *)cp << 24); + + if (cnt == 0) { + return 0; } - - if ((rc = write_word(info, wp, data)) != 0) { - return (rc); + + /* + * handle unaligned tail bytes + */ + data = 0; + for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) { + data |= *src++ << (8*i); + --cnt; } - wp += 4; - } - - /* - * handle word aligned part - */ - while (cnt >= 4) { - data = *((vu_long*)src); - if ((rc = write_word(info, wp, data)) != 0) { - return (rc); + + for (; i<4; ++i, ++cp) { + data |= (*(uchar *)cp) << (8*i); } - src += 4; - wp += 4; - cnt -= 4; - } - - if (cnt == 0) { - return ERR_OK; - } - - /* - * handle unaligned tail bytes - */ - data = 0; - for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) { - data = (data >> 8) | (*src++ << 24); - --cnt; - } - for (; i<4; ++i, ++cp) { - data = (data >> 8) | (*(uchar *)cp << 24); - } - - return write_word(info, wp, data); + + /* Disable interrupts which might cause a timeout here */ + flag = disable_interrupts(); + + rc = _write_word_ptr(info->start[0], wp, data); + + /* re-enable interrupts if necessary */ + if (flag) { + enable_interrupts(); + } + + return rc; + } + + diff --git a/board/sc520_cdp/flash_old.c b/board/sc520_cdp/flash_old.c new file mode 100644 index 0000000..d4204a8 --- /dev/null +++ b/board/sc520_cdp/flash_old.c @@ -0,0 +1,458 @@ +/* + * (C) Copyright 2002 + * Daniel Engström, Omicron Ceti AB, daniel@omicron.se + * + * (C) Copyright 2002 + * Sysgo Real-Time Solutions, GmbH <www.elinos.com> + * Alex Zuepke <azu@sysgo.de> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <asm/io.h> + +ulong myflush(void); + + +#define SC520_MAX_FLASH_BANKS 3 +#define SC520_FLASH_BANK0_BASE 0x38000000 /* BOOTCS */ +#define SC520_FLASH_BANK1_BASE 0x30000000 /* ROMCS0 */ +#define SC520_FLASH_BANK2_BASE 0x28000000 /* ROMCS1 */ +#define SC520_FLASH_BANKSIZE 0x8000000 + +#define AMD29LV016_SIZE 0x200000 +#define AMD29LV016_SECTORS 32 + +flash_info_t flash_info[SC520_MAX_FLASH_BANKS]; + +#define CMD_READ_ARRAY 0x00F000F0 +#define CMD_UNLOCK1 0x00AA00AA +#define CMD_UNLOCK2 0x00550055 +#define CMD_ERASE_SETUP 0x00800080 +#define CMD_ERASE_CONFIRM 0x00300030 +#define CMD_PROGRAM 0x00A000A0 +#define CMD_UNLOCK_BYPASS 0x00200020 + + +#define BIT_ERASE_DONE 0x00800080 +#define BIT_RDY_MASK 0x00800080 +#define BIT_PROGRAM_ERROR 0x00200020 +#define BIT_TIMEOUT 0x80000000 /* our flag */ + +#define READY 1 +#define ERR 2 +#define TMO 4 + +/*----------------------------------------------------------------------- + */ + +ulong flash_init(void) +{ + int i, j; + ulong size = 0; + + for (i = 0; i < SC520_MAX_FLASH_BANKS; i++) { + ulong flashbase = 0; + int sectsize = 0; + if (i==0 || i==2) { + /* FixMe: this assumes that bank 0 and 2 + * are mapped to the two 8Mb banks */ + flash_info[i].flash_id = + (AMD_MANUFACT & FLASH_VENDMASK) | + (AMD_ID_LV016B & FLASH_TYPEMASK); + + flash_info[i].size = AMD29LV016_SIZE*4; + flash_info[i].sector_count = AMD29LV016_SECTORS; + sectsize = (AMD29LV016_SIZE*4)/AMD29LV016_SECTORS; + } else { + /* FixMe: this assumes that bank1 is unmapped + * (or mapped to the same flash bank as BOOTCS) */ + flash_info[i].flash_id = 0; + flash_info[i].size = 0; + flash_info[i].sector_count = 0; + sectsize=0; + } + memset(flash_info[i].protect, 0, CFG_MAX_FLASH_SECT); + switch (i) { + case 0: + flashbase = SC520_FLASH_BANK0_BASE; + break; + case 1: + flashbase = SC520_FLASH_BANK1_BASE; + break; + case 2: + flashbase = SC520_FLASH_BANK0_BASE; + break; + default: + panic("configured to many flash banks!\n"); + } + + for (j = 0; j < flash_info[i].sector_count; j++) { + flash_info[i].start[j] = sectsize; + flash_info[i].start[j] = flashbase + j * sectsize; + } + size += flash_info[i].size; + } + + /* + * Protect monitor and environment sectors + */ + flash_protect(FLAG_PROTECT_SET, + i386boot_start-SC520_FLASH_BANK0_BASE, + i386boot_end-SC520_FLASH_BANK0_BASE, + &flash_info[0]); + +#ifdef CFG_ENV_ADDR + flash_protect(FLAG_PROTECT_SET, + CFG_ENV_ADDR, + CFG_ENV_ADDR + CFG_ENV_SIZE - 1, + &flash_info[0]); +#endif + return size; +} + +/*----------------------------------------------------------------------- + */ +void flash_print_info(flash_info_t *info) +{ + int i; + + switch (info->flash_id & FLASH_VENDMASK) { + case (AMD_MANUFACT & FLASH_VENDMASK): + printf("AMD: "); + break; + default: + printf("Unknown Vendor "); + break; + } + + switch (info->flash_id & FLASH_TYPEMASK) { + case (AMD_ID_LV016B & FLASH_TYPEMASK): + printf("4x Amd29LV016B (16Mbit)\n"); + break; + default: + printf("Unknown Chip Type\n"); + goto done; + 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"); + + done: +} + +/*----------------------------------------------------------------------- + */ + +int flash_erase(flash_info_t *info, int s_first, int s_last) +{ + ulong result; + int iflag, prot, sect; + int rc = ERR_OK; + int chip1, chip2; + + /* first look for protection bits */ + + if (info->flash_id == FLASH_UNKNOWN) { + return ERR_UNKNOWN_FLASH_TYPE; + } + + if ((s_first < 0) || (s_first > s_last)) { + return ERR_INVAL; + } + + if ((info->flash_id & FLASH_VENDMASK) != + (AMD_MANUFACT & FLASH_VENDMASK)) { + return ERR_UNKNOWN_FLASH_VENDOR; + } + + prot = 0; + for (sect=s_first; sect<=s_last; ++sect) { + if (info->protect[sect]) { + prot++; + } + } + if (prot) { + 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. + */ + iflag = disable_interrupts(); + + /* Start erase on unprotected sectors */ + for (sect = s_first; sect<=s_last && !ctrlc(); sect++) { + printf("Erasing sector %2d ... ", sect); + + /* arm simple, non interrupt dependent timer */ + reset_timer(); + + if (info->protect[sect] == 0) { + /* not protected */ + ulong addr = info->start[sect]; + + writel(CMD_UNLOCK1, addr + 1); + writel(CMD_UNLOCK2, addr + 2); + writel(CMD_ERASE_SETUP, addr + 1); + + writel(CMD_UNLOCK1, addr + 1); + writel(CMD_UNLOCK2, addr + 2); + writel(CMD_ERASE_CONFIRM, addr); + + + /* wait until flash is ready */ + chip1 = chip2 = 0; + + do { + result = readl(addr); + + /* check timeout */ + if (get_timer(0) > CFG_FLASH_ERASE_TOUT) { + writel(CMD_READ_ARRAY, addr + 1); + chip1 = TMO; + break; + } + + if (!chip1 && (result & 0xFFFF) & BIT_ERASE_DONE) { + chip1 = READY; + } + + if (!chip1 && (result & 0xFFFF) & BIT_PROGRAM_ERROR) { + chip1 = ERR; + } + + if (!chip2 && (result >> 16) & BIT_ERASE_DONE) { + chip2 = READY; + } + + if (!chip2 && (result >> 16) & BIT_PROGRAM_ERROR) { + chip2 = ERR; + } + + } while (!chip1 || !chip2); + + writel(CMD_READ_ARRAY, addr + 1); + + if (chip1 == ERR || chip2 == ERR) { + rc = ERR_PROG_ERROR; + goto outahere; + } + + if (chip1 == TMO) { + rc = ERR_TIMOUT; + goto outahere; + } + + printf("ok.\n"); + } else { /* it was protected */ + + printf("protected!\n"); + } + } + + if (ctrlc()) { + printf("User Interrupt!\n"); + } + +outahere: + /* allow flash to settle - wait 10 ms */ + udelay(10000); + + if (iflag) { + enable_interrupts(); + } + + return rc; +} + +/*----------------------------------------------------------------------- + * Copy memory to flash + */ + +volatile static int write_word(flash_info_t *info, ulong dest, ulong data) +{ + ulong addr = dest; + ulong result; + int rc = ERR_OK; + int iflag; + int chip1, chip2; + + /* + * Check if Flash is (sufficiently) erased + */ + result = readl(addr); + if ((result & 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. + */ + iflag = disable_interrupts(); + + writel(CMD_UNLOCK1, addr + 1); + writel(CMD_UNLOCK2, addr + 2); + writel(CMD_UNLOCK_BYPASS, addr + 1); + writel(addr, CMD_PROGRAM); + writel(addr, data); + + /* arm simple, non interrupt dependent timer */ + reset_timer(); + + /* wait until flash is ready */ + chip1 = chip2 = 0; + do { + result = readl(addr); + + /* check timeout */ + if (get_timer(0) > CFG_FLASH_ERASE_TOUT) { + chip1 = ERR | TMO; + break; + } + + if (!chip1 && ((result & 0x80) == (data & 0x80))) { + chip1 = READY; + } + + if (!chip1 && ((result & 0xFFFF) & BIT_PROGRAM_ERROR)) { + result = readl(addr); + + if ((result & 0x80) == (data & 0x80)) { + chip1 = READY; + } else { + chip1 = ERR; + } + } + + if (!chip2 && ((result & (0x80 << 16)) == (data & (0x80 << 16)))) { + chip2 = READY; + } + + if (!chip2 && ((result >> 16) & BIT_PROGRAM_ERROR)) { + result = readl(addr); + + if ((result & (0x80 << 16)) == (data & (0x80 << 16))) { + chip2 = READY; + } else { + chip2 = ERR; + } + } + + } while (!chip1 || !chip2); + + writel(CMD_READ_ARRAY, addr); + + if (chip1 == ERR || chip2 == ERR || readl(addr) != data) { + rc = ERR_PROG_ERROR; + } + + if (iflag) { + enable_interrupts(); + } + + return rc; +} + +/*----------------------------------------------------------------------- + * Copy memory to flash. + */ + +int write_buff(flash_info_t *info, uchar *src, ulong addr, ulong cnt) +{ + ulong cp, wp, data; + int l; + int i, 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 << 24); + } + for (; i<4 && cnt>0; ++i) { + data = (data >> 8) | (*src++ << 24); + --cnt; + ++cp; + } + for (; cnt==0 && i<4; ++i, ++cp) { + data = (data >> 8) | (*(uchar *)cp << 24); + } + + if ((rc = write_word(info, wp, data)) != 0) { + return rc; + } + wp += 4; + } + + /* + * handle word aligned part + */ + while (cnt >= 4) { + data = *((vu_long*)src); + if ((rc = write_word(info, wp, data)) != 0) { + return rc; + } + src += 4; + wp += 4; + cnt -= 4; + } + + if (cnt == 0) { + return ERR_OK; + } + + /* + * handle unaligned tail bytes + */ + data = 0; + for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) { + data = (data >> 8) | (*src++ << 24); + --cnt; + } + for (; i<4; ++i, ++cp) { + data = (data >> 8) | (*(uchar *)cp << 24); + } + + return write_word(info, wp, data); +} diff --git a/board/sc520_cdp/sc520_cdp.c b/board/sc520_cdp/sc520_cdp.c index 2809ff7..50a49e6 100644 --- a/board/sc520_cdp/sc520_cdp.c +++ b/board/sc520_cdp/sc520_cdp.c @@ -1,4 +1,5 @@ /* + * * (C) Copyright 2002 * Daniel Engström, Omicron Ceti AB <daniel@omicron.se>. * @@ -24,109 +25,162 @@ #include <common.h> #include <pci.h> #include <asm/io.h> +#include <asm/pci.h> #include <asm/ic/sc520.h> #include <asm/ic/ali512x.h> +#include <ssi.h> + +#undef SC520_CDP_DEBUG + +#ifdef SC520_CDP_DEBUG +#define PRINTF(fmt,args...) printf (fmt ,##args) +#else +#define PRINTF(fmt,args...) +#endif /* ------------------------------------------------------------------------- */ + +/* + * Theory: + * We first set up all IRQs to be non-pci, edge triggered, + * when we later enumerate the pci bus and pci_sc520_fixup_irq() gets + * called we reallocate irqs to the pci bus with sc520_pci_set_irq() + * as needed. Whe choose the irqs to gram from a configurable list + * inside pci_sc520_fixup_irq() (If this list contains stupid irq's + * such as 0 thngas will not work) + */ + static void irq_init(void) { - /* disable global interrupt mode */ write_mmcr_byte(SC520_PICICR, 0x40); - /* set irq0-7 to edge */ + /* set all irqs to edge */ write_mmcr_byte(SC520_MPICMODE, 0x00); - - /* set irq9-12 to level, all the other (8, 13-15) are edge */ - write_mmcr_byte(SC520_SL1PICMODE, 0x1e); - - /* set irq16-24 (unused slave pic2) to level */ - write_mmcr_byte(SC520_SL2PICMODE, 0xff); + write_mmcr_byte(SC520_SL1PICMODE, 0x00); + write_mmcr_byte(SC520_SL2PICMODE, 0x00); /* active low polarity on PIC interrupt pins, - active high polarity on all other irq pins */ - write_mmcr_word(SC520_INTPINPOL, 0); + * active high polarity on all other irq pins */ + write_mmcr_word(SC520_INTPINPOL, 0x0000); /* set irq number mapping */ - write_mmcr_byte(SC520_GPTMR0MAP,0); /* disable GP timer 0 INT */ - write_mmcr_byte(SC520_GPTMR1MAP,0); /* disable GP timer 1 INT */ - write_mmcr_byte(SC520_GPTMR2MAP,0); /* disable GP timer 2 INT */ - write_mmcr_byte(SC520_PIT0MAP,0x1); /* Set PIT timer 0 INT to IRQ0 */ - write_mmcr_byte(SC520_PIT1MAP,0); /* diable PIT timer 1 INT */ - write_mmcr_byte(SC520_PIT2MAP,0); /* diable PIT timer 2 INT */ - write_mmcr_byte(SC520_PCIINTAMAP,0x4); /* Set PCI INT A to IRQ9 */ - write_mmcr_byte(SC520_PCIINTBMAP,0x5); /* Set PCI INT B to IRQ10 */ - write_mmcr_byte(SC520_PCIINTCMAP,0x6); /* Set PCI INT C to IRQ11 */ - write_mmcr_byte(SC520_PCIINTDMAP,0x7); /* Set PCI INT D to IRQ12 */ - write_mmcr_byte(SC520_DMABCINTMAP,0); /* disable DMA INT */ - write_mmcr_byte(SC520_SSIMAP,0); /* disable Synchronius serial INT */ - write_mmcr_byte(SC520_WDTMAP,0); /* disable Watchdor INT */ - write_mmcr_byte(SC520_RTCMAP,0x3); /* Set RTC int to 8 */ - write_mmcr_byte(SC520_WPVMAP,0); /* disable write protect INT */ - write_mmcr_byte(SC520_ICEMAP,0x2); /* Set ICE Debug Serielport INT to IRQ1 */ - write_mmcr_byte(SC520_FERRMAP,0x8); /* Set FP error INT to IRQ13 */ - write_mmcr_byte(SC520_GP0IMAP,6); /* Set GPIRQ0 (ISA IRQ2) to IRQ9 */ - write_mmcr_byte(SC520_GP1IMAP,2); /* Set GPIRQ1 (SIO IRQ1) to IRQ1 */ - write_mmcr_byte(SC520_GP2IMAP,7); /* Set GPIRQ2 (ISA IRQ12) to IRQ12 */ + write_mmcr_byte(SC520_GPTMR0MAP, SC520_IRQ_DISABLED); /* disable GP timer 0 INT */ + write_mmcr_byte(SC520_GPTMR1MAP, SC520_IRQ_DISABLED); /* disable GP timer 1 INT */ + write_mmcr_byte(SC520_GPTMR2MAP, SC520_IRQ_DISABLED); /* disable GP timer 2 INT */ + write_mmcr_byte(SC520_PIT0MAP, SC520_IRQ0); /* Set PIT timer 0 INT to IRQ0 */ + write_mmcr_byte(SC520_PIT1MAP, SC520_IRQ_DISABLED); /* disable PIT timer 1 INT */ + write_mmcr_byte(SC520_PIT2MAP, SC520_IRQ_DISABLED); /* disable PIT timer 2 INT */ + write_mmcr_byte(SC520_PCIINTAMAP, SC520_IRQ_DISABLED); /* disable PCI INT A */ + write_mmcr_byte(SC520_PCIINTBMAP, SC520_IRQ_DISABLED); /* disable PCI INT B */ + write_mmcr_byte(SC520_PCIINTCMAP, SC520_IRQ_DISABLED); /* disable PCI INT C */ + write_mmcr_byte(SC520_PCIINTDMAP, SC520_IRQ_DISABLED); /* disable PCI INT D */ + write_mmcr_byte(SC520_DMABCINTMAP, SC520_IRQ_DISABLED); /* disable DMA INT */ + write_mmcr_byte(SC520_SSIMAP, SC520_IRQ_DISABLED); /* disable Synchronius serial INT */ + write_mmcr_byte(SC520_WDTMAP, SC520_IRQ_DISABLED); /* disable Watchdog INT */ + write_mmcr_byte(SC520_RTCMAP, SC520_IRQ8); /* Set RTC int to 8 */ + write_mmcr_byte(SC520_WPVMAP, SC520_IRQ_DISABLED); /* disable write protect INT */ + write_mmcr_byte(SC520_ICEMAP, SC520_IRQ1); /* Set ICE Debug Serielport INT to IRQ1 */ + write_mmcr_byte(SC520_FERRMAP,SC520_IRQ13); /* Set FP error INT to IRQ13 */ if (CFG_USE_SIO_UART) { - write_mmcr_byte(SC520_UART1MAP,0); /* disable internal UART1 INT */ - write_mmcr_byte(SC520_UART2MAP,0); /* disable internal UART2 INT */ - write_mmcr_byte(SC520_GP3IMAP,11); /* Set GPIRQ3 (ISA IRQ3) to IRQ3 */ - write_mmcr_byte(SC520_GP4IMAP,12); /* Set GPIRQ4 (ISA IRQ4) to IRQ4 */ + write_mmcr_byte(SC520_UART1MAP, SC520_IRQ_DISABLED); /* disable internal UART1 INT */ + write_mmcr_byte(SC520_UART2MAP, SC520_IRQ_DISABLED); /* disable internal UART2 INT */ + write_mmcr_byte(SC520_GP3IMAP, SC520_IRQ3); /* Set GPIRQ3 (ISA IRQ3) to IRQ3 */ + write_mmcr_byte(SC520_GP4IMAP, SC520_IRQ4); /* Set GPIRQ4 (ISA IRQ4) to IRQ4 */ } else { - write_mmcr_byte(SC520_UART1MAP,12); /* Set internal UART2 INT to IRQ4 */ - write_mmcr_byte(SC520_UART2MAP,11); /* Set internal UART2 INT to IRQ3 */ - write_mmcr_byte(SC520_GP3IMAP,0); /* disable GPIRQ3 (ISA IRQ3) */ - write_mmcr_byte(SC520_GP4IMAP,0); /* disable GPIRQ4 (ISA IRQ4) */ + write_mmcr_byte(SC520_UART1MAP, SC520_IRQ4); /* Set internal UART2 INT to IRQ4 */ + write_mmcr_byte(SC520_UART2MAP, SC520_IRQ3); /* Set internal UART2 INT to IRQ3 */ + write_mmcr_byte(SC520_GP3IMAP, SC520_IRQ_DISABLED); /* disable GPIRQ3 (ISA IRQ3) */ + write_mmcr_byte(SC520_GP4IMAP, SC520_IRQ_DISABLED); /* disable GPIRQ4 (ISA IRQ4) */ } - write_mmcr_byte(SC520_GP5IMAP,13); /* Set GPIRQ5 (ISA IRQ5) to IRQ5 */ - write_mmcr_byte(SC520_GP6IMAP,21); /* Set GPIRQ6 (ISA IRQ6) to IRQ6 */ - write_mmcr_byte(SC520_GP7IMAP,22); /* Set GPIRQ7 (ISA IRQ7) to IRQ7 */ - write_mmcr_byte(SC520_GP8IMAP,3); /* Set GPIRQ8 (SIO IRQ8) to IRQ8 */ - write_mmcr_byte(SC520_GP9IMAP,4); /* Set GPIRQ9 (ISA IRQ9) to IRQ9 */ - write_mmcr_byte(SC520_GP10IMAP,9); /* Set GPIRQ10 (ISA IRQ10) to IRQ10 */ - write_mmcr_word(SC520_PCIHOSTMAP,0x11f); /* Map PCI hostbridge INT to NMI */ - write_mmcr_word(SC520_ECCMAP,0x100); /* Map SDRAM ECC failure INT to NMI */ + write_mmcr_byte(SC520_GP1IMAP, SC520_IRQ1); /* Set GPIRQ1 (SIO IRQ1) to IRQ1 */ + write_mmcr_byte(SC520_GP5IMAP, SC520_IRQ5); /* Set GPIRQ5 (ISA IRQ5) to IRQ5 */ + write_mmcr_byte(SC520_GP6IMAP, SC520_IRQ6); /* Set GPIRQ6 (ISA IRQ6) to IRQ6 */ + write_mmcr_byte(SC520_GP7IMAP, SC520_IRQ7); /* Set GPIRQ7 (ISA IRQ7) to IRQ7 */ + write_mmcr_byte(SC520_GP8IMAP, SC520_IRQ8); /* Set GPIRQ8 (SIO IRQ8) to IRQ8 */ + write_mmcr_byte(SC520_GP9IMAP, SC520_IRQ9); /* Set GPIRQ9 (ISA IRQ2) to IRQ9 */ + write_mmcr_byte(SC520_GP0IMAP, SC520_IRQ11); /* Set GPIRQ0 (ISA IRQ11) to IRQ10 */ + write_mmcr_byte(SC520_GP2IMAP, SC520_IRQ12); /* Set GPIRQ2 (ISA IRQ12) to IRQ12 */ + write_mmcr_byte(SC520_GP10IMAP,SC520_IRQ14); /* Set GPIRQ10 (ISA IRQ14) to IRQ14 */ + + write_mmcr_word(SC520_PCIHOSTMAP, 0x11f); /* Map PCI hostbridge INT to NMI */ + write_mmcr_word(SC520_ECCMAP, 0x100); /* Map SDRAM ECC failure INT to NMI */ } + /* PCI stuff */ static void pci_sc520_cdp_fixup_irq(struct pci_controller *hose, pci_dev_t dev) { - char pin; - int irq; + /* a configurable lists of irqs to steal + * when we need one (a board with more pci interrupt pins + * would use a larger table */ + static int irq_list[] = { + CFG_FIRST_PCI_IRQ, + CFG_SECOND_PCI_IRQ, + CFG_THIRD_PCI_IRQ, + CFG_FORTH_PCI_IRQ + }; + static int next_irq_index=0; + char tmp_pin; + int pin; - pci_hose_read_config_byte(hose, dev, PCI_INTERRUPT_PIN, &pin); - irq = pin-1; + pci_hose_read_config_byte(hose, dev, PCI_INTERRUPT_PIN, &tmp_pin); + pin = tmp_pin; + pin-=1; /* pci config space use 1-based numbering */ + if (-1 == pin) { + return; /* device use no irq */ + } + + + + /* map device number + pin to a pin on the sc520 */ switch (PCI_DEV(dev)) { case 20: + pin+=SC520_PCI_INTA; break; + case 19: - irq+=1; + pin+=SC520_PCI_INTB; break; + case 18: - irq+=2; + pin+=SC520_PCI_INTC; break; + case 17: - irq+=3; + pin+=SC520_PCI_INTD; break; + default: return; } - irq&=3; /* wrap around */ - irq+=9; /* lowest IRQ is 9 */ + pin&=3; /* wrap around */ - pci_hose_write_config_byte(hose, dev, PCI_INTERRUPT_LINE, irq); -#if 0 - printf("fixup_irq: device %d pin %c irq %d\n", - PCI_DEV(dev), 'A' + pin -1, irq); -#endif + if (sc520_pci_ints[pin] == -1) { + /* re-route one interrupt for us */ + if (next_irq_index > 3) { + return; + } + if (pci_sc520_set_irq(pin, irq_list[next_irq_index])) { + return; + } + next_irq_index++; + } + + + if (-1 != sc520_pci_ints[pin]) { + pci_hose_write_config_byte(hose, dev, PCI_INTERRUPT_LINE, + sc520_pci_ints[pin]); + } + PRINTF("fixup_irq: device %d pin %c irq %d\n", + PCI_DEV(dev), 'A' + pin, sc520_pci_ints[pin]); } static struct pci_controller sc520_cdp_hose = { @@ -162,8 +216,8 @@ void setup_ali_sio(int uart_primary) /* SSI chip select pins */ ali512x_cio_function(14, 0, 0, 0); /* SSI_CS */ - ali512x_cio_function(15, 0, 0, 0); /* SSI_MV */ - ali512x_cio_function(16, 0, 1, 0); /* SSI_SPI# (inverted) */ + ali512x_cio_function(15, 0, 0, 0); /* SSI_MV */ + ali512x_cio_function(16, 0, 0, 0); /* SSI_SPI# */ /* Board REV pins */ ali512x_cio_function(20, 0, 0, 1); @@ -202,6 +256,7 @@ static void bus_init(void) * we need to map 1G-128k - 1G (0x38000000 - 0x3fffffff) to CS1 */ + /* SRAM = GPCS3 128k @ d0000-effff*/ write_mmcr_long(SC520_PAR2, 0x4e00400d); @@ -219,13 +274,15 @@ static void bus_init(void) /* 680 LEDS */ write_mmcr_long(SC520_PAR15, 0x30000640); + write_mmcr_byte(SC520_ADDDECCTL, 0); + asm ("wbinvd\n"); /* Flush cache, req. after setting the unchached attribute ona PAR */ if (CFG_USE_SIO_UART) { write_mmcr_byte(SC520_ADDDECCTL, read_mmcr_byte(SC520_ADDDECCTL) | UART2_DIS|UART1_DIS); setup_ali_sio(1); } else { - write_mmcr_byte(SC520_ADDDECCTL, read_mmcr_byte(SC520_ADDDECCTL) & ~(UART2_DIS|UART1_DIS)); + write_mmcr_byte(SC520_ADDDECCTL, read_mmcr_byte(SC520_ADDDECCTL) & ~(UART2_DIS|UART1_DIS)); setup_ali_sio(0); silence_uart(0x3e8); silence_uart(0x2e8); @@ -233,7 +290,192 @@ static void bus_init(void) } +/* GPCS usage + * GPCS0 PIO27 (NMI) + * GPCS1 ROMCS1 + * GPCS2 ROMCS2 + * GPCS3 SRAMCS PAR2 + * GPCS4 unused PAR3 + * GPCS5 unused PAR4 + * GPCS6 IDE + * GPCS7 IDE + */ + + +/* par usage: + * PAR0 legacy_video + * PAR1 PCI ROM mapping + * PAR2 SRAM + * PAR3 IDE + * PAR4 IDE + * PAR5 legacy_video + * PAR6 legacy_video + * PAR7 legacy_video + * PAR8 legacy_video + * PAR9 legacy_video + * PAR10 legacy_video + * PAR11 ISAROM + * PAR12 BOOTCS + * PAR13 ROMCS1 + * PAR14 ROMCS2 + * PAR15 Port 0x680 LED display + */ + +/* + * This function should map a chunk of size bytes + * of the system address space to the ISA bus + * + * The function will return the memory address + * as seen by the host (which may very will be the + * same as the bus address) + */ +u32 isa_map_rom(u32 bus_addr, int size) +{ + u32 par; + + PRINTF("isa_map_rom asked to map %d bytes at %x\n", + size, bus_addr); + + par = size; + if (par < 0x80000) { + par = 0x80000; + } + par >>= 12; + par--; + par&=0x7f; + par <<= 18; + par |= (bus_addr>>12); + par |= 0x50000000; + + PRINTF ("setting PAR11 to %x\n", par); + + /* Map rom 0x10000 with PAR1 */ + write_mmcr_long(SC520_PAR11, par); + + return bus_addr; +} + +/* + * this function removed any mapping created + * with pci_get_rom_window() + */ +void isa_unmap_rom(u32 addr) +{ + PRINTF("isa_unmap_rom asked to unmap %x", addr); + if ((addr>>12) == (read_mmcr_long(SC520_PAR11)&0x3ffff)) { + write_mmcr_long(SC520_PAR11, 0); + PRINTF(" done\n"); + return; + } + PRINTF(" not ours\n"); +} + +#ifdef CONFIG_PCI +#define PCI_ROM_TEMP_SPACE 0x10000 +/* + * This function should map a chunk of size bytes + * of the system address space to the PCI bus, + * suitable to map PCI ROMS (bus address < 16M) + * the function will return the host memory address + * which should be converted into a bus address + * before used to configure the PCI rom address + * decoder + */ +u32 pci_get_rom_window(struct pci_controller *hose, int size) +{ + u32 par; + + par = size; + if (par < 0x80000) { + par = 0x80000; + } + par >>= 16; + par--; + par&=0x7ff; + par <<= 14; + par |= (PCI_ROM_TEMP_SPACE>>16); + par |= 0x72000000; + + PRINTF ("setting PAR1 to %x\n", par); + + /* Map rom 0x10000 with PAR1 */ + write_mmcr_long(SC520_PAR1, par); + + return PCI_ROM_TEMP_SPACE; +} + +/* + * this function removed any mapping created + * with pci_get_rom_window() + */ +void pci_remove_rom_window(struct pci_controller *hose, u32 addr) +{ + PRINTF("pci_remove_rom_window: %x", addr); + if (addr == PCI_ROM_TEMP_SPACE) { + write_mmcr_long(SC520_PAR1, 0); + PRINTF(" done\n"); + return; + } + PRINTF(" not ours\n"); + +} + +/* + * This function is called in order to provide acces to the + * legacy video I/O ports on the PCI bus. + * After this function accesses to I/O ports 0x3b0-0x3bb and + * 0x3c0-0x3df shuld result in transactions on the PCI bus. + * + */ +int pci_enable_legacy_video_ports(struct pci_controller *hose) +{ + /* Map video memory to 0xa0000*/ + write_mmcr_long(SC520_PAR0, 0x7200400a); + + /* forward all I/O accesses to PCI */ + write_mmcr_byte(SC520_ADDDECCTL, + read_mmcr_byte(SC520_ADDDECCTL) | IO_HOLE_DEST_PCI); + + + /* so we map away all io ports to pci (only way to access pci io + * below 0x400. But then we have to map back the portions that we dont + * use so that the generate cycles on the GPIO bus where the sio and + * ISA slots are connected, this requre the use of several PAR registers + */ + + /* bring 0x100 - 0x1ef back to ISA using PAR5 */ + write_mmcr_long(SC520_PAR5, 0x30ef0100); + + /* IDE use 1f0-1f7 */ + + /* bring 0x1f8 - 0x2f7 back to ISA using PAR6 */ + write_mmcr_long(SC520_PAR6, 0x30ff01f8); + + /* com2 use 2f8-2ff */ + + /* bring 0x300 - 0x3af back to ISA using PAR7 */ + write_mmcr_long(SC520_PAR7, 0x30af0300); + + /* vga use 3b0-3bb */ + + /* bring 0x3bc - 0x3bf back to ISA using PAR8 */ + write_mmcr_long(SC520_PAR8, 0x300303bc); + + /* vga use 3c0-3df */ + + /* bring 0x3e0 - 0x3f5 back to ISA using PAR9 */ + write_mmcr_long(SC520_PAR9, 0x301503e0); + + /* ide use 3f6 */ + + /* bring 0x3f7 back to ISA using PAR10 */ + write_mmcr_long(SC520_PAR10, 0x300003f7); + + /* com1 use 3f8-3ff */ + return 0; +} +#endif /* * Miscelaneous platform dependent initialisations @@ -252,7 +494,6 @@ int board_init(void) /* enter debug mode after next reset (only if jumper is also set) */ write_mmcr_byte(SC520_RESCFG, 0x08); - /* configure the software timer to 33.333MHz */ write_mmcr_byte(SC520_SWTMRCFG, 0); gd->bus_clk = 33333000; @@ -288,3 +529,87 @@ int last_stage_init(void) return 0; } + + + +void ssi_chip_select(int dev) +{ + + /* Spunk board: SPI EEPROM is active-low, MW EEPROM and AUX are active high */ + switch (dev) { + case 1: /* SPI EEPROM */ + ali512x_cio_out(16, 0); + break; + + case 2: /* MW EEPROM */ + ali512x_cio_out(15, 1); + break; + + case 3: /* AUX */ + ali512x_cio_out(14, 1); + break; + + case 0: + ali512x_cio_out(16, 1); + ali512x_cio_out(15, 0); + ali512x_cio_out(14, 0); + break; + + default: + printf("Illegal SSI device requested: %d\n", dev); + } +} + + +void spi_init_f(void) +{ +#ifdef CONFIG_SC520_CDP_USE_SPI + spi_eeprom_probe(1); +#endif +#ifdef CONFIG_SC520_CDP_USE_MW + mw_eeprom_probe(2); +#endif +} + +ssize_t spi_read(uchar *addr, int alen, uchar *buffer, int len) +{ + int offset; + int i; + ssize_t res; + + offset = 0; + for (i=0;i<alen;i++) { + offset <<= 8; + offset |= addr[i]; + } + +#ifdef CONFIG_SC520_CDP_USE_SPI + res = spi_eeprom_read(1, offset, buffer, len); +#endif +#ifdef CONFIG_SC520_CDP_USE_MW + res = mw_eeprom_read(2, offset, buffer, len); +#endif + return res; +} + +ssize_t spi_write(uchar *addr, int alen, uchar *buffer, int len) +{ + int offset; + int i; + ssize_t res; + + offset = 0; + for (i=0;i<alen;i++) { + offset <<= 8; + offset |= addr[i]; + } + +#ifdef CONFIG_SC520_CDP_USE_SPI + res = spi_eeprom_write(1, offset, buffer, len); +#endif +#ifdef CONFIG_SC520_CDP_USE_MW + res = mw_eeprom_write(2, offset, buffer, len); +#endif + return res; +} + diff --git a/board/sc520_cdp/sc520_cdp_asm16.S b/board/sc520_cdp/sc520_cdp_asm16.S index a3cadcf..0e0b0c0 100644 --- a/board/sc520_cdp/sc520_cdp_asm16.S +++ b/board/sc520_cdp/sc520_cdp_asm16.S @@ -60,3 +60,25 @@ board_init16: /* the return address is tored in bp */ jmp *%bp + +.section .bios, "ax" +.code16 +.globl realmode_reset +realmode_reset: + /* Alias MMCR to 0xdf000 */ + movw $0xfffc, %dx + movl $0x800df0cb, %eax + outl %eax, %dx + + /* Set ds to point to MMCR alias */ + movw $0xdf00, %ax + movw %ax, %ds + + /* issue software reset thorugh MMCR */ + movl $0xd72, %edi + movb $0x01, %al + movb %al, (%di) + +1: hlt + jmp 1 + diff --git a/board/sc520_cdp/u-boot.lds b/board/sc520_cdp/u-boot.lds index ac8d3db..fbab9b8 100644 --- a/board/sc520_cdp/u-boot.lds +++ b/board/sc520_cdp/u-boot.lds @@ -27,7 +27,7 @@ ENTRY(_start) SECTIONS { - . = 0x387e0000; /* Where bootcode in the flash is mapped */ + . = 0x387c0000; /* Where bootcode in the flash is mapped */ .text : { *(.text); } . = ALIGN(4); |