FreeCalypso > hg > ffs-editor
view src/cs/drivers/drv_app/ffs/board/drv.c @ 27:cb3f6fe694e1 default tip
README: document SE K2x0 addition
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Thu, 21 Dec 2023 21:44:43 +0000 |
parents | 680f6fdb5e62 |
children |
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/****************************************************************************** * Flash File System (ffs) * Idea, design and coding by Mads Meisner-Jensen, mmj@ti.com * * ffs low level flash driver * * $Id: drv.c 1.30.1.6.1.51.1.1.1.13.1.11 Tue, 06 Jan 2004 14:36:52 +0100 tsj $ * ******************************************************************************/ #ifndef TARGET #include "ffs.cfg" #endif #include "fc-target.h" #include "ffs/ffs.h" #include "ffs/board/drv.h" #include "ffs/board/ffstrace.h" #if (TARGET == 0) #ifdef WIN32 #include "windows.h" #else //WIN32 #include "sys/mman.h" #include "unistd.h" #endif //WIN32 #include "stdio.h" #include "sys/types.h" #include "sys/stat.h" #include "fcntl.h" #else #include "nucleus.h" #endif // Note that all code notes and comments pertaining to single-bank flash // drivers are located in the AMD SB driver (amdsbdrv.c). Consider this as // the reference. /****************************************************************************** * Globals ******************************************************************************/ #if (TARGET == 1) // NOTE: This is the size in bytes of the single-bank driver code that is // copied to RAM. The only way to determine the amount of memory needed is // to look into the linker output file (.map) or the assembler output of // both amdsbdrv.obj and intelsbdrv.obj files. #define FFSDRV_CODE_SIZE (0x200) uint8 ffsdrv_code[FFSDRV_CODE_SIZE]; #endif #define INTEL_UNLOCK_SLOW 1 struct dev_s dev; struct ffsdrv_s ffsdrv; uint32 int_disable(void); void int_enable(uint32 tmp); /****************************************************************************** * Macros ******************************************************************************/ #define addr2offset(address) ( (int) (address) - (int) dev.base ) /****************************************************************************** * Generic Driver Functions ******************************************************************************/ void ffsdrv_generic_write(void *dst, const void *src, uint16 size) { uint8 *mydst = dst; const uint8 *mysrc = src; if (size > 0) { if ((unsigned int) mydst & 1) { ffsdrv_write_byte(mydst++, *mysrc++); size--; } while (size >= 2) { ffsdrv.write_halfword((uint16 *) mydst, mysrc[0] | (mysrc[1] << 8)); size -= 2; mysrc += 2; mydst += 2; } if (size == 1) ffsdrv_write_byte(mydst++, *mysrc++); } } /****************************************************************************** * AMD Single Bank Driver Functions ******************************************************************************/ #if (TARGET == 1) // Forward declaration of functions in file amdsbdrv.c void ffsdrv_ram_amd_sb_write_halfword(volatile uint16 *addr, uint16 value); void ffsdrv_ram_amd_sb_erase(uint8 block); #else // (TARGET == 0) // On PC these functions are empty void ffsdrv_ram_amd_sb_write_halfword(volatile uint16 *addr, uint16 value) {} void ffsdrv_ram_amd_sb_erase(uint8 block) {} #endif // (TARGET == 1) /****************************************************************************** * AMD Pseudo Single Bank Driver Functions ******************************************************************************/ // This is a pseudo single-bank flash driver. It simulates a single-bank // flash device on a dual-bank device. #if (TARGET == 1) void ffsdrv_amd_pseudo_sb_write_halfword(volatile uint16 *addr, uint16 value) { volatile char *flash = dev.base; uint32 cpsr, i, x; ttw(ttr(TTrDrvWrite, "wh(%x,%x)" NL, addr, value)); if (~*addr & value) { ttw(ttr(TTrFatal, "wh(%x,%x->%x) fatal" NL, addr, *addr, value)); return; } cpsr = int_disable(); tlw(led_on(LED_WRITE)); flash[0xAAAA] = 0xAA; // unlock cycle 1 flash[0x5555] = 0x55; // unlock cycle 2 flash[0xAAAA] = 0xA0; *addr = value; while ((*dev.addr ^ dev.data) & 0x80) ; tlw(led_off(LED_WRITE)); int_enable(cpsr); } // This VERY simple way of erase suspending only works because we run under // a pre-emptive operating system, so whenever an interrupt occurs, another // task takes the CPU, and at the end of the interrupt, FFS gets the CPU // again. void ffsdrv_amd_pseudo_sb_erase(uint8 block) { volatile char *flash = dev.base; volatile char *addr; uint32 cpsr; uint16 flashpoll; addr = block2addr(block); ttw(ttr(TTrDrvErase, "e(%d)" NL, block)); cpsr = int_disable(); tlw(led_on(LED_ERASE)); flash[0xAAAA] = 0xAA; // unlock cycle 1 flash[0x5555] = 0x55; // unlock cycle 2 flash[0xAAAA] = 0x80; flash[0xAAAA] = 0xAA; // unlock cycle 1 flash[0x5555] = 0x55; // unlock cycle 2 *addr = 0x30; // AMD erase sector command // Wait for erase to finish. while ((*addr & 0x80) == 0) { tlw(led_toggle(LED_ERASE)); // Poll interrupts, taking interrupt mask into account. if (INT_REQUESTED) { // 1. suspend erase // 2. enable interrupts // .. now the interrupt code executes // 3. disable interrupts // 4. resume erase tlw(led_on(LED_ERASE_SUSPEND)); *addr = 0xB0; // wait for erase suspend to finish while ((*addr & 0x80) == 0) ; tlw(led_off(LED_ERASE_SUSPEND)); int_enable(cpsr); // Other interrupts and tasks run now... cpsr = int_disable(); tlw(led_on(LED_ERASE_SUSPEND)); // Before resuming erase we must? check if the erase is really // suspended or if it did finish flashpoll = *addr; *addr = 0x30; tlw(led_off(LED_ERASE_SUSPEND)); } } tlw(led_on(LED_ERASE)); tlw(led_off(LED_ERASE)); int_enable(cpsr); } #else // (TARGET == 0) void ffsdrv_amd_pseudo_sb_write_halfword(volatile uint16 *addr, uint16 value) {} void ffsdrv_amd_pseudo_sb_erase(uint8 block) {} #endif // (TARGET == 1) /****************************************************************************** * AMD Dual/Multi Bank Driver Functions ******************************************************************************/ // All erase and write operations are performed atomically (interrupts // disabled). Otherwise we cannot trust the value of dev.state and we cannot // determine exactly how many of the command words have already been // written. // in ffs_end() when we resume an erasure that was previously suspended, how // does that affect multiple tasks doing that simultaneously? void ffsdrv_amd_write_end(void); void ffsdrv_amd_erase_end(void); void ffsdrv_amd_write_halfword(volatile uint16 *addr, uint16 value) { volatile uint16 *flash = (volatile uint16 *)dev.base; uint32 cpsr; tlw(led_on(LED_WRITE)); ttw(ttr(TTrDrvWrite, "wh(%x,%x)" NL, addr, value)); dev.addr = addr; dev.data = value; if (~*addr & value) { ttw(ttr(TTrFatal, "wh(%x,%x->%x) fatal" NL, addr, *addr, value)); return; } cpsr = int_disable(); tlw(led_toggle(LED_WRITE_SUSPEND)); dev.state = DEV_WRITE; flash[0x555] = 0xAA; // unlock cycle 1 flash[0x2AA] = 0x55; // unlock cycle 2 flash[0x555] = 0xA0; *addr = value; int_enable(cpsr); tlw(led_toggle(LED_WRITE_SUSPEND)); ffsdrv_amd_write_end(); } void ffsdrv_amd_write(void *dst, const void *src, uint16 size) { uint8 *mydst = dst; const uint8 *mysrc = src; if (size > 0) { if ((unsigned int) mydst & 1) { ffsdrv_write_byte(mydst++, *mysrc++); size--; } while (size >= 2) { ffsdrv_amd_write_halfword((uint16 *) mydst, mysrc[0] | (mysrc[1] << 8)); size -= 2; mysrc += 2; mydst += 2; } if (size == 1) ffsdrv_write_byte(mydst++, *mysrc++); } } void ffsdrv_amd_write_end(void) { while ((*dev.addr ^ dev.data) & 0x80) tlw(led_toggle(LED_WRITE_SUSPEND)); dev.state = DEV_READ; tlw(led_off(LED_WRITE)); } void ffsdrv_amd_erase(uint8 block) { volatile uint16 *flash = (volatile uint16 *)dev.base; uint32 cpsr; tlw(led_on(LED_ERASE)); ttw(ttr(TTrDrvErase, "e(%d)" NL, block)); dev.addr = (uint16 *) block2addr(block); cpsr = int_disable(); dev.state = DEV_ERASE; flash[0x555] = 0xAA; // unlock cycle 1 flash[0x2AA] = 0x55; // unlock cycle 2 flash[0x555] = 0x80; flash[0x555] = 0xAA; // unlock cycle 1 flash[0x2AA] = 0x55; // unlock cycle 2 *dev.addr = 0x30; // AMD erase sector command int_enable(cpsr); ffsdrv_amd_erase_end(); } void ffsdrv_amd_erase_end(void) { while ((*dev.addr & 0x80) == 0) ; dev.state = DEV_READ; tlw(led_off(LED_ERASE)); } void ffsdrv_amd_erase_suspend(void) { uint32 cpsr; tlw(led_on(LED_ERASE_SUSPEND)); ttw(str(TTrDrvErase, "es" NL)); // if erase has finished then all is ok if (*dev.addr & 0x80) { ffsdrv_amd_erase_end(); tlw(led_off(LED_ERASE_SUSPEND)); return; } // NOTEME: As there is no way to be absolutely certain that erase // doesn't finish between last poll and the following erase suspend // command, we assume that the erase suspend is safe even though the // erase IS actually already finished. cpsr = int_disable(); dev.state = DEV_ERASE_SUSPEND; *dev.addr = 0xB0; // Wait for erase suspend to finish while ((*dev.addr & 0x80) == 0) ; int_enable(cpsr); } void ffsdrv_amd_erase_resume(void) { uint32 cpsr; ttw(str(TTrDrvErase, "er" NL)); // NOTEME: See note in erase_suspend()... We assume that the erase // resume is safe even though the erase IS actually already finished. cpsr = int_disable(); dev.state = DEV_ERASE; *dev.addr = 0x30; int_enable(cpsr); tlw(led_off(LED_ERASE_SUSPEND)); } /****************************************************************************** * SST Dual/Multi Bank Driver Functions ******************************************************************************/ // SST flashes use almost same command set as AMD flashes. Only the command // addresses (4 more bits) and erase command data (0x50 instead of 0x30) are // different. SST flashes have no erase suspend/resume commands because they // are so fast at erasing! void ffsdrv_sst_write_end(void); void ffsdrv_sst_erase_end(void); void ffsdrv_sst_write(void *dst, const void *src, uint16 size) { uint8 *mydst = dst; const uint8 *mysrc = src; if (size > 0) { if ((unsigned int) mydst & 1) { ffsdrv_write_byte(mydst++, *mysrc++); size--; } while (size >= 2) { ffsdrv_amd_write_halfword((uint16 *) mydst, mysrc[0] | (mysrc[1] << 8)); size -= 2; mysrc += 2; mydst += 2; } if (size == 1) ffsdrv_write_byte(mydst++, *mysrc++); } } // Note that SST flashes have smaller sectors than other flash families. // Fortunately they support erasure of several of these sectors in a logical // unit called a "block". void ffsdrv_sst_erase(uint8 block) { volatile char *flash = dev.base; uint32 cpsr; tlw(led_on(LED_ERASE)); ttw(ttr(TTrDrvErase, "e(%d)" NL, block)); dev.addr = (uint16 *) block2addr(block); cpsr = int_disable(); dev.state = DEV_ERASE; flash[0xAAAA] = 0xAA; // unlock cycle 1 flash[0x5555] = 0x55; // unlock cycle 2 flash[0xAAAA] = 0x80; flash[0xAAAA] = 0xAA; // unlock cycle 1 flash[0x5555] = 0x55; // unlock cycle 2 *dev.addr = 0x50; // SST erase block command int_enable(cpsr); ffsdrv_sst_erase_end(); } void ffsdrv_sst_erase_end(void) { // Wait for erase end while ((*dev.addr & 0x80) == 0) ; dev.state = DEV_READ; tlw(led_off(LED_ERASE)); } // Erase suspend/resume commands do not exist for SST flashes, so we just // poll for the end of the erase operation... void ffsdrv_sst_erase_suspend(void) { ttw(str(TTrDrvErase, "es" NL)); ffsdrv_sst_erase_end(); } /****************************************************************************** * Intel Single Bank Driver Functions ******************************************************************************/ #if (TARGET == 1) // Forward declaration of functions in file intelsbdrv.c int ffsdrv_ram_intel_sb_init(void); void ffsdrv_ram_intel_sb_write_halfword(volatile uint16 *addr, uint16 value); void ffsdrv_ram_intel_sb_erase(uint8 block); void ffsdrv_ram_intel_erase(uint8 block); #else // (TARGET == 0) // On PC these functions are empty void ffsdrv_ram_intel_sb_write_halfword(volatile uint16 *addr, uint16 value) {} void ffsdrv_ram_intel_sb_erase(uint8 block) {} void ffsdrv_ram_intel_erase(uint8 block) {} #endif // (TARGET == 1) /****************************************************************************** * Intel Dual/Multi Bank Driver Functions ******************************************************************************/ void ffsdrv_intel_write_end(void); void ffsdrv_intel_erase_end(void); // ffsdrv_intel_write_halfword and ffsdrv_intel_write_end is not used // because of the bug in the intel flash device. Instead is the functions // ffsdrv_ram_intel_sb_write_halfword and ffsdrv_ram_intel_erase used. void ffsdrv_intel_write_halfword(volatile uint16 *addr, uint16 value) { uint32 cpsr; tlw(led_on(LED_WRITE)); ttw(ttr(TTrDrvWrite, "wh(%x,%x)" NL, addr, value)); dev.addr = addr; if (~*addr & value) { ttw(ttr(TTrFatal, "wh(%x,%x->%x) fatal" NL, addr, *addr, value)); return; } cpsr = int_disable(); dev.state = DEV_WRITE; #if (INTEL_UNLOCK_SLOW == 1) *addr = 0x60; // Intel Config setup *addr = 0xD0; // Intel Unlock block *addr = 0x50; // Intel Clear Status Register #endif *addr = 0x40; // Intel program byte/word *addr = value; int_enable(cpsr); ffsdrv_intel_write_end(); } void ffsdrv_intel_write(void *dst, const void *src, uint16 size) { uint8 *mydst = dst; const uint8 *mysrc = src; if (size > 0) { if ((unsigned int) mydst & 1) { ffsdrv_write_byte(mydst++, *mysrc++); size--; } while (size >= 2) { ffsdrv_intel_write_halfword((uint16 *) mydst, mysrc[0] | (mysrc[1] << 8)); size -= 2; mysrc += 2; mydst += 2; } if (size == 1) ffsdrv_write_byte(mydst++, *mysrc++); } } void ffsdrv_intel_write_end(void) { uint32 cpsr; // We can be interrupted and reentered thus the state can have been changed. while ((*dev.addr & 0x80) == 0 && dev.state == DEV_WRITE) ; // The flash state and dev.state must be in sync thus the stat changes // must be protect from being interrupted cpsr = int_disable(); *dev.addr = 0xFF; // Intel read array dev.state = DEV_READ; int_enable(cpsr); tlw(led_off(LED_WRITE)); } void ffsdrv_intel_erase(uint8 block) { uint32 cpsr; ttw(ttr(TTrDrvErase, "e(%d)" NL, block)); tlw(led_on(LED_ERASE)); dev.addr = (uint16 *) block2addr(block); cpsr = int_disable(); dev.state = DEV_ERASE; #if (INTEL_UNLOCK_SLOW == 1) *dev.addr = 0x60; // Intel Config setup *dev.addr = 0xD0; // Intel Unlock block #endif *dev.addr = 0x50; // Intel clear status register (not really necessary) *dev.addr = 0x20; // Intel erase setup *dev.addr = 0xD0; // Intel erase confirm int_enable(cpsr); ffsdrv_intel_erase_end(); } void ffsdrv_intel_erase_end(void) { while ((*dev.addr & 0x80) == 0 && dev.state == DEV_ERASE) ; *dev.addr = 0xFF; // Intel read array dev.state = DEV_READ; tlw(led_off(LED_ERASE)); } void ffsdrv_intel_erase_suspend(void) { uint32 cpsr; uint16 poll; ttw(str(TTrDrvErase, "es" NL)); tlw(led_on(LED_ERASE_SUSPEND)); cpsr = int_disable(); dev.state = DEV_ERASE_SUSPEND; *dev.addr = 0xB0; // Intel Erase Suspend *dev.addr = 0x70; // Intel Read Status Register while (((poll = *dev.addr) & 0x80) == 0) ; if ((poll & 0x40) == 0) { // Block erase has completed tlw(led_off(LED_ERASE_SUSPEND)); dev.state = DEV_READ; tlw(led_off(LED_ERASE)); } *dev.addr = 0xFF; // Intel read array int_enable(cpsr); } void ffsdrv_intel_erase_resume(void) { uint32 cpsr; ttw(str(TTrDrvErase, "er" NL)); cpsr = int_disable(); dev.state = DEV_ERASE; *dev.addr = 0xD0; // Intel erase resume // The following "extra" Read Status command is required because Intel // has changed the specification of the W30 flash! (See "1.8 Volt Intel® // Wireless Flash Memory with 3 Volt I/O 28F6408W30, 28F640W30, // 28F320W30 Specification Update") *dev.addr = 0x70; // Intel Read Status Register int_enable(cpsr); tlw(led_off(LED_ERASE_SUSPEND)); } /****************************************************************************** * RAM Family Functions ******************************************************************************/ void ffsdrv_ram_write_halfword(volatile uint16 *dst, uint16 value) { *dst = value; } void ffsdrv_ram_write(void *dst, const void *src, uint16 size) { uint8 *mydst = dst; const uint8 *mysrc = src; if (size == 0) return; else if (size == 1) ffsdrv_write_byte(mydst, *mysrc); else { if ((int) mydst & 1) { ffsdrv_write_byte(mydst++, *mysrc++); size--; } while (size >= 2) { ffsdrv_ram_write_halfword((uint16 *) mydst, mysrc[0]|(mysrc[1] << 8)); size -= 2; mysrc += 2; mydst += 2; } if (size == 1) ffsdrv_write_byte(mydst++, *mysrc++); } } void ffsdrv_ram_erase(uint8 block) { int i; char *addr; addr = block2addr(block); for (i = 0; i < (1 << dev.binfo[block].size_ld); i++) { *addr++ = 0xFF; } } /****************************************************************************** * Void Functions ******************************************************************************/ int ffsdrv_null_init(void) { ttw(ttr(TTrDrvOther, "ffsdrv_null_init()" NL)); return 0; } void ffsdrv_null_erase(uint8 block) { ttw(ttr(TTrDrvErase, "ffsdrv_null_erase(%d)" NL, block)); } void ffsdrv_null_write_halfword(volatile uint16 *addr, uint16 value) { ttw(ttr(TTrDrvWrite, "ffsdrv_null_write_halfword(0x%x, 0x%x)" NL, addr, value)); } void ffsdrv_null_write(void *dst, const void *src, uint16 size) { ttw(ttr(TTrDrvWrite, "ffsdrv_null_write(0x%x, 0x%x, %d)" NL, dst, src, size)); } void ffsdrv_null_erase_suspend(void) { ttw(str(TTrDrvErase, "ffsdrv_null_erase_suspend()" NL)); } void ffsdrv_null_erase_resume(void) { ttw(str(TTrDrvErase, "ffsdrv_null_erase_resume()" NL)); } void ffsdrv_null_write_end(void) { ttw(str(TTrDrvWrite, "ffsdrv_null_write_end()" NL)); } void ffsdrv_null_erase_end(void) { ttw(str(TTrDrvErase, "ffsdrv_null_erase_end()" NL)); } /****************************************************************************** * Test Driver Functions ******************************************************************************/ #if (TARGET == 0) static char *image_addr = 0; static int image_size = 0; #ifdef WIN32 HANDLE image_fd, map_fd; #else //WIN32 static int image_fd = 0; #endif //WIN32 extern int arg_removeimage; extern char *arg_imagename; extern void test_fatal_printf(char *format, ...); void ffsdrv_write_check(char *addr, int size) { offset_t offset, last; offset = addr2offset(addr); last = dev.binfo[dev.numblocks-1].offset + (1 << dev.binfo[dev.numblocks-1].size_ld); if (offset < 0 || (offset + size) > last) { fprintf(stderr, "ffsdrv_write_check() failed (addr = 0x%x, size = %d)\n", (int) addr, size); fprintf(stdout, "ffsdrv_write_check() failed (addr = 0x%x, size = %d)\n", (int) addr, size); exit (1); } } void ffsdrv_write_error(uint16 old, uint16 new) { test_fatal_printf("FATAL: Attempt to rewrite 0 to 1 bit " "(old:0x%x/%c new:0x%x/%c)\n", old, (old < ' ' ? '?' : old), new, (new < ' ' ? '?' : new)); } void ffsdrv_test_write_halfword(volatile uint16 *addr, uint16 value) { tw(tr(TR_FUNC, TrDrvWrite, "test_write_halfword(0x%05x, 0x%x)\n", addr2offset(addr), value)); ffsdrv_write_check((uint8 *) addr, 2); if (~*addr & value) ffsdrv_write_error(*addr, value); *addr = value; } void ffsdrv_test_write(void *dst, const void *src, uint16 size) { uint8 *mydst = dst; const uint8 *mysrc = src; tw(tr(TR_FUNC, TrDrvWrite, "test_write(0x%05x, 0x%x, %d)\n", addr2offset(mydst), mysrc, size)); if (size > 0) { if ((int) mydst & 1) { ffsdrv_write_byte(mydst++, *mysrc++); size--; } while (size >= 2) { ffsdrv_test_write_halfword((uint16 *) mydst, mysrc[0]|(mysrc[1] << 8)); size -= 2; mysrc += 2; mydst += 2; } if (size == 1) ffsdrv_write_byte(mydst++, *mysrc++); } } void ffsdrv_test_erase(uint8 block) { int i; uint8 *addr; addr = block2addr(block); tw(tr(TR_FUNC, TrDrvErase, "ffsdrv_test_erase(%d)\n", block)); for (i = 0; i < 1 << dev.binfo[block].size_ld; i++) { *addr++ = 0xFF; } } char *ffsdrv_test_create(void) { // If flash image file already exists, open the file, and mmap it. // Otherwise, create file, fill file with 1's, then mmap it. int i; struct stat statbuf; #ifdef WIN32 OFSTRUCT lpReOpenBuff; DWORD last_error; SECURITY_ATTRIBUTES lpAttributes; lpAttributes.nLength = sizeof (lpAttributes); lpAttributes.lpSecurityDescriptor = NULL; lpAttributes.bInheritHandle = TRUE; #endif image_size = (int) dev.binfo[dev.numblocks - 1].offset + (1 << dev.binfo[dev.numblocks - 1].size_ld); tw(tr(TR_BEGIN, TrDrvInit, "ffsdrv_test_create() {\n")); tw(tr(TR_FUNC, TrDrvInit, "%s image: '%s', size = %d\n", arg_removeimage ? "new" : "current", arg_imagename, image_size)); // create file if it does not exist #ifdef WIN32 if( arg_removeimage || OpenFile( arg_imagename, &lpReOpenBuff, OF_EXIST) == HFILE_ERROR ) #else if (arg_removeimage || lstat(arg_imagename, &statbuf) == -1) #endif { char data[64]; #ifdef WIN32 DWORD bwritten; #endif // only the first run should remove the flash image file arg_removeimage = 0; tw(tr(TR_FUNC, TrDrvInit, "creating new flash image file '%s'\n", arg_imagename)); #ifdef WIN32 image_fd = CreateFile(arg_imagename, GENERIC_WRITE | GENERIC_READ, 0, NULL, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL ); #else image_fd = open(arg_imagename , O_RDWR|O_CREAT, (S_IRWXU & ~S_IXUSR) | ( S_IRWXG & ~S_IXGRP) | (S_IRWXO & ~S_IXOTH)); #endif if (image_fd == -1) { perror("Failed to create flash image"); exit(1); } // write 1's to the file. for (i = 0; i < 64; i++) data[i] = 0xff; #ifdef WIN32 for (i = 0; i < image_size/64; i++) WriteFile(image_fd, data, 64, &bwritten, NULL); CloseHandle(image_fd); #else for (i = 0; i < image_size/64; i++) write(image_fd, data, 64); close(image_fd); #endif image_fd = 0; tw(tr(TR_FUNC, TrDrvInit, "flash image file created\n")); } // only open image file if this is the first initialization. if (image_fd > 0) { tw(tr(TR_FUNC, TrDrvInit, "re-opening '%s' file of size %d\n", arg_imagename, image_size)); } else { tw(tr(TR_FUNC, TrDrvInit, "opening '%s' file of size %d\n", arg_imagename, image_size)); #ifdef WIN32 image_fd = OpenFile( arg_imagename, &lpReOpenBuff, OF_READWRITE); map_fd = CreateFileMapping (image_fd, &lpAttributes, PAGE_READWRITE, 0, 0, arg_imagename); #else image_fd = open(arg_imagename, O_RDWR, S_IRWXU|S_IRWXG|S_IRWXO); #endif if (image_fd == -1) { perror("Failed to open flash image"); exit(1); } // memory map the file and update block addresses of binfo array #ifdef WIN32 image_addr = MapViewOfFile( map_fd, FILE_MAP_ALL_ACCESS, 0, 0, 0); #else image_addr = mmap(0, image_size, PROT_READ|PROT_WRITE, MAP_FILE|MAP_SHARED, image_fd, 0); #endif } tw(tr(TR_END, TrDrvInit, "}\n")); return image_addr; } #endif // (TARGET == 0) /****************************************************************************** * Device Detection and Copying of Driver to RAM ******************************************************************************/ #if (TARGET == 1) // Note that this function reads device code of any of the three known flash // families; Intel, AMD and SST. This works because Intel and AMD use // the same command data for entering READ_IDENTIFIER mode (0x90). // The function should be copied and executed from RAM! void ffsdrv_device_id_read(uint16 *manufact, uint16 *device) { #if defined(CONFIG_TARGET_FCFAM) || defined(CONFIG_TARGET_PIRELLI) || \ defined(CONFIG_TARGET_SE_K2X0) || defined(__GNUC__) /* * This new FreeCalypso version of the device ID read function * should work for all current targets, but we are being conservative * and only enabling it for those targets for which it is required, * i.e., where TI's original version does not work. * * Selenite change: for the gcc version we need to use this new * autodetect code for all targets, TI's original version won't work * because we run with the Calypso boot ROM at 0. */ int addr, half, base, i; /* * We operate at a non-zero erase block boundary so that this ID read * operation will still work in our newer FreeCalypso environments * where we have the Calypso boot ROM mapped at 0. */ base = 0x40000; /* * muckery similar to TI's original to avoid literal pool loads, * but we produce and use 0xAAA and 0x554 offsets instead of TI's * original 0xAAAA and 0x5555. */ for (i = 0, addr = 0; i < 3; i++) addr = addr << 4 | 0xA; half = (addr >> 1) & ~1; FLASH_WRITE_HALFWORD (base + addr, 0xAA); FLASH_WRITE_HALFWORD (base + half, 0x55); FLASH_WRITE_HALFWORD (base + addr, 0x90); // Intel/AMD read id command *manufact = FLASH_READ_HALFWORD (base + 0); // flash a0 = 0 *device = FLASH_READ_HALFWORD (base + 2); // flash a0 = 1 // Read extended id device[1] = FLASH_READ_HALFWORD (base + (0xE << 1)); device[2] = FLASH_READ_HALFWORD (base + (0xF << 1)); FLASH_WRITE_HALFWORD (base, 0xFF); // Intel read-array command // AMD devices do not need the two unlock cycles but SST devices do, // even though the SST datasheets states otherwise ;-) FLASH_WRITE_HALFWORD (base + addr, 0xAA); FLASH_WRITE_HALFWORD (base + half, 0x55); FLASH_WRITE_HALFWORD (base + addr, 0xF0); // AMD read-array/reset command #else /* TI's original version */ int addr, i; // This silly looking code has one purpose; to set addr = 0xAAAA. It is // necessary in order to force the compiler NOT to produce code that // uses LDR opcode(s) with PC-relative addressing. The assember code // produced from this C code is completely relocatable! for (i = 0, addr = 0; i < 2; i++) addr |= addr << 8 | 0xAA; FLASH_WRITE_HALFWORD (addr, 0xAA); FLASH_WRITE_HALFWORD (addr >> 1, 0x55); FLASH_WRITE_HALFWORD (addr, 0x90); // Intel/AMD read id command *manufact = FLASH_READ_HALFWORD (0); // flash a0 = 0 *device = FLASH_READ_HALFWORD (2); // flash a0 = 1 // Read extended id device[1] = FLASH_READ_HALFWORD (0xE << 1); device[2] = FLASH_READ_HALFWORD (0xF << 1); FLASH_WRITE_HALFWORD (0, 0xFF); // Intel read-array command // AMD devices do not need the two unlock cycles but SST devices do, // even though the SST datasheets states otherwise ;-) FLASH_WRITE_HALFWORD (addr, 0xAA); FLASH_WRITE_HALFWORD (addr >> 1, 0x55); FLASH_WRITE_HALFWORD (addr, 0xF0); // AMD read-array/reset command #endif } // Copy ffsdrv_device_id_read() function code to RAM. The only known way to // determine the size of the code is to look either in the linker-generated // map file or in the assember output file. void ffsdrv_device_id_read_copy_to_ram(uint16 *dst, int size) { uint16 *src = (uint16 *) &ffsdrv_device_id_read; // The ARM7TDMI compiler sets bit 0 for thumb mode function pointers, so // we need to clear this in order to copy *all* bytes. Otherwise we // exclude first byte and the resulting copy becomes garbage src = (uint16 *) (~1 & (int) src); size /= 2; while (size--) *dst++ = *src++; } // Copy ffsdrv_xxx_sb_erase() and ffsdrv_xxx_sb_write_halfword() functions // to RAM. The only known way to determine the size of the code is to look // either in the linker-generated map file or in the assember output file. int ffsdrv_driver_copy_to_ram(int type) { int size; uint16 *src, *dst; extern uint16 ffsdrv_ram_amd_begin[]; extern uint16 ffsdrv_ram_intel_begin[]; uint32 offset_of_init; uint32 offset_of_erase; uint32 offset_of_write_halfword; ttw(ttr(TTrDrvOther, "ffsdrv_driver_copy_to_ram() {" NL)); switch (type) { case FFS_DRIVER_AMD: case FFS_DRIVER_AMD_SB: src = ffsdrv_ram_amd_begin; offset_of_erase = (uint32) ffsdrv_ram_amd_sb_erase - (uint32) src; offset_of_write_halfword = (uint32) ffsdrv_ram_amd_sb_write_halfword - (uint32) src; break; case FFS_DRIVER_INTEL_SB: src = ffsdrv_ram_intel_begin; offset_of_init = (uint32) ffsdrv_ram_intel_sb_init - (uint32) src; offset_of_erase = (uint32) ffsdrv_ram_intel_sb_erase - (uint32) src; offset_of_write_halfword = (uint32) ffsdrv_ram_intel_sb_write_halfword - (uint32) src; break; case FFS_DRIVER_INTEL: src = ffsdrv_ram_intel_begin; offset_of_init = (uint32) ffsdrv_ram_intel_sb_init - (uint32) src; offset_of_erase = (uint32) ffsdrv_ram_intel_erase - (uint32) src; offset_of_write_halfword = (uint32) ffsdrv_ram_intel_sb_write_halfword - (uint32) src; break; default: ttw(ttr(TTrDrvOther, "}" NL)); return 0; } // Make sure we are handling a half-word aligned address (Thumb mode // function pointers have lsb set!) src = (uint16 *) (~1 & (int) src); // If we detect that the linker allocated the driver to RUN in RAM, the // user has obviously NOT removed those linker lines and we bail out! if (offset_of_erase > FFSDRV_CODE_SIZE) return EFFS_DRIVER; dst = (uint16 *) &ffsdrv_code; // Code size in halfwords size = FFSDRV_CODE_SIZE / 2; // Rebind the two changed driver functions if (type == FFS_DRIVER_AMD_SB || type == FFS_DRIVER_INTEL_SB) { ffsdrv.erase = (void (*)(uint8)) (offset_of_erase + (uint32) dst); ffsdrv.write_halfword = (void (*)(volatile uint16 *, uint16)) (offset_of_write_halfword + (uint32) dst); } if (type == FFS_DRIVER_INTEL_SB) { ffsdrv.init = (int (*)(void)) (offset_of_init + (uint32) dst); } ttw(ttr(TTrDrvOther, "ffsdrv_code, init, write, erase = 0x%07x, 0x%07x, 0x%07x, 0x%07x" NL, dst, (uint32) ffsdrv.init, (uint32) ffsdrv.write_halfword, (uint32) ffsdrv.erase)); ttw(ttr(TTrDrvOther, "amd_begin, init, write, erase = 0x%07x, 0x%07x, 0x%07x, 0x%07x" NL, ffsdrv_ram_amd_begin, ffsdrv_null_init, ffsdrv_ram_amd_sb_write_halfword, ffsdrv_ram_amd_sb_erase)); ttw(ttr(TTrDrvOther, "intel_begin, init, write, erase = 0x%07x, 0x%07x, 0x%07x, 0x%07x" NL, ffsdrv_ram_intel_begin, ffsdrv_ram_intel_sb_init, ffsdrv_ram_intel_sb_write_halfword, ffsdrv_ram_intel_sb_erase)); // Copy the code to RAM while (size--) *dst++ = *src++; ttw(ttr(TTrDrvOther, "}" NL)); return 0; } #if defined(CONFIG_TARGET_PIRELLI) || defined(CONFIG_TARGET_FCFAM) || \ defined(CONFIG_TARGET_SE_K2X0) #if defined(CONFIG_TARGET_FCFAM) || defined(CONFIG_TARGET_SE_K2X0) #define FLASH2_BASE_ADDR 0x01800000 #elif defined(CONFIG_TARGET_PIRELLI) #define FLASH2_BASE_ADDR 0x02000000 #endif int ffsdrv_is_new_spansion_flash(void) { uint16 cfi_hi, cfi_lo, cfi_ver; /* CFI query */ FLASH_WRITE_HALFWORD(FLASH2_BASE_ADDR + 0xAAA, 0x98); cfi_hi = FLASH_READ_HALFWORD(FLASH2_BASE_ADDR + 0x86); cfi_lo = FLASH_READ_HALFWORD(FLASH2_BASE_ADDR + 0x88); cfi_ver = (cfi_hi << 8) | (cfi_lo & 0xFF); /* return to read array mode */ FLASH_WRITE_HALFWORD(FLASH2_BASE_ADDR + 0xAAA, 0xF0); if (cfi_ver >= 0x3134) return 1; else return 0; } #endif #else // (TARGET == 0) void ffsdrv_device_id_read(uint16 *manufact, uint16 *device) {} int ffsdrv_driver_copy_to_ram(int type) { return 0; } #endif // (TARGET == 1) /****************************************************************************** * Initialization ******************************************************************************/ const struct ffsdrv_s ffsdrv_amd = { ffsdrv_null_init, ffsdrv_amd_erase, ffsdrv_amd_write_halfword, ffsdrv_amd_write, ffsdrv_amd_write_end, ffsdrv_amd_erase_suspend, ffsdrv_amd_erase_resume }; const struct ffsdrv_s ffsdrv_amd_sb = { ffsdrv_null_init, ffsdrv_ram_amd_sb_erase, ffsdrv_ram_amd_sb_write_halfword, ffsdrv_generic_write, ffsdrv_null_write_end, ffsdrv_null_erase_suspend, ffsdrv_null_erase_resume }; const struct ffsdrv_s ffsdrv_sst = { ffsdrv_null_init, ffsdrv_sst_erase, ffsdrv_amd_write_halfword, // Use AMD driver function ffsdrv_sst_write, ffsdrv_amd_write_end, // Use AMD driver function ffsdrv_sst_erase_suspend, ffsdrv_null_erase_resume }; const struct ffsdrv_s ffsdrv_sst_sb = { ffsdrv_null_init, ffsdrv_null_erase, ffsdrv_null_write_halfword, ffsdrv_null_write, ffsdrv_null_write_end, ffsdrv_null_erase_suspend, ffsdrv_null_erase_resume }; // We use the functions ffsdrv_ram_intel_sb_write_halfword and // ffsdrv_ram_intel_erase due to the bug in the intel wireless flash // device. See 28F640W30.pdf specification Errata 5. const struct ffsdrv_s ffsdrv_intel = { ffsdrv_null_init, ffsdrv_intel_erase, ffsdrv_intel_write_halfword, ffsdrv_generic_write, ffsdrv_intel_write_end, ffsdrv_intel_erase_suspend, ffsdrv_intel_erase_resume }; const struct ffsdrv_s ffsdrv_intel_sb = { ffsdrv_null_init, ffsdrv_ram_intel_sb_erase, ffsdrv_ram_intel_sb_write_halfword, ffsdrv_generic_write, ffsdrv_null_write_end, ffsdrv_null_erase_suspend, ffsdrv_null_erase_resume }; const struct ffsdrv_s ffsdrv_null = { ffsdrv_null_init, ffsdrv_null_erase, ffsdrv_null_write_halfword, ffsdrv_null_write, ffsdrv_null_write_end, ffsdrv_null_erase_suspend, ffsdrv_null_erase_resume }; const struct ffsdrv_s ffsdrv_amd_pseudo_sb = { ffsdrv_null_init, ffsdrv_amd_pseudo_sb_erase, ffsdrv_amd_pseudo_sb_write_halfword, ffsdrv_generic_write, ffsdrv_null_write_end, ffsdrv_null_erase_suspend, ffsdrv_null_erase_resume }; const struct ffsdrv_s ffsdrv_ram = { ffsdrv_null_init, ffsdrv_ram_erase, ffsdrv_ram_write_halfword, ffsdrv_ram_write, ffsdrv_null_write_end, ffsdrv_null_erase_suspend, ffsdrv_null_erase_resume }; #if (TARGET == 0) const struct ffsdrv_s ffsdrv_test = { ffsdrv_null_init, ffsdrv_test_erase, ffsdrv_test_write_halfword, ffsdrv_test_write, ffsdrv_null_write_end, ffsdrv_null_erase_suspend, ffsdrv_null_erase_resume }; #endif // Note: This function is designed for little-endian memory addressing! void ffsdrv_write_byte(void *dst, uint8 value) { uint16 halfword; tw(tr(TR_FUNC, TrDrvWrite, "ffsdrv_write_byte(0x%05x, 0x%x)\n", (int) (addr2offset(dst)), value)); ttw(str(TTrDrvWrite, "wb" NL)); if ((int) dst & 1) halfword = (value << 8) | *((uint8 *) dst - 1); else halfword = (*((uint8 *) dst + 1) << 8) | (value); ffsdrv.write_halfword((uint16 *) ((int) dst & ~1), halfword); } extern uint16 ffs_flash_manufact; extern uint16 ffs_flash_device; effs_t ffsdrv_init(void) { const struct ffsdrv_s *p; const struct flash_info_s *flash = &flash_info[0]; int error; tw(tr(TR_BEGIN, TrDrvInit, "drv_init() {\n")); ttw(str(TTrDrvOther, "ffsdrv_init() {" NL)); dev.state = DEV_READ; dev.binfo = 0; dev.base = 0; dev.numblocks = 0; // If ffs_flash_device is zero, detect device automatically by copying // the detect function into RAM and execute it from there... if (ffs_flash_manufact == 0 && ffs_flash_device == 0) { #if (TARGET == 1) char detect_code[0x80]; typedef (*pf_t)(uint16 *, uint16 *); pf_t myfp; uint16 device_id[3]; ffsdrv_device_id_read_copy_to_ram((uint16 *) detect_code, sizeof(detect_code)); // Combine bit 0 of the thumb mode function pointer with the address // of the code in RAM. Then call the detect function in RAM. #ifdef __GNUC__ /* gcc fails to do the needed trick, so force Thumb */ myfp = (pf_t) (((int) detect_code) | 1); #else myfp = (pf_t) (((int) &ffsdrv_device_id_read & 1) | (int) detect_code); #endif (*myfp)(&dev.manufact, device_id); if ((dev.manufact == MANUFACT_AMD || dev.manufact == MANUFACT_FUJITSU) && device_id[0] == 0x227E) { // This is a multi-id device dev.device = (device_id[1] << 8) | (device_id[2] & 0xFF); #if defined(CONFIG_TARGET_PIRELLI) || \ defined(CONFIG_TARGET_FCFAM) || \ defined(CONFIG_TARGET_SE_K2X0) if (device_id[1] == 0x2221 && device_id[2] == 0x2200) dev.device += ffsdrv_is_new_spansion_flash(); #endif } else if (dev.manufact == MANUFACT_SAMSUNG && device_id[0] == 0x257E) { /* Samsung's version of extended ID */ dev.device = (device_id[1] << 8) | (device_id[2] & 0xFF); } else dev.device = device_id[0]; #endif } else { dev.manufact = ffs_flash_manufact; dev.device = ffs_flash_device; } tw(tr(TR_FUNC, TrDrvInit, "TARGET = %d\n", TARGET)); tw(tr(TR_FUNC, TrDrvInit, "Looking up device (0x%2x,0x%4x): ", dev.manufact, dev.device)); while (flash->manufact) { tw(tr(TR_NULL, TrDrvInit, "(0x%02x,0x%04x) ", flash->manufact, flash->device)); if (dev.manufact == flash->manufact && dev.device == flash->device) { tw(tr(TR_NULL, TrDrvInit, "FOUND ")); break; } flash++; } tw(tr(TR_NULL, TrDrvInit, "\n")); if (flash->manufact == 0) { tw(tr(TR_END, TrDrvInit, "} (%d)\n", EFFS_NODEVICE)); return EFFS_NODEVICE; } dev.binfo = (struct block_info_s *) flash->binfo; if (flash->driver == FFS_DRIVER_RAM && flash->base == 0) { if (ffs_ram_image_address <= 0) { tw(tr(TR_END, TrDrvInit, "} (%d)\n", EFFS_DRIVER)); return EFFS_DRIVER; } dev.base = (char *) ffs_ram_image_address; } else dev.base = (char *) flash->base; dev.numblocks = flash->numblocks; dev.driver = flash->driver; // We assume that ALL blocks are of equal size dev.blocksize_ld = dev.binfo[0].size_ld; dev.blocksize = (1 << dev.blocksize_ld); dev.atomlog2 = FFS_ATOM_LOG2; dev.atomsize = 1 << dev.atomlog2; dev.atomnotmask = dev.atomsize - 1; #if (TARGET == 0) if (dev.manufact == MANUFACT_TEST) dev.base = ffsdrv_test_create(); p = &ffsdrv_test; #else // (TARGET == 1) // Initialize hardware independent driver functions array switch (dev.driver) { case FFS_DRIVER_AMD: p = &ffsdrv_amd; break; case FFS_DRIVER_AMD_SB: p = &ffsdrv_amd_sb; break; case FFS_DRIVER_SST: p = &ffsdrv_sst; break; case FFS_DRIVER_SST_SB: p = &ffsdrv_sst_sb; break; case FFS_DRIVER_INTEL: p = &ffsdrv_intel; break; case FFS_DRIVER_INTEL_SB: p = &ffsdrv_intel_sb; break; case FFS_DRIVER_AMD_PSEUDO_SB: p = &ffsdrv_amd_pseudo_sb; break; case FFS_DRIVER_RAM: p = &ffsdrv_ram; break; default: p = &ffsdrv_null; break; } #endif // (TARGET == 0) // Bind the driver functions ffsdrv.init = p->init; ffsdrv.erase = p->erase; ffsdrv.write_halfword = p->write_halfword; ffsdrv.write = p->write; ffsdrv.write_end = p->write_end; ffsdrv.erase_suspend = p->erase_suspend; ffsdrv.erase_resume = p->erase_resume; // Copy single bank driver code to RAM (and possibly re-bind some of the // driver functions) error = ffsdrv_driver_copy_to_ram(dev.driver); if (error >= 0) error = ffsdrv.init(); tw(tr(TR_FUNC, TrDrvInit, "dev.binfo = 0x%x\n", (unsigned int) dev.binfo)); tw(tr(TR_FUNC, TrDrvInit, "dev.base = 0x%x\n", (unsigned int) dev.base)); tw(tr(TR_FUNC, TrDrvInit, "dev.numblocks = %d\n", dev.numblocks)); tw(tr(TR_FUNC, TrDrvInit, "dev.blocksize = %d\n", dev.blocksize)); tw(tr(TR_FUNC, TrDrvInit, "dev.atomlog2/atomsize/atomnotmask = %d/%d/%x\n", dev.atomlog2, dev.atomsize, dev.atomnotmask)); tw(tr(TR_END, TrDrvInit, "} %d\n", error)); ttw(ttr(TTrDrvOther, "} %d" NL, error)); return error; } /****************************************************************************** * Interrupt Enable/Disable ******************************************************************************/ // IMPORTANT NOTE! Apparently, locating this ARM assembly code at the top of // this file will make the compiler trash the A1 register between the calls // of arm_int_disable and arm_int_enable() thus crashing the whole system. // If the code is placed AFTER the usage of the functions, the compiler // saves the A1 register. Strange but true. // IMPORTANT NOTE! Apparently, another strange thing is that if the // functions are declared static, they don't work! // Executing code from RAM is NOT trivial when we need to jump between ROM // (flash) and RAM memory. The ARM only supports 26-bit relative branch // offsets. This is the reason why we have a local copy of the // arm_int_disable/enable() functions in this file plus each of the // single-bank drivers. #if (TARGET == 1) // Note that we use our own interrupt disable/enable function because // Nucleus allegedly should have a bug in its implementation for this. #ifdef __GNUC__ #define NOINLINE __attribute__ ((noinline)) #else #define NOINLINE #endif uint32 NOINLINE int_disable(void) { #ifdef __GNUC__ asm(" .code 16"); #else asm(" .state16"); #endif asm(" mov A1, #0xC0"); asm(" ldr A2, tct_disable"); asm(" bx A2 "); #ifdef __GNUC__ asm(".balign 4"); asm("tct_disable:"); asm(" .word TCT_Control_Interrupts"); #else asm("tct_disable .field _TCT_Control_Interrupts+0,32"); asm(" .global _TCT_Control_Interrupts"); #endif } void NOINLINE int_enable(uint32 cpsr) { #ifdef __GNUC__ asm(" .code 16"); #else asm(" .state16"); #endif asm(" ldr A2, tct_enable"); asm(" bx A2 "); #ifdef __GNUC__ asm(".balign 4"); asm("tct_enable:"); asm(" .word TCT_Control_Interrupts"); #else asm("tct_enable .field _TCT_Control_Interrupts+0,32"); asm(" .global _TCT_Control_Interrupts"); #endif } #else uint32 int_disable(void) { return 0; } void int_enable(uint32 tmp) {} #endif // (TARGET == 1)