diff options
Diffstat (limited to 'board/mcc200/auto_update.c')
| -rw-r--r-- | board/mcc200/auto_update.c | 469 |
1 files changed, 469 insertions, 0 deletions
diff --git a/board/mcc200/auto_update.c b/board/mcc200/auto_update.c new file mode 100644 index 0000000..786543e --- /dev/null +++ b/board/mcc200/auto_update.c @@ -0,0 +1,469 @@ +/* + * (C) Copyright 2006 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * 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 <command.h> +#include <malloc.h> +#include <image.h> +#include <asm/byteorder.h> +#include <usb.h> + +#ifdef CFG_HUSH_PARSER +#include <hush.h> +#endif + + +#ifdef CONFIG_AUTO_UPDATE + +#ifndef CONFIG_USB_OHCI +#error "must define CONFIG_USB_OHCI" +#endif + +#ifndef CONFIG_USB_STORAGE +#error "must define CONFIG_USB_STORAGE" +#endif + +#ifndef CFG_HUSH_PARSER +#error "must define CFG_HUSH_PARSER" +#endif + +#if !(CONFIG_COMMANDS & CFG_CMD_FAT) +#error "must define CFG_CMD_FAT" +#endif + +/* + * Check whether a USB memory stick is plugged in. + * If one is found: + * 1) if prepare.img ist found load it into memory. If it is + * valid then run it. + * 2) if preinst.img is found load it into memory. If it is + * valid then run it. Update the EEPROM. + * 3) if firmw_01.img is found load it into memory. If it is valid, + * burn it into FLASH and update the EEPROM. + * 4) if kernl_01.img is found load it into memory. If it is valid, + * burn it into FLASH and update the EEPROM. + * 5) if app.img is found load it into memory. If it is valid, + * burn it into FLASH and update the EEPROM. + * 6) if disk.img is found load it into memory. If it is valid, + * burn it into FLASH and update the EEPROM. + * 7) if postinst.img is found load it into memory. If it is + * valid then run it. Update the EEPROM. + */ + +#undef AU_DEBUG + +#undef debug +#ifdef AU_DEBUG +#define debug(fmt,args...) printf (fmt ,##args) +#else +#define debug(fmt,args...) +#endif /* AU_DEBUG */ + +/* possible names of files on the USB stick. */ +#define AU_FIRMWARE "u-boot.img" +#define AU_KERNEL "kernel.img" + +struct flash_layout +{ + long start; + long end; +}; + +/* layout of the FLASH. ST = start address, ND = end address. */ +#define AU_FL_FIRMWARE_ST 0xfC000000 +#define AU_FL_FIRMWARE_ND 0xfC03FFFF +#define AU_FL_KERNEL_ST 0xfC0C0000 +#define AU_FL_KERNEL_ND 0xfC1BFFFF + +static int au_usb_stor_curr_dev; /* current device */ + +/* index of each file in the following arrays */ +#define IDX_FIRMWARE 0 +#define IDX_KERNEL 1 + +/* max. number of files which could interest us */ +#define AU_MAXFILES 2 + +/* pointers to file names */ +char *aufile[AU_MAXFILES]; + +/* sizes of flash areas for each file */ +long ausize[AU_MAXFILES]; + +/* array of flash areas start and end addresses */ +struct flash_layout aufl_layout[AU_MAXFILES] = { \ + {AU_FL_FIRMWARE_ST, AU_FL_FIRMWARE_ND,}, \ + {AU_FL_KERNEL_ST, AU_FL_KERNEL_ND,}, \ +}; + +/* where to load files into memory */ +#define LOAD_ADDR ((unsigned char *)0x00200000) + +/* the app is the largest image */ +#define MAX_LOADSZ ausize[IDX_KERNEL] + +/*i2c address of the keypad status*/ +#define I2C_PSOC_KEYPAD_ADDR 0x53 + +/* keypad mask */ +#define KEYPAD_ROW 3 +#define KEYPAD_COL 3 +#define KEYPAD_MASK_LO ((1<<(KEYPAD_COL-1+(KEYPAD_ROW*4-4)))&0xFF) +#define KEYPAD_MASK_HI ((1<<(KEYPAD_COL-1+(KEYPAD_ROW*4-4)))>>8) + +/* externals */ +extern int fat_register_device(block_dev_desc_t *, int); +extern int file_fat_detectfs(void); +extern long file_fat_read(const char *, void *, unsigned long); +extern int i2c_read (unsigned char, unsigned int, int , unsigned char* , int); +extern int flash_sect_erase(ulong, ulong); +extern int flash_sect_protect (int, ulong, ulong); +extern int flash_write (char *, ulong, ulong); +/* change char* to void* to shutup the compiler */ +extern block_dev_desc_t *get_dev (char*, int); +extern int u_boot_hush_start(void); + +int +au_check_cksum_valid(int idx, long nbytes) +{ + image_header_t *hdr; + unsigned long checksum; + + hdr = (image_header_t *)LOAD_ADDR; + + if (nbytes != (sizeof(*hdr) + ntohl(hdr->ih_size))) + { + printf ("Image %s bad total SIZE\n", aufile[idx]); + return -1; + } + /* check the data CRC */ + checksum = ntohl(hdr->ih_dcrc); + + if (crc32 (0, (uchar *)(LOAD_ADDR + sizeof(*hdr)), ntohl(hdr->ih_size)) + != checksum) + { + printf ("Image %s bad data checksum\n", aufile[idx]); + return -1; + } + return 0; +} + +int +au_check_header_valid(int idx, long nbytes) +{ + image_header_t *hdr; + unsigned long checksum; + unsigned char buf[4]; + + hdr = (image_header_t *)LOAD_ADDR; + /* check the easy ones first */ +#undef CHECK_VALID_DEBUG +#ifdef CHECK_VALID_DEBUG + printf("magic %#x %#x ", ntohl(hdr->ih_magic), IH_MAGIC); + printf("arch %#x %#x ", hdr->ih_arch, IH_CPU_ARM); + printf("size %#x %#lx ", ntohl(hdr->ih_size), nbytes); + printf("type %#x %#x ", hdr->ih_type, IH_TYPE_KERNEL); +#endif + if (nbytes < sizeof(*hdr)) + { + printf ("Image %s bad header SIZE\n", aufile[idx]); + return -1; + } + if (ntohl(hdr->ih_magic) != IH_MAGIC || hdr->ih_arch != IH_CPU_PPC) + { + printf ("Image %s bad MAGIC or ARCH\n", aufile[idx]); + return -1; + } + /* check the hdr CRC */ + checksum = ntohl(hdr->ih_hcrc); + hdr->ih_hcrc = 0; + + if (crc32 (0, (uchar *)hdr, sizeof(*hdr)) != checksum) { + printf ("Image %s bad header checksum\n", aufile[idx]); + return -1; + } + hdr->ih_hcrc = htonl(checksum); + /* check the type - could do this all in one gigantic if() */ + if ((idx == IDX_FIRMWARE) && (hdr->ih_type != IH_TYPE_FIRMWARE)) { + printf ("Image %s wrong type\n", aufile[idx]); + return -1; + } + if ((idx == IDX_KERNEL) && (hdr->ih_type != IH_TYPE_KERNEL)) { + printf ("Image %s wrong type\n", aufile[idx]); + return -1; + } + /* recycle checksum */ + checksum = ntohl(hdr->ih_size); + /* for kernel and app the image header must also fit into flash */ + if (idx != IDX_FIRMWARE) + checksum += sizeof(*hdr); + /* check the size does not exceed space in flash. HUSH scripts */ + /* all have ausize[] set to 0 */ + if ((ausize[idx] != 0) && (ausize[idx] < checksum)) { + printf ("Image %s is bigger than FLASH\n", aufile[idx]); + return -1; + } + return 0; +} + + +int +au_do_update(int idx, long sz) +{ + image_header_t *hdr; + char *addr; + long start, end; + int off, rc; + uint nbytes; + + hdr = (image_header_t *)LOAD_ADDR; + + /* execute a script */ + if (hdr->ih_type == IH_TYPE_SCRIPT) { + addr = (char *)((char *)hdr + sizeof(*hdr)); + /* stick a NULL at the end of the script, otherwise */ + /* parse_string_outer() runs off the end. */ + addr[ntohl(hdr->ih_size)] = 0; + addr += 8; + parse_string_outer(addr, FLAG_PARSE_SEMICOLON); + return 0; + } + + start = aufl_layout[idx].start; + end = aufl_layout[idx].end; + + /* unprotect the address range */ + /* this assumes that ONLY the firmware is protected! */ + if (idx == IDX_FIRMWARE) { +#undef AU_UPDATE_TEST +#ifdef AU_UPDATE_TEST + /* erase it where Linux goes */ + start = aufl_layout[1].start; + end = aufl_layout[1].end; +#endif + flash_sect_protect(0, start, end); + } + + /* + * erase the address range. + */ + debug ("flash_sect_erase(%lx, %lx);\n", start, end); + flash_sect_erase(start, end); + wait_ms(100); + /* strip the header - except for the kernel and ramdisk */ + if (hdr->ih_type == IH_TYPE_KERNEL) { + addr = (char *)hdr; + off = sizeof(*hdr); + nbytes = sizeof(*hdr) + ntohl(hdr->ih_size); + } else { + addr = (char *)((char *)hdr + sizeof(*hdr)); +#ifdef AU_UPDATE_TEST + /* copy it to where Linux goes */ + if (idx == IDX_FIRMWARE) + start = aufl_layout[1].start; +#endif + off = 0; + nbytes = ntohl(hdr->ih_size); + } + + /* copy the data from RAM to FLASH */ + debug ("flash_write(%p, %lx %x)\n", addr, start, nbytes); + rc = flash_write(addr, start, nbytes); + if (rc != 0) { + printf("Flashing failed due to error %d\n", rc); + return -1; + } + + /* check the dcrc of the copy */ + if (crc32 (0, (uchar *)(start + off), ntohl(hdr->ih_size)) != ntohl(hdr->ih_dcrc)) { + printf ("Image %s Bad Data Checksum After COPY\n", aufile[idx]); + return -1; + } + + /* protect the address range */ + /* this assumes that ONLY the firmware is protected! */ + if (idx == IDX_FIRMWARE) + flash_sect_protect(1, start, end); + return 0; +} + + +/* + * this is called from board_init() after the hardware has been set up + * and is usable. That seems like a good time to do this. + * Right now the return value is ignored. + */ +int +do_auto_update(void) +{ + block_dev_desc_t *stor_dev; + long sz; + int i, res, bitmap_first, cnt, old_ctrlc, got_ctrlc; + char *env; + long start, end; + char keypad_status1[2] = {0,0}, keypad_status2[2] = {0,0}; + + /* + * Read keypad status + */ + i2c_read(I2C_PSOC_KEYPAD_ADDR, 0, 0, keypad_status1, 2); + wait_ms(500); + i2c_read(I2C_PSOC_KEYPAD_ADDR, 0, 0, keypad_status2, 2); + + /* + * Check keypad + */ + if ( !(keypad_status1[0] & KEYPAD_MASK_HI) || + (keypad_status1[0] != keypad_status2[0])) { + return 0; + } + if ( !(keypad_status1[1] & KEYPAD_MASK_LO) || + (keypad_status1[1] != keypad_status2[1])) { + return 0; + } + au_usb_stor_curr_dev = -1; + /* start USB */ + if (usb_stop() < 0) { + debug ("usb_stop failed\n"); + return -1; + } + if (usb_init() < 0) { + debug ("usb_init failed\n"); + return -1; + } + /* + * check whether a storage device is attached (assume that it's + * a USB memory stick, since nothing else should be attached). + */ + au_usb_stor_curr_dev = usb_stor_scan(0); + if (au_usb_stor_curr_dev == -1) { + debug ("No device found. Not initialized?\n"); + return -1; + } + /* check whether it has a partition table */ + stor_dev = get_dev("usb", 0); + if (stor_dev == NULL) { + debug ("uknown device type\n"); + return -1; + } + if (fat_register_device(stor_dev, 1) != 0) { + debug ("Unable to use USB %d:%d for fatls\n", + au_usb_stor_curr_dev, 1); + return -1; + } + if (file_fat_detectfs() != 0) { + debug ("file_fat_detectfs failed\n"); + } + + /* initialize the array of file names */ + memset(aufile, 0, sizeof(aufile)); + aufile[IDX_FIRMWARE] = AU_FIRMWARE; + aufile[IDX_KERNEL] = AU_KERNEL; + /* initialize the array of flash sizes */ + memset(ausize, 0, sizeof(ausize)); + ausize[IDX_FIRMWARE] = (AU_FL_FIRMWARE_ND + 1) - AU_FL_FIRMWARE_ST; + ausize[IDX_KERNEL] = (AU_FL_KERNEL_ND + 1) - AU_FL_KERNEL_ST; + /* + * now check whether start and end are defined using environment + * variables. + */ + start = -1; + end = 0; + env = getenv("firmware_st"); + if (env != NULL) + start = simple_strtoul(env, NULL, 16); + env = getenv("firmware_nd"); + if (env != NULL) + end = simple_strtoul(env, NULL, 16); + if (start >= 0 && end && end > start) { + ausize[IDX_FIRMWARE] = (end + 1) - start; + aufl_layout[0].start = start; + aufl_layout[0].end = end; + } + start = -1; + end = 0; + env = getenv("kernel_st"); + if (env != NULL) + start = simple_strtoul(env, NULL, 16); + env = getenv("kernel_nd"); + if (env != NULL) + end = simple_strtoul(env, NULL, 16); + if (start >= 0 && end && end > start) { + ausize[IDX_KERNEL] = (end + 1) - start; + aufl_layout[1].start = start; + aufl_layout[1].end = end; + } + /* make certain that HUSH is runnable */ + u_boot_hush_start(); + /* make sure that we see CTRL-C and save the old state */ + old_ctrlc = disable_ctrlc(0); + + bitmap_first = 0; + /* just loop thru all the possible files */ + for (i = 0; i < AU_MAXFILES; i++) { + /* just read the header */ + sz = file_fat_read(aufile[i], LOAD_ADDR, sizeof(image_header_t)); + debug ("read %s sz %ld hdr %d\n", + aufile[i], sz, sizeof(image_header_t)); + if (sz <= 0 || sz < sizeof(image_header_t)) { + debug ("%s not found\n", aufile[i]); + continue; + } + if (au_check_header_valid(i, sz) < 0) { + debug ("%s header not valid\n", aufile[i]); + continue; + } + sz = file_fat_read(aufile[i], LOAD_ADDR, MAX_LOADSZ); + debug ("read %s sz %ld hdr %d\n", + aufile[i], sz, sizeof(image_header_t)); + if (sz <= 0 || sz <= sizeof(image_header_t)) { + debug ("%s not found\n", aufile[i]); + continue; + } + if (au_check_cksum_valid(i, sz) < 0) { + debug ("%s checksum not valid\n", aufile[i]); + continue; + } + /* this is really not a good idea, but it's what the */ + /* customer wants. */ + cnt = 0; + got_ctrlc = 0; + do { + res = au_do_update(i, sz); + /* let the user break out of the loop */ + if (ctrlc() || had_ctrlc()) { + clear_ctrlc(); + if (res < 0) + got_ctrlc = 1; + break; + } + cnt++; +#ifdef AU_TEST_ONLY + } while (res < 0 && cnt < 3); + if (cnt < 3) +#else + } while (res < 0); +#endif + } + usb_stop(); + /* restore the old state */ + disable_ctrlc(old_ctrlc); + return 0; +} +#endif /* CONFIG_AUTO_UPDATE */ |