mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-19 08:28:51 +09:00
458 lines
12 KiB
C
458 lines
12 KiB
C
/*
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* (C) Copyright 2006
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <command.h>
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#include <malloc.h>
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#include <image.h>
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#include <asm/byteorder.h>
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#include <usb.h>
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#ifdef CFG_HUSH_PARSER
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#include <hush.h>
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#endif
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#ifdef CONFIG_AUTO_UPDATE
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#ifndef CONFIG_USB_OHCI
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#error "must define CONFIG_USB_OHCI"
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#endif
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#ifndef CONFIG_USB_STORAGE
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#error "must define CONFIG_USB_STORAGE"
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#endif
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#ifndef CFG_HUSH_PARSER
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#error "must define CFG_HUSH_PARSER"
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#endif
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#if !(CONFIG_COMMANDS & CFG_CMD_FAT)
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#error "must define CFG_CMD_FAT"
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#endif
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/*
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* Check whether a USB memory stick is plugged in.
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* If one is found:
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* 1) if prepare.img ist found load it into memory. If it is
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* valid then run it.
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* 2) if preinst.img is found load it into memory. If it is
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* valid then run it. Update the EEPROM.
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* 3) if firmw_01.img is found load it into memory. If it is valid,
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* burn it into FLASH and update the EEPROM.
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* 4) if kernl_01.img is found load it into memory. If it is valid,
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* burn it into FLASH and update the EEPROM.
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* 5) if app.img is found load it into memory. If it is valid,
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* burn it into FLASH and update the EEPROM.
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* 6) if disk.img is found load it into memory. If it is valid,
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* burn it into FLASH and update the EEPROM.
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* 7) if postinst.img is found load it into memory. If it is
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* valid then run it. Update the EEPROM.
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*/
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#undef AU_DEBUG
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#undef debug
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#ifdef AU_DEBUG
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#define debug(fmt,args...) printf (fmt ,##args)
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#else
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#define debug(fmt,args...)
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#endif /* AU_DEBUG */
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/* possible names of files on the USB stick. */
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#define AU_FIRMWARE "u-boot.img"
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#define AU_KERNEL "kernel.img"
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struct flash_layout {
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long start;
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long end;
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};
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/* layout of the FLASH. ST = start address, ND = end address. */
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#define AU_FL_FIRMWARE_ST 0xfC000000
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#define AU_FL_FIRMWARE_ND 0xfC03FFFF
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#define AU_FL_KERNEL_ST 0xfC0C0000
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#define AU_FL_KERNEL_ND 0xfC1BFFFF
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static int au_usb_stor_curr_dev; /* current device */
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/* index of each file in the following arrays */
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#define IDX_FIRMWARE 0
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#define IDX_KERNEL 1
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/* max. number of files which could interest us */
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#define AU_MAXFILES 2
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/* pointers to file names */
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char *aufile[AU_MAXFILES];
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/* sizes of flash areas for each file */
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long ausize[AU_MAXFILES];
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/* array of flash areas start and end addresses */
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struct flash_layout aufl_layout[AU_MAXFILES] = { \
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{AU_FL_FIRMWARE_ST, AU_FL_FIRMWARE_ND,}, \
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{AU_FL_KERNEL_ST, AU_FL_KERNEL_ND,}, \
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};
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/* where to load files into memory */
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#define LOAD_ADDR ((unsigned char *)0x00200000)
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/* the app is the largest image */
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#define MAX_LOADSZ ausize[IDX_KERNEL]
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/*i2c address of the keypad status*/
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#define I2C_PSOC_KEYPAD_ADDR 0x53
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/* keypad mask */
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#define KEYPAD_ROW 3
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#define KEYPAD_COL 3
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#define KEYPAD_MASK_LO ((1<<(KEYPAD_COL-1+(KEYPAD_ROW*4-4)))&0xFF)
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#define KEYPAD_MASK_HI ((1<<(KEYPAD_COL-1+(KEYPAD_ROW*4-4)))>>8)
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/* externals */
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extern int fat_register_device(block_dev_desc_t *, int);
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extern int file_fat_detectfs(void);
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extern long file_fat_read(const char *, void *, unsigned long);
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extern int i2c_read (unsigned char, unsigned int, int , unsigned char* , int);
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extern int flash_sect_erase(ulong, ulong);
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extern int flash_sect_protect (int, ulong, ulong);
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extern int flash_write (char *, ulong, ulong);
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/* change char* to void* to shutup the compiler */
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extern block_dev_desc_t *get_dev (char*, int);
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extern int u_boot_hush_start(void);
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int au_check_cksum_valid(int idx, long nbytes)
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{
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image_header_t *hdr;
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unsigned long checksum;
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hdr = (image_header_t *)LOAD_ADDR;
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if (nbytes != (sizeof(*hdr) + ntohl(hdr->ih_size))) {
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printf ("Image %s bad total SIZE\n", aufile[idx]);
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return -1;
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}
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/* check the data CRC */
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checksum = ntohl(hdr->ih_dcrc);
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if (crc32 (0, (uchar *)(LOAD_ADDR + sizeof(*hdr)), ntohl(hdr->ih_size)) != checksum) {
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printf ("Image %s bad data checksum\n", aufile[idx]);
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return -1;
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}
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return 0;
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}
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int au_check_header_valid(int idx, long nbytes)
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{
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image_header_t *hdr;
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unsigned long checksum;
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unsigned char buf[4];
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hdr = (image_header_t *)LOAD_ADDR;
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/* check the easy ones first */
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#undef CHECK_VALID_DEBUG
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#ifdef CHECK_VALID_DEBUG
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printf("magic %#x %#x ", ntohl(hdr->ih_magic), IH_MAGIC);
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printf("arch %#x %#x ", hdr->ih_arch, IH_CPU_ARM);
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printf("size %#x %#lx ", ntohl(hdr->ih_size), nbytes);
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printf("type %#x %#x ", hdr->ih_type, IH_TYPE_KERNEL);
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#endif
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if (nbytes < sizeof(*hdr)) {
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printf ("Image %s bad header SIZE\n", aufile[idx]);
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return -1;
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}
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if (ntohl(hdr->ih_magic) != IH_MAGIC || hdr->ih_arch != IH_CPU_PPC) {
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printf ("Image %s bad MAGIC or ARCH\n", aufile[idx]);
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return -1;
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}
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/* check the hdr CRC */
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checksum = ntohl(hdr->ih_hcrc);
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hdr->ih_hcrc = 0;
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if (crc32 (0, (uchar *)hdr, sizeof(*hdr)) != checksum) {
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printf ("Image %s bad header checksum\n", aufile[idx]);
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return -1;
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}
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hdr->ih_hcrc = htonl(checksum);
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/* check the type - could do this all in one gigantic if() */
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if ((idx == IDX_FIRMWARE) && (hdr->ih_type != IH_TYPE_FIRMWARE)) {
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printf ("Image %s wrong type\n", aufile[idx]);
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return -1;
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}
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if ((idx == IDX_KERNEL) && (hdr->ih_type != IH_TYPE_KERNEL)) {
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printf ("Image %s wrong type\n", aufile[idx]);
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return -1;
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}
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/* recycle checksum */
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checksum = ntohl(hdr->ih_size);
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/* for kernel and app the image header must also fit into flash */
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if (idx != IDX_FIRMWARE)
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checksum += sizeof(*hdr);
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/* check the size does not exceed space in flash. HUSH scripts */
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/* all have ausize[] set to 0 */
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if ((ausize[idx] != 0) && (ausize[idx] < checksum)) {
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printf ("Image %s is bigger than FLASH\n", aufile[idx]);
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return -1;
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}
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return 0;
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}
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int au_do_update(int idx, long sz)
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{
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image_header_t *hdr;
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char *addr;
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long start, end;
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int off, rc;
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uint nbytes;
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hdr = (image_header_t *)LOAD_ADDR;
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/* execute a script */
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if (hdr->ih_type == IH_TYPE_SCRIPT) {
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addr = (char *)((char *)hdr + sizeof(*hdr));
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/* stick a NULL at the end of the script, otherwise */
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/* parse_string_outer() runs off the end. */
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addr[ntohl(hdr->ih_size)] = 0;
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addr += 8;
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parse_string_outer(addr, FLAG_PARSE_SEMICOLON);
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return 0;
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}
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start = aufl_layout[idx].start;
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end = aufl_layout[idx].end;
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/* unprotect the address range */
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/* this assumes that ONLY the firmware is protected! */
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if (idx == IDX_FIRMWARE) {
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#undef AU_UPDATE_TEST
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#ifdef AU_UPDATE_TEST
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/* erase it where Linux goes */
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start = aufl_layout[1].start;
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end = aufl_layout[1].end;
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#endif
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flash_sect_protect(0, start, end);
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}
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/*
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* erase the address range.
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*/
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debug ("flash_sect_erase(%lx, %lx);\n", start, end);
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flash_sect_erase(start, end);
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wait_ms(100);
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/* strip the header - except for the kernel and ramdisk */
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if (hdr->ih_type == IH_TYPE_KERNEL) {
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addr = (char *)hdr;
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off = sizeof(*hdr);
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nbytes = sizeof(*hdr) + ntohl(hdr->ih_size);
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} else {
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addr = (char *)((char *)hdr + sizeof(*hdr));
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#ifdef AU_UPDATE_TEST
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/* copy it to where Linux goes */
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if (idx == IDX_FIRMWARE)
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start = aufl_layout[1].start;
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#endif
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off = 0;
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nbytes = ntohl(hdr->ih_size);
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}
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/* copy the data from RAM to FLASH */
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debug ("flash_write(%p, %lx %x)\n", addr, start, nbytes);
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rc = flash_write(addr, start, nbytes);
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if (rc != 0) {
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printf("Flashing failed due to error %d\n", rc);
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return -1;
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}
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/* check the dcrc of the copy */
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if (crc32 (0, (uchar *)(start + off), ntohl(hdr->ih_size)) != ntohl(hdr->ih_dcrc)) {
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printf ("Image %s Bad Data Checksum After COPY\n", aufile[idx]);
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return -1;
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}
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/* protect the address range */
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/* this assumes that ONLY the firmware is protected! */
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if (idx == IDX_FIRMWARE)
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flash_sect_protect(1, start, end);
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return 0;
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}
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/*
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* this is called from board_init() after the hardware has been set up
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* and is usable. That seems like a good time to do this.
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* Right now the return value is ignored.
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*/
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int do_auto_update(void)
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{
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block_dev_desc_t *stor_dev;
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long sz;
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int i, res, bitmap_first, cnt, old_ctrlc, got_ctrlc;
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char *env;
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long start, end;
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char keypad_status1[2] = {0,0}, keypad_status2[2] = {0,0};
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/*
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* Read keypad status
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*/
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i2c_read(I2C_PSOC_KEYPAD_ADDR, 0, 0, keypad_status1, 2);
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wait_ms(500);
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i2c_read(I2C_PSOC_KEYPAD_ADDR, 0, 0, keypad_status2, 2);
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/*
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* Check keypad
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*/
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if ( !(keypad_status1[0] & KEYPAD_MASK_HI) ||
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(keypad_status1[0] != keypad_status2[0])) {
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return 0;
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}
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if ( !(keypad_status1[1] & KEYPAD_MASK_LO) ||
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(keypad_status1[1] != keypad_status2[1])) {
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return 0;
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}
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au_usb_stor_curr_dev = -1;
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/* start USB */
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if (usb_stop() < 0) {
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debug ("usb_stop failed\n");
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return -1;
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}
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if (usb_init() < 0) {
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debug ("usb_init failed\n");
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return -1;
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}
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/*
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* check whether a storage device is attached (assume that it's
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* a USB memory stick, since nothing else should be attached).
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*/
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au_usb_stor_curr_dev = usb_stor_scan(0);
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if (au_usb_stor_curr_dev == -1) {
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debug ("No device found. Not initialized?\n");
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return -1;
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}
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/* check whether it has a partition table */
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stor_dev = get_dev("usb", 0);
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if (stor_dev == NULL) {
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debug ("uknown device type\n");
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return -1;
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}
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if (fat_register_device(stor_dev, 1) != 0) {
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debug ("Unable to use USB %d:%d for fatls\n",
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au_usb_stor_curr_dev, 1);
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return -1;
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}
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if (file_fat_detectfs() != 0) {
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debug ("file_fat_detectfs failed\n");
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}
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/* initialize the array of file names */
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memset(aufile, 0, sizeof(aufile));
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aufile[IDX_FIRMWARE] = AU_FIRMWARE;
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aufile[IDX_KERNEL] = AU_KERNEL;
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/* initialize the array of flash sizes */
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memset(ausize, 0, sizeof(ausize));
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ausize[IDX_FIRMWARE] = (AU_FL_FIRMWARE_ND + 1) - AU_FL_FIRMWARE_ST;
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ausize[IDX_KERNEL] = (AU_FL_KERNEL_ND + 1) - AU_FL_KERNEL_ST;
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/*
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* now check whether start and end are defined using environment
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* variables.
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*/
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start = -1;
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end = 0;
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env = getenv("firmware_st");
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if (env != NULL)
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start = simple_strtoul(env, NULL, 16);
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env = getenv("firmware_nd");
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if (env != NULL)
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end = simple_strtoul(env, NULL, 16);
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if (start >= 0 && end && end > start) {
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ausize[IDX_FIRMWARE] = (end + 1) - start;
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aufl_layout[0].start = start;
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aufl_layout[0].end = end;
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}
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start = -1;
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end = 0;
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env = getenv("kernel_st");
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if (env != NULL)
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start = simple_strtoul(env, NULL, 16);
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env = getenv("kernel_nd");
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if (env != NULL)
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end = simple_strtoul(env, NULL, 16);
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if (start >= 0 && end && end > start) {
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ausize[IDX_KERNEL] = (end + 1) - start;
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aufl_layout[1].start = start;
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aufl_layout[1].end = end;
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}
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/* make certain that HUSH is runnable */
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u_boot_hush_start();
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/* make sure that we see CTRL-C and save the old state */
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old_ctrlc = disable_ctrlc(0);
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bitmap_first = 0;
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/* just loop thru all the possible files */
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for (i = 0; i < AU_MAXFILES; i++) {
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/* just read the header */
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sz = file_fat_read(aufile[i], LOAD_ADDR, sizeof(image_header_t));
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debug ("read %s sz %ld hdr %d\n",
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aufile[i], sz, sizeof(image_header_t));
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if (sz <= 0 || sz < sizeof(image_header_t)) {
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debug ("%s not found\n", aufile[i]);
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continue;
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}
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if (au_check_header_valid(i, sz) < 0) {
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debug ("%s header not valid\n", aufile[i]);
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continue;
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}
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sz = file_fat_read(aufile[i], LOAD_ADDR, MAX_LOADSZ);
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debug ("read %s sz %ld hdr %d\n",
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aufile[i], sz, sizeof(image_header_t));
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if (sz <= 0 || sz <= sizeof(image_header_t)) {
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debug ("%s not found\n", aufile[i]);
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continue;
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}
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if (au_check_cksum_valid(i, sz) < 0) {
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debug ("%s checksum not valid\n", aufile[i]);
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continue;
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}
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/* this is really not a good idea, but it's what the */
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/* customer wants. */
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cnt = 0;
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got_ctrlc = 0;
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do {
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res = au_do_update(i, sz);
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/* let the user break out of the loop */
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if (ctrlc() || had_ctrlc()) {
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clear_ctrlc();
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if (res < 0)
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got_ctrlc = 1;
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break;
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}
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cnt++;
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#ifdef AU_TEST_ONLY
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} while (res < 0 && cnt < 3);
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if (cnt < 3)
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#else
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} while (res < 0);
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#endif
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}
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usb_stop();
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/* restore the old state */
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disable_ctrlc(old_ctrlc);
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return 0;
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}
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#endif /* CONFIG_AUTO_UPDATE */
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