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Diffstat (limited to 'bootloader/common.c')
| -rw-r--r-- | bootloader/common.c | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/bootloader/common.c b/bootloader/common.c new file mode 100644 index 0000000..410fd42 --- /dev/null +++ b/bootloader/common.c @@ -0,0 +1,205 @@ +/*************************************************************************** + * __________ __ ___. + * Open \______ \ ____ ____ | | _\_ |__ _______ ___ + * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / + * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < + * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ + * \/ \/ \/ \/ \/ + * $Id: main.c 11997 2007-01-13 09:08:18Z miipekk $ + * + * Copyright (C) 2005 by Linus Nielsen Feltzing + * + * All files in this archive are subject to the GNU General Public License. + * See the file COPYING in the source tree root for full license agreement. + * + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY + * KIND, either express or implied. + * + ****************************************************************************/ +#include "lcd.h" +#include "lcd-remote.h" +#include "font.h" +#include "system.h" +#include <stdarg.h> +#include <stdio.h> +#include "cpu.h" +#include "common.h" + +int line = 0; +#ifdef HAVE_REMOTE_LCD +int remote_line = 0; +#endif + +char printfbuf[256]; + +void reset_screen(void) +{ + lcd_clear_display(); + line = 0; +#ifdef HAVE_REMOTE_LCD + lcd_remote_clear_display(); + remote_line = 0; +#endif +} + +void printf(const char *format, ...) +{ + int len; + unsigned char *ptr; + va_list ap; + va_start(ap, format); + + ptr = printfbuf; + len = vsnprintf(ptr, sizeof(printfbuf), format, ap); + va_end(ap); + + lcd_puts(0, line++, ptr); + lcd_update(); + if(line >= LCD_HEIGHT/SYSFONT_HEIGHT) + line = 0; +#ifdef HAVE_REMOTE_LCD + lcd_remote_puts(0, remote_line++, ptr); + lcd_remote_update(); + if(remote_line >= LCD_REMOTE_HEIGHT/SYSFONT_HEIGHT) + remote_line = 0; +#endif +} + +char *strerror(int error) +{ + switch(error) + { + case EOK: + return "OK"; + case EFILE_NOT_FOUND: + return "File not found"; + case EREAD_CHKSUM_FAILED: + return "Read failed (chksum)"; + case EREAD_MODEL_FAILED: + return "Read failed (model)"; + case EREAD_IMAGE_FAILED: + return "Read failed (image)"; + case EBAD_CHKSUM: + return "Bad checksum"; + case EFILE_TOO_BIG: + return "File too big"; + default: + return "Unknown"; + } +} + +/* Load firmware image in a format created by tools/scramble */ +int load_firmware(unsigned char* buf, char* firmware, int buffer_size) +{ + int fd; + int rc; + int len; + unsigned long chksum; + char model[5]; + unsigned long sum; + int i; + char filename[MAX_PATH]; + + snprintf(filename,sizeof(filename),"/.rockbox/%s",firmware); + fd = open(filename, O_RDONLY); + if(fd < 0) + { + snprintf(filename,sizeof(filename),"/%s",firmware); + fd = open(filename, O_RDONLY); + if(fd < 0) + return EFILE_NOT_FOUND; + } + + len = filesize(fd) - 8; + + printf("Length: %x", len); + + if (len > buffer_size) + return EFILE_TOO_BIG; + + lseek(fd, FIRMWARE_OFFSET_FILE_CRC, SEEK_SET); + + rc = read(fd, &chksum, 4); + chksum=betoh32(chksum); /* Rockbox checksums are big-endian */ + if(rc < 4) + return EREAD_CHKSUM_FAILED; + + printf("Checksum: %x", chksum); + + rc = read(fd, model, 4); + if(rc < 4) + return EREAD_MODEL_FAILED; + + model[4] = 0; + + printf("Model name: %s", model); + printf("Loading %s", firmware); + + lseek(fd, FIRMWARE_OFFSET_FILE_DATA, SEEK_SET); + + rc = read(fd, buf, len); + if(rc < len) + return EREAD_IMAGE_FAILED; + + close(fd); + + sum = MODEL_NUMBER; + + for(i = 0;i < len;i++) { + sum += buf[i]; + } + + printf("Sum: %x", sum); + + if(sum != chksum) + return EBAD_CHKSUM; + + return len; +} + +/* Load raw binary image. */ +int load_raw_firmware(unsigned char* buf, char* firmware, int buffer_size) +{ + int fd; + int rc; + int len; + char filename[MAX_PATH]; + + snprintf(filename,sizeof(filename),"%s",firmware); + fd = open(filename, O_RDONLY); + if(fd < 0) + { + return EFILE_NOT_FOUND; + } + + len = filesize(fd); + + if (len > buffer_size) + return EFILE_TOO_BIG; + + rc = read(fd, buf, len); + if(rc < len) + return EREAD_IMAGE_FAILED; + + close(fd); + return len; +} + +/* These functions are present in the firmware library, but we reimplement + them here because the originals do a lot more than we want */ +void reset_poweroff_timer(void) +{ +} + +int dbg_ports(void) +{ + return 0; +} + +void mpeg_stop(void) +{ +} + +void sys_poweroff(void) +{ +} |