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-rw-r--r--bootloader/ipod.c309
1 files changed, 69 insertions, 240 deletions
diff --git a/bootloader/ipod.c b/bootloader/ipod.c
index b1b3114ac9..73b4fffc71 100644
--- a/bootloader/ipod.c
+++ b/bootloader/ipod.c
@@ -39,16 +39,22 @@
#include "panic.h"
#include "power.h"
#include "file.h"
+#include "common.h"
#define XSC(X) #X
#define SC(X) XSC(X)
-#if (CONFIG_CPU == PP5020)
-#define DRAM_START 0x10000000
-#else
-#define IPOD_LCD_BASE 0xc0001000
-#define DRAM_START 0x28000000
-#endif
+/* Maximum allowed firmware image size. The largest known current
+ (December 2006) firmware is about 7.5MB (Apple's firmware for the ipod video)
+ so we set this to 8MB. */
+#define MAX_LOADSIZE (8*1024*1024)
+
+/* A buffer to load the Linux kernel or Rockbox into */
+unsigned char *loadbuffer = (unsigned char *)DRAM_START;
+
+/* Bootloader version */
+char version[] = APPSVERSION;
+
#define IPOD_HW_REVISION (*((volatile unsigned long*)(0x00002084)))
/* We copy the hardware revision to the last four bytes of SDRAM and then
@@ -61,17 +67,6 @@
#define BUTTON_PLAY 4
#define BUTTON_HOLD 5
-/* Size of the buffer to store the loaded Rockbox/Linux/AppleOS image */
-
-/* The largest known current (December 2006) firmware is about 7.5MB
- (Apple's firmware for the ipod video) so we set this to 8MB. */
-
-#define MAX_LOADSIZE (8*1024*1024)
-
-char version[] = APPSVERSION;
-
-int line=0;
-
#if CONFIG_KEYPAD == IPOD_4G_PAD && !defined(IPOD_MINI)
/* check if number of seconds has past */
int timer_check(int clock_start, unsigned int usecs)
@@ -157,54 +152,6 @@ int opto_keypad_read(void)
}
#endif
-char *strerror(int error)
-{
- switch(error)
- {
- case 0:
- return "OK";
- case -1:
- return "File not found";
- case -2:
- return "Read failed (chksum)";
- case -3:
- return "Read failed (model)";
- case -4:
- return "Read failed (image)";
- case -5:
- return "Bad checksum";
- case -6:
- return "File too big";
- default:
- return "Unknown";
- }
-}
-
-char printfbuf[256];
-
-void reset_screen(void)
-{
- lcd_clear_display();
- line = 0;
-}
-
-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;
-}
-
static int key_pressed(void)
{
unsigned char state;
@@ -240,101 +187,9 @@ bool button_hold(void)
return (GPIOA_INPUT_VAL & 0x20)?false:true;
}
-int load_rockbox(unsigned char* buf, char* firmware)
-{
- 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 -1;
- }
-
- len = filesize(fd) - 8;
-
- if (len > MAX_LOADSIZE)
- return -6;
-
- 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 -2;
-
- rc = read(fd, model, 4);
- if(rc < 4)
- return -3;
-
- model[4] = 0;
-
- printf("Model: %s", model);
- printf("Checksum: %x", chksum);
- printf("Loading %s", firmware);
-
- lseek(fd, FIRMWARE_OFFSET_FILE_DATA, SEEK_SET);
-
- rc = read(fd, buf, len);
- if(rc < len)
- return -4;
-
- close(fd);
-
- sum = MODEL_NUMBER;
-
- for(i = 0;i < len;i++) {
- sum += buf[i];
- }
-
- printf("Sum: %x", sum);
-
- if(sum != chksum)
- return -5;
-
- return len;
-}
-
-
-int load_linux(unsigned char* buf) {
- int fd;
- int rc;
- int len;
-
- fd=open("/linux.bin",O_RDONLY);
- if (fd < 0)
- return -1;
-
- len=filesize(fd);
- if (len > MAX_LOADSIZE)
- return -6;
-
- rc=read(fd,buf,len);
-
- if (rc < len)
- return -4;
-
- printf("Loaded Linux: %d bytes", len);
-
- return len;
-}
-
-
-/* A buffer to load the Linux kernel or Rockbox into */
-unsigned char loadbuffer[MAX_LOADSIZE];
-
void fatal_error(void)
{
+ extern int line;
bool holdstatus=false;
/* System font is 6 pixels wide */
@@ -423,7 +278,6 @@ void* main(void)
button_init();
#endif
- line=0;
lcd_setfont(FONT_SYSFIXED);
@@ -459,95 +313,74 @@ void* main(void)
printf("Partition 1: 0x%02x %ld MB",
pinfo->type, pinfo->size / 2048);
- /* See if there is an Apple firmware image in RAM */
- haveretailos = (memcmp((void*)(DRAM_START+0x20),"portalplayer",12)==0);
-
- /* We don't load Rockbox if the hold button is enabled. */
- if (!button_was_held) {
- /* Check for a keypress */
- i=key_pressed();
-
- if ((i!=BUTTON_MENU) && (i!=BUTTON_PLAY)) {
- printf("Loading Rockbox...");
- rc=load_rockbox(loadbuffer, BOOTFILE);
- if (rc < 0) {
- printf("Error!");
- printf("Can't load rockbox.ipod:");
- printf(strerror(rc));
- } else {
- printf("Rockbox loaded.");
- memcpy((void*)DRAM_START,loadbuffer,rc);
- return (void*)DRAM_START;
- }
- }
+
+ /* Check for a keypress */
+ i=key_pressed();
- if (i==BUTTON_PLAY) {
- printf("Loading Linux...");
- rc=load_linux(loadbuffer);
- if (rc < 0) {
- printf("Error!");
- printf("Can't load linux.bin:");
- printf(strerror(rc));
- } else {
- memcpy((void*)DRAM_START,loadbuffer,rc);
+ if (button_was_held || (i==BUTTON_MENU)) {
+ /* If either the hold switch was on, or the Menu button was held, then
+ try the Apple firmware */
+
+ printf("Loading original firmware...");
+
+ /* First try an apple_os.ipod file on the FAT32 partition
+ (either in .rockbox or the root)
+ */
+
+ rc=load_firmware(loadbuffer, "apple_os.ipod", MAX_LOADSIZE);
+
+ if(rc==EFILE_NOT_FOUND) {
+ /* If apple_os.ipod doesn't exist, then check if there is an Apple
+ firmware image in RAM */
+ haveretailos = (memcmp((void*)(DRAM_START+0x20),"portalplayer",12)==0);
+ if (haveretailos) {
+ /* We have a copy of the retailos in RAM, lets just run it. */
return (void*)DRAM_START;
}
+ } else if (rc < EFILE_NOT_FOUND) {
+ printf("Error!");
+ printf("Can't load apple_os.ipod:");
+ printf(strerror(rc));
+ } else if (rc > 0) {
+ printf("apple_os.ipod loaded.");
+ return (void*)DRAM_START;
+ }
+
+ /* Everything failed - just loop forever */
+ printf("No RetailOS detected");
+
+ } else if (i==BUTTON_PLAY) {
+ printf("Loading Linux...");
+ rc=load_raw_firmware(loadbuffer, "/linux.bin", MAX_LOADSIZE);
+ if (rc < EOK) {
+ printf("Error!");
+ printf("Can't load linux.bin:");
+ printf(strerror(rc));
+ } else {
+ return (void*)DRAM_START;
+ }
+ } else {
+ printf("Loading Rockbox...");
+ rc=load_firmware(loadbuffer, BOOTFILE, MAX_LOADSIZE);
+ if (rc < EOK) {
+ printf("Error!");
+ printf("Can't load rockbox.ipod:");
+ printf(strerror(rc));
+ } else {
+ printf("Rockbox loaded.");
+ return (void*)DRAM_START;
}
}
-
-
- /* If either the hold switch was on, or loading Rockbox/IPL
- failed, then try the Apple firmware */
-
- printf("Loading original firmware...");
-
- /* First try an apple_os.ipod file on the FAT32 partition
- (either in .rockbox or the root)
- */
-
- rc=load_rockbox(loadbuffer, "apple_os.ipod");
-
- /* Only report errors if the file was found */
- if (rc < -1) {
- printf("Error!");
- printf("Can't load apple_os.ipod:");
- printf(strerror(rc));
- } else if (rc > 0) {
- printf("apple_os.ipod loaded.");
- memcpy((void*)DRAM_START,loadbuffer,rc);
- return (void*)DRAM_START;
- }
-
- if (haveretailos) {
- /* We have a copy of the retailos in RAM, lets just run it. */
- return (void*)DRAM_START;
- }
-
- /* Everything failed - just loop forever */
- printf("No RetailOS detected");
-
+
+ /* If we get to here, then we haven't been able to load any firmware */
fatal_error();
-
+
/* We never get here, but keep gcc happy */
return (void*)0;
}
/* 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 usb_acknowledge(void)
{
}
@@ -555,7 +388,3 @@ void usb_acknowledge(void)
void usb_wait_for_disconnect(void)
{
}
-
-void sys_poweroff(void)
-{
-}
generated by cgit v1.2.3 (git 2.25.1) at 2022-08-13 06:56:16 +0000