Optional dual-boot support in iAudio X5 and M5 bootloader, based on FS#5289.
In order to enable it, #define HAVE_DUALBOOT when building the bootloader.
Do not use the automatically created x5_fw.bin or m5_fw.bin, but use mkboot
to create a new firmware file from an OF x5_fw.bin resp. m5_fw.bin and
bootloader.bin.
The dual-boot bootloader boots the OF when pressing Play (main or remote) for
more than 3 seconds. Hold it a bit longer because the OF also checks buttons.
Short press boots rockbox.
As a bonus, the Play button read (for hold check) is done a bit earlier for
single-boot mode as well.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30018 a1c6a512-1295-4272-9138-f99709370657
diff --git a/bootloader/bootloader.make b/bootloader/bootloader.make
index 0118235..78b8b43 100644
--- a/bootloader/bootloader.make
+++ b/bootloader/bootloader.make
@@ -10,6 +10,7 @@
INCLUDES += -I$(APPSDIR)
SRC += $(call preprocess, $(APPSDIR)/SOURCES)
+CONFIGFILE := $(FIRMDIR)/export/config/$(MODELNAME).h
BOOTLDS := $(FIRMDIR)/target/$(CPU)/$(MANUFACTURER)/boot.lds
BOOTLINK := $(BUILDDIR)/boot.link
@@ -17,7 +18,7 @@
.SECONDEXPANSION:
-$(BOOTLINK): $(BOOTLDS)
+$(BOOTLINK): $(BOOTLDS) $(CONFIGFILE)
$(call PRINTS,PP $(@F))
$(call preprocess2file,$<,$@,-DLOADADDRESS=$(LOADADDRESS))
diff --git a/bootloader/iaudio_coldfire.c b/bootloader/iaudio_coldfire.c
index 5639a0e..9c829c4 100644
--- a/bootloader/iaudio_coldfire.c
+++ b/bootloader/iaudio_coldfire.c
@@ -123,6 +123,10 @@
}
}
+#if defined(IAUDIO_M5) || defined(IAUDIO_X5)
+int initial_gpio_read;
+#endif
+
void main(void)
{
int i;
@@ -144,17 +148,13 @@
if ((GPIO_READ & 0x80000000) == 0)
rc_on_button = true;
#elif defined(IAUDIO_M5) || defined(IAUDIO_X5)
- int data;
-
or_l(0x0e000000, &GPIO_FUNCTION); /* main Hold & Power, remote Play */
and_l(~0x0e000000, &GPIO_ENABLE);
-
- data = GPIO_READ;
-
- if ((data & 0x04000000) == 0)
+
+ if ((initial_gpio_read & 0x04000000) == 0)
on_button = true;
-
- if ((data & 0x02000000) == 0)
+
+ if ((initial_gpio_read & 0x02000000) == 0)
rc_on_button = true;
#endif
diff --git a/firmware/target/coldfire/crt0.S b/firmware/target/coldfire/crt0.S
index e671771..881fcf9 100644
--- a/firmware/target/coldfire/crt0.S
+++ b/firmware/target/coldfire/crt0.S
@@ -26,11 +26,51 @@
.global start
start:
+#if defined(BOOTLOADER) && defined(HAVE_DUALBOOT) \
+ && (defined(IAUDIO_X5) || defined(IAUDIO_M5))
+
+ /* 8 byte dualboot signature */
+ bra.b 1f /* 0x6006 */
+ .short 0x4442 /* DB */
+#if defined(IAUDIO_X5)
+ .long 0x69617835 /* iax5 */
+#elif defined(IAUDIO_M5)
+ .long 0x69616d35 /* iam5 */
+#else
+#error Dualboot signature not defined
+#endif
+1:
+ /* As the control registers are write-only, we're relying on MBAR2 being */
+ /* set up correctly by the preloader for button check */
+ /* Only use scratch regs until we're sure that we will boot rockbox */
+ lea MBAR2, %a1
+ move.l (%a1), %a0 /* store GPIO_READ result for button check in main() */
+
+ /* Wait ~3 seconds for ON-button release. We need roughly 300ns per
+ iteration, so we check 10000000 times to reach the desired delay */
+ move.l #10000000, %d0
+.on_button_test:
+ move.l (%a1), %d1 /* GPIO_READ */
+ and.l #0x06000000, %d1 /* Check main (bit 25=0) and remote (bit 26=0) */
+ cmp.l #0x06000000, %d1 /* ON buttons simultaneously */
+ beq.b .loadrockbox
+ subq.l #1, %d0
+ bne.b .on_button_test
+
+.loadoriginal:
+ jmp 0x10010
+
+.loadrockbox:
+ move.l %a0, %d7 /* keep initial GPIO_READ value in %d7 for now */
+
+#endif /* defined(BOOTLOADER && defined(HAVE_DUALBOOT)
+ && (defined(IAUDIO_X5) || defined(IAUDIO_M5)) */
+
move.w #0x2700,%sr
move.l #vectors,%d0
movec.l %d0,%vbr
-
+
move.l #MBAR+1,%d0
movec.l %d0,%mbar
@@ -39,7 +79,12 @@
lea MBAR,%a0
lea MBAR2,%a1
-
+
+#if defined(BOOTLOADER) && !defined(HAVE_DUALBOOT) \
+ && (defined(IAUDIO_X5) || defined(IAUDIO_M5))
+ move.l (%a1), %d7 /* store GPIO_READ result for button check in main() */
+#endif
+
clr.l (0x180,%a1) /* PLLCR = 0 */
/* 64K DMA-capable SRAM at 0x10000000
@@ -318,6 +363,10 @@
move.l %d0,(%a2)+
cmp.l %a2,%a4
bhi.b .mungeloop
+
+#if defined(BOOTLOADER) && (defined(IAUDIO_X5) || defined(IAUDIO_M5))
+ move.l %d7, initial_gpio_read
+#endif
jsr main
.hoo:
diff --git a/firmware/target/coldfire/iaudio/boot.lds b/firmware/target/coldfire/iaudio/boot.lds
index 4cd0e8e..9288a6c 100644
--- a/firmware/target/coldfire/iaudio/boot.lds
+++ b/firmware/target/coldfire/iaudio/boot.lds
@@ -14,8 +14,12 @@
#define IRAMSIZE 0x18000
#endif
#define DRAMORIG 0x31000000
+#ifdef HAVE_DUALBOOT
+#define FLASHORIG 0x00150000
+#else
#define FLASHORIG 0x00010000
-#define FLASHSIZE 4M
+#endif
+#define FLASHSIZE 4M - FLASHORIG
MEMORY
{
diff --git a/rbutil/rbutilqt/base/bootloaderinstallhex.cpp b/rbutil/rbutilqt/base/bootloaderinstallhex.cpp
index 84d60ed..5118aab 100644
--- a/rbutil/rbutilqt/base/bootloaderinstallhex.cpp
+++ b/rbutil/rbutilqt/base/bootloaderinstallhex.cpp
@@ -162,7 +162,7 @@
// iriver decode already done in stage 1
int result;
- if((result = mkboot(descrambledName.toLocal8Bit().constData(),
+ if((result = mkboot_iriver(descrambledName.toLocal8Bit().constData(),
tempfileName.toLocal8Bit().constData(),
tempbinName.toLocal8Bit().constData(), origin)) < 0)
{
diff --git a/tools/mkboot.c b/tools/mkboot.c
index 49d6452..f7c7b46 100644
--- a/tools/mkboot.c
+++ b/tools/mkboot.c
@@ -26,42 +26,46 @@
#ifndef RBUTIL
static void usage(void)
{
- printf("usage: mkboot [-h300] <firmware file> <boot file> <output file>\n");
+ printf("usage: mkboot <target> <firmware file> <boot file> <output file>\n");
+ printf("available targets:\n"
+ "\t-h100 Iriver H1x0\n"
+ "\t-h300 Iriver H3x0\n"
+ "\t-iax5 iAudio X5\n"
+ "\t-iam5 iAudio M5\n");
exit(1);
}
#endif
-static unsigned char image[0x400000 + 0x220 + 0x400000/0x200];
-
#ifndef RBUTIL
int main(int argc, char *argv[])
{
- char *infile, *bootfile, *outfile;
- int origin = 0x1f0000; /* H1x0 bootloader address */
-
- if(argc < 3) {
- usage();
- }
-
- if(!strcmp(argv[1], "-h300")) {
- infile = argv[2];
- bootfile = argv[3];
- outfile = argv[4];
-
- origin = 0x3f0000; /* H3x0 bootloader address */
- }
- else
+ if(argc != 5)
{
- infile = argv[1];
- bootfile = argv[2];
- outfile = argv[3];
+ usage();
+ return 1;
}
- return mkboot(infile, bootfile, outfile, origin);
+
+ if ( ! strcmp(argv[1], "-h100"))
+ return mkboot_iriver(argv[2], argv[3], argv[4], 0x1f0000);
+
+ if ( ! strcmp(argv[1], "-h300"))
+ return mkboot_iriver(argv[2], argv[3], argv[4], 0x3f0000);
+
+ if ( ! strcmp(argv[1], "-iax5"))
+ return mkboot_iaudio(argv[2], argv[3], argv[4], 0);
+
+ if ( ! strcmp(argv[1], "-iam5"))
+ return mkboot_iaudio(argv[2], argv[3], argv[4], 1);
+
+ usage();
+ return 1;
}
#endif
-int mkboot(const char* infile, const char* bootfile, const char* outfile, int origin)
+static unsigned char image[0x400000 + 0x220 + 0x400000/0x200];
+
+int mkboot_iriver(const char* infile, const char* bootfile, const char* outfile, int origin)
{
FILE *f;
int i;
@@ -187,3 +191,129 @@
return 0;
}
+
+/* iAudio firmware update file header size */
+#define HEADER_SIZE 0x1030
+/* Address of flash contents that get overwritten by a firmware update.
+ * Contents before this address contain the preloader and are not affected
+ * by a firmware update.
+ * -> Firmware update file contents starting at offset HEADER_SIZE end up
+ * in flash at address FLASH_START
+ */
+#define FLASH_START 0x00010000
+/* Start of unused space in original firmware (flash address, not file
+ * offset!) where we patch in the Rockbox loader */
+#define ROCKBOX_BOOTLOADER 0x00150000
+/* End of unused space in original firmware */
+#define BOOTLOADER_LIMIT 0x00170000
+
+/* Patch the Rockbox bootloader into free space in the original firmware
+ * (starting at 0x150000). The preloader starts execution of the OF at
+ * 0x10000 which normally contains a jsr 0x10010. We also patch this to
+ * do a jsr 0x150000 to the Rockbox dual boot loader instead. If it then
+ * decides to start the OF instead of Rockbox, it simply does a jmp
+ * 0x10010 instead of loading Rockbox from disk.
+ */
+int mkboot_iaudio(const char* infile, const char* bootfile, const char* outfile, int model_nr)
+{
+ size_t flength, blength;
+ unsigned char *bbuf, *fbuf, *p;
+ const unsigned char fsig[] = {
+ 0x4e, 0xb9, 0x00, 0x01, 0x00, 0x10 }; /* jsr 0x10010 */
+ unsigned char bsig[2][8] = {
+ /* dualboot signatures */
+ { 0x60, 0x06, 0x44, 0x42, 0x69, 0x61, 0x78, 0x35 }, /* X5 */
+ { 0x60, 0x06, 0x44, 0x42, 0x69, 0x61, 0x6d, 0x35 }, /* M5 */ };
+ FILE *ffile, *bfile, *ofile;
+ unsigned char sum = 0;
+ int i;
+
+ /* read input files */
+ if ((bfile = fopen(bootfile, "rb")) == NULL) {
+ perror("Cannot open Rockbox bootloader file.\n");
+ return 1;
+ }
+
+ fseek(bfile, 0, SEEK_END);
+ blength = ftell(bfile);
+ fseek(bfile, 0, SEEK_SET);
+
+ if (blength + ROCKBOX_BOOTLOADER >= BOOTLOADER_LIMIT) {
+ fprintf(stderr, "Rockbox bootloader is too big.\n");
+ return 1;
+ }
+
+ if ((ffile = fopen(infile, "rb")) == NULL) {
+ perror("Cannot open original firmware file.");
+ return 1;
+ }
+
+ fseek(ffile, 0, SEEK_END);
+ flength = ftell(ffile);
+ fseek(ffile, 0, SEEK_SET);
+
+ bbuf = malloc(blength);
+ fbuf = malloc(flength);
+
+ if (!bbuf || !fbuf) {
+ fprintf(stderr, "Out of memory.\n");
+ return 1;
+ }
+
+ if ( fread(bbuf, 1, blength, bfile) < blength
+ || fread(fbuf, 1, flength, ffile) < flength) {
+ fprintf(stderr, "Read error.\n");
+ return 1;
+ }
+ fclose(bfile);
+ fclose(ffile);
+
+ /* verify format of input files */
+ if (blength < 0x10 || memcmp(bbuf, bsig[model_nr], sizeof(bsig[0]))) {
+ fprintf(stderr, "Rockbox bootloader format error (is it bootloader.bin?).\n");
+ return 1;
+ }
+ if (flength < HEADER_SIZE-FLASH_START+BOOTLOADER_LIMIT
+ || memcmp(fbuf+HEADER_SIZE, fsig, sizeof(fsig))) {
+ fprintf(stderr, "Original firmware format error.\n");
+ return 1;
+ }
+
+ /* verify firmware is not overrun */
+ for (i = ROCKBOX_BOOTLOADER; i < BOOTLOADER_LIMIT; i++) {
+ if (fbuf[HEADER_SIZE-FLASH_START+i] != 0xff) {
+ fprintf(stderr, "Original firmware has grown too much.\n");
+ return 1;
+ }
+ }
+
+ /* change jsr 0x10010 to jsr DUAL_BOOTLOADER */
+ p = fbuf + HEADER_SIZE + 2;
+ *p++ = (ROCKBOX_BOOTLOADER >> 24) & 0xff;
+ *p++ = (ROCKBOX_BOOTLOADER >> 16) & 0xff;
+ *p++ = (ROCKBOX_BOOTLOADER >> 8) & 0xff;
+ *p++ = (ROCKBOX_BOOTLOADER ) & 0xff;
+
+ p = fbuf + HEADER_SIZE + ROCKBOX_BOOTLOADER - FLASH_START;
+ memcpy(p, bbuf, blength);
+
+ /* recalc checksum */
+ for (i = HEADER_SIZE; (size_t)i < flength; i++)
+ sum += fbuf[i];
+ fbuf[0x102b] = sum;
+
+ /* write output */
+ if ((ofile = fopen(outfile, "wb")) == NULL) {
+ perror("Cannot open output file");
+ return 1;
+ }
+ if (fwrite(fbuf, 1, flength, ofile) < flength) {
+ fprintf(stderr, "Write error.\n");
+ return 1;
+ }
+ fclose(ofile);
+ free(bbuf);
+ free(fbuf);
+
+ return 0;
+}
\ No newline at end of file
diff --git a/tools/mkboot.h b/tools/mkboot.h
index 980e469..ba12d1b 100644
--- a/tools/mkboot.h
+++ b/tools/mkboot.h
@@ -26,7 +26,8 @@
extern "C" {
#endif
-int mkboot(const char* infile, const char* bootfile, const char* outfile, int origin);
+int mkboot_iriver(const char* infile, const char* bootfile, const char* outfile, int origin);
+int mkboot_iaudio(const char* infile, const char* bootfile, const char* outfile, int model_nr);
#ifdef __cplusplus
}