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-rw-r--r--rbutil/mkzenboot/dualboot/Makefile50
-rw-r--r--rbutil/mkzenboot/dualboot/bin2c.c140
-rw-r--r--rbutil/mkzenboot/dualboot/config.h22
-rw-r--r--rbutil/mkzenboot/dualboot/dualboot.c134
-rw-r--r--rbutil/mkzenboot/dualboot/dualboot.lds32
5 files changed, 378 insertions, 0 deletions
diff --git a/rbutil/mkzenboot/dualboot/Makefile b/rbutil/mkzenboot/dualboot/Makefile
new file mode 100644
index 0000000000..cc8c604f6e
--- /dev/null
+++ b/rbutil/mkzenboot/dualboot/Makefile
@@ -0,0 +1,50 @@
+CC=gcc
+LD=ld
+OC=objcopy
+CROSS_PREFIX=arm-elf-eabi-
+REGS_PATH=../../../firmware/target/arm/imx233/regs
+CFLAGS=-mcpu=arm926ej-s -std=gnu99 -I. -I$(REGS_PATH) -nostdlib -ffreestanding -fomit-frame-pointer -O
+LDFLAGS=
+# Edit the following variables when adding a new target.
+# mkimxboot.c also needs to be edited to refer to these
+# To add a new target x you need to:
+# 1) add x to the list in TARGETS
+# 2) create a variable named OPT_x of the form:
+# OPT_x=target specific defines
+TARGETS=zenmozaic zenxfi zen
+OPT_zenmozaic=-DCREATIVE_ZENMOZAIC -DIMX233_SUBTARGET=3700
+OPT_zenxfi=-DCREATIVE_ZENXFI -DIMX233_SUBTARGET=3700
+OPT_zen=-DCREATIVE_ZEN -DIMX233_SUBTARGET=3700
+
+BOOTLDS=$(patsubst %, dualboot_%.lds, $(TARGETS))
+BOOTOBJS=$(patsubst %, dualboot_%.o, $(TARGETS))
+BOOTBINS=$(patsubst %, dualboot_%.arm-bin, $(TARGETS))
+BOOTELFS=$(patsubst %, dualboot_%.arm-elf, $(TARGETS))
+
+all: ../dualboot.h ../dualboot.c $(BOOTELFS)
+
+# Dualboot bootloaders
+
+dualboot_%.o: dualboot.c
+ $(CROSS_PREFIX)$(CC) $(CFLAGS) $(OPT_$(@:dualboot_%.o=%)) -c -o $@ $^
+
+dualboot_%.lds: dualboot.lds
+ $(CROSS_PREFIX)$(CC) $(CFLAGS) $(OPT_$(@:dualboot_%.lds=%)) -E -x c - < $< | sed '/#/d' > $@
+
+dualboot_%.arm-elf: dualboot_%.o dualboot_%.lds
+ $(CROSS_PREFIX)$(LD) $(LDFLAGS) -T$(@:dualboot_%.arm-elf=dualboot_%.lds) -o $@ $<
+
+# Rules for the ARM code embedded in mkamsboot - assemble, link, then extract
+# the binary code and finally convert to .h for building in mkamsboot
+
+%.arm-bin: %.arm-elf
+ $(CROSS_PREFIX)$(OC) -O binary $< $@
+
+../dualboot.c ../dualboot.h: $(BOOTBINS) bin2c
+ ./bin2c ../dualboot $(BOOTBINS)
+
+bin2c: bin2c.c
+ $(CC) -o bin2c bin2c.c
+
+clean:
+ rm -f *~ bin2c $(BOOTBINS) $(BOOTOBJS) $(BOOTELFS) $(BOOTLDS)
diff --git a/rbutil/mkzenboot/dualboot/bin2c.c b/rbutil/mkzenboot/dualboot/bin2c.c
new file mode 100644
index 0000000000..b02af88a4d
--- /dev/null
+++ b/rbutil/mkzenboot/dualboot/bin2c.c
@@ -0,0 +1,140 @@
+/***************************************************************************
+ * __________ __ ___.
+ * Open \______ \ ____ ____ | | _\_ |__ _______ ___
+ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
+ * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
+ * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
+ * \/ \/ \/ \/ \/
+ * $Id$
+ *
+ * Copyright (C) 2007 Dave Chapman
+ *
+ * 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include <stdio.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <libgen.h>
+
+#ifndef O_BINARY
+#define O_BINARY 0
+#endif
+
+static off_t filesize(int fd)
+{
+ struct stat buf;
+
+ fstat(fd,&buf);
+ return buf.st_size;
+}
+
+static void write_cfile(const unsigned char* buf, off_t len, FILE* fp, const char *name)
+{
+ int i;
+
+ fprintf(fp,"unsigned char %s[%ld] = {",name,len);
+
+ for (i=0;i<len;i++) {
+ if ((i % 16) == 0) {
+ fprintf(fp,"\n ");
+ }
+ if (i == (len-1)) {
+ fprintf(fp,"0x%02x",buf[i]);
+ } else if ((i % 16) == 15) {
+ fprintf(fp,"0x%02x,",buf[i]);
+ } else {
+ fprintf(fp,"0x%02x, ",buf[i]);
+ }
+ }
+ fprintf(fp,"\n};\n");
+}
+
+int main (int argc, char* argv[])
+{
+ char* cname;
+ int i;
+ FILE *cfile, *hfile;
+ char cfilename[256], hfilename[256];
+
+ if (argc < 3) {
+ fprintf(stderr,"Usage: bin2c cname file1 [file2 [file3 ...]]\n");
+ return 1;
+ }
+
+ cname=argv[1];
+
+ snprintf(cfilename,256,"%s.c",cname);
+ cfile = fopen(cfilename,"w+");
+ if (cfile == NULL) {
+ fprintf(stderr,"Couldn't open %s\n",cfilename);
+ return 2;
+ }
+
+ snprintf(hfilename,256,"%s.h",cname);
+ hfile = fopen(hfilename,"w+");
+ if (hfile == NULL) {
+ fprintf(stderr,"Couldn't open %s\n",hfilename);
+ fclose(cfile);
+ return 3;
+ }
+
+ fprintf(cfile,"/* Generated by bin2c */\n\n");
+ fprintf(cfile,"#include \"%s\"\n\n", basename(hfilename));
+ fprintf(hfile,"/* Generated by bin2c */\n\n");
+
+ for(i=0; i < argc - 2; i++) {
+ unsigned char* buf;
+ off_t len;
+ off_t orig_len;
+ char *ext;
+ char *array = argv[2+i];
+
+ int fd = open(array,O_RDONLY|O_BINARY);
+ if (fd < 0) {
+ fprintf(stderr,"Can not open %s\n",argv[2+i]);
+ fclose(cfile);
+ fclose(hfile);
+ return 4;
+ }
+
+ orig_len = filesize(fd);
+ /* pad to 32bit */
+ len = (orig_len + 3) & ~3;
+
+ buf = malloc(len);
+ if (read(fd,buf,orig_len) < orig_len) {
+ fprintf(stderr,"Short read, aborting\n");
+ return 5;
+ }
+
+ /* pad to 32bit with zeros */
+ if (len > orig_len)
+ memset(buf+orig_len, 0, len-orig_len);
+
+ /* remove file extension */
+ ext = strchr (array, '.');
+ if (ext != NULL)
+ *ext = '\0';
+ write_cfile (buf, len, cfile, array);
+ fprintf(hfile,"extern unsigned char %s[%ld];\n",array,len);
+
+ close(fd);
+ }
+
+ fclose(cfile);
+ fclose(hfile);
+
+ return 0;
+}
diff --git a/rbutil/mkzenboot/dualboot/config.h b/rbutil/mkzenboot/dualboot/config.h
new file mode 100644
index 0000000000..ff59cee710
--- /dev/null
+++ b/rbutil/mkzenboot/dualboot/config.h
@@ -0,0 +1,22 @@
+/***************************************************************************
+ * __________ __ ___.
+ * Open \______ \ ____ ____ | | _\_ |__ _______ ___
+ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
+ * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
+ * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
+ * \/ \/ \/ \/ \/
+ * $Id$
+ *
+ * Copyright (C) 2013 by Amaury Pouly
+ *
+ * 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+/** empty, used by register files */
diff --git a/rbutil/mkzenboot/dualboot/dualboot.c b/rbutil/mkzenboot/dualboot/dualboot.c
new file mode 100644
index 0000000000..d0587fa65d
--- /dev/null
+++ b/rbutil/mkzenboot/dualboot/dualboot.c
@@ -0,0 +1,134 @@
+/***************************************************************************
+ * __________ __ ___.
+ * Open \______ \ ____ ____ | | _\_ |__ _______ ___
+ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
+ * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
+ * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
+ * \/ \/ \/ \/ \/
+ * $Id$
+ *
+ * Copyright (C) 2013 by Amaury Pouly
+ *
+ * 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#include "regs-pinctrl.h"
+#include "regs-power.h"
+#include "regs-lradc.h"
+
+typedef unsigned long uint32_t;
+
+// target specific boot decision
+enum boot_t
+{
+ BOOT_STOP, /* power down */
+ BOOT_ROCK, /* boot to Rockbox */
+ BOOT_OF, /* boot to OF */
+};
+
+/**
+ * Helper functions
+ */
+
+static inline int __attribute__((always_inline)) read_gpio(int bank, int pin)
+{
+ return (HW_PINCTRL_DINn(bank) >> pin) & 1;
+}
+
+static inline int __attribute__((always_inline)) read_pswitch(void)
+{
+#if IMX233_SUBTARGET >= 3700
+ return BF_RD(POWER_STS, PSWITCH);
+#else
+ return BF_RD(DIGCTL_STATUS, PSWITCH);
+#endif
+}
+
+/* only works for channels <=7, always divide by 2, never accumulates */
+static inline void __attribute__((always_inline)) setup_lradc(int src)
+{
+ BF_CLR(LRADC_CTRL0, SFTRST);
+ BF_CLR(LRADC_CTRL0, CLKGATE);
+ /* don't bother changing the source, we are early enough at boot so that
+ * channel x is mapped to source x */
+ HW_LRADC_CHn_CLR(src) = BM_OR2(LRADC_CHn, NUM_SAMPLES, ACCUMULATE);
+ BF_SETV(LRADC_CTRL2, DIVIDE_BY_TWO, 1 << src);
+}
+
+#define BP_LRADC_CTRL1_LRADCx_IRQ(x) (x)
+#define BM_LRADC_CTRL1_LRADCx_IRQ(x) (1 << (x))
+
+static inline int __attribute__((always_inline)) read_lradc(int src)
+{
+ BF_CLR(LRADC_CTRL1, LRADCx_IRQ(src));
+ BF_SETV(LRADC_CTRL0, SCHEDULE, 1 << src);
+ while(!BF_RD(LRADC_CTRL1, LRADCx_IRQ(src)));
+ return BF_RDn(LRADC_CHn, src, VALUE);
+}
+
+static inline void __attribute__((noreturn)) power_down()
+{
+ /* power down */
+ HW_POWER_RESET = BM_OR2(POWER_RESET, UNLOCK, PWD);
+ while(1);
+}
+
+/**
+ * Boot decision functions
+ */
+
+#if defined(CREATIVE_ZENMOZAIC) || defined(CREATIVE_ZEN) || defined(CREATIVE_ZENXFI)
+static enum boot_t boot_decision()
+{
+ setup_lradc(0); // setup LRADC channel 0 to read keys
+ /* make a decision */
+ /* read keys */
+ int val = read_lradc(0);
+ /* if back is pressed, boot to OF
+ * otherwise boot to RB */
+ if(val >= 2650 && val < 2750) // conveniently, all players use the same value
+ return BOOT_OF;
+ return BOOT_ROCK;
+}
+#else
+#warning You should define a target specific boot decision function
+static int boot_decision()
+{
+ return BOOT_ROCK;
+}
+#endif
+
+static int main(uint32_t rb_addr, uint32_t of_addr)
+{
+ switch(boot_decision())
+ {
+ case BOOT_ROCK:
+ return rb_addr;
+ case BOOT_OF:
+ /* fix back the loading address
+ /* NOTE: see mkzenboot for more details */
+ *(uint32_t *)0x20 = of_addr;
+ return 0;
+ case BOOT_STOP:
+ default:
+ power_down();
+ }
+}
+
+/** Glue for the linker mostly */
+
+extern uint32_t of_vector;
+extern uint32_t rb_vector;
+extern uint32_t boot_arg;
+
+void __attribute__((section(".start"))) start()
+{
+ uint32_t addr = main(rb_vector, of_vector);
+ ((void (*)(uint32_t))addr)(boot_arg);
+}
diff --git a/rbutil/mkzenboot/dualboot/dualboot.lds b/rbutil/mkzenboot/dualboot/dualboot.lds
new file mode 100644
index 0000000000..7444a1e427
--- /dev/null
+++ b/rbutil/mkzenboot/dualboot/dualboot.lds
@@ -0,0 +1,32 @@
+ENTRY(start)
+OUTPUT_FORMAT(elf32-littlearm)
+OUTPUT_ARCH(arm)
+
+MEMORY
+{
+ /* keep this consistent with the address in mkzenboot.c */
+#if IMX233_SUBTARGET == 3700
+ RAM : ORIGIN = 0x41000000, LENGTH = 0x8000
+#elif IMX233_SUBTARGET == 3600
+ RAM : ORIGIN = 0x61000000, LENGTH = 0x8000
+#else
+#error define me
+#endif
+}
+
+SECTIONS
+{
+ .text :
+ {
+ *(.start*)
+ *(.text*)
+ . = ALIGN(4);
+ LONG(0x1ceb00da)
+ of_vector = .;
+ . += 4;
+ rb_vector = .;
+ . += 4;
+ boot_arg = .;
+ . += 4;
+ } > RAM
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 13:41:06 +0000