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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 @@
1CC=gcc
2LD=ld
3OC=objcopy
4CROSS_PREFIX=arm-elf-eabi-
5REGS_PATH=../../../firmware/target/arm/imx233/regs
6CFLAGS=-mcpu=arm926ej-s -std=gnu99 -I. -I$(REGS_PATH) -nostdlib -ffreestanding -fomit-frame-pointer -O
7LDFLAGS=
8# Edit the following variables when adding a new target.
9# mkimxboot.c also needs to be edited to refer to these
10# To add a new target x you need to:
11# 1) add x to the list in TARGETS
12# 2) create a variable named OPT_x of the form:
13# OPT_x=target specific defines
14TARGETS=zenmozaic zenxfi zen
15OPT_zenmozaic=-DCREATIVE_ZENMOZAIC -DIMX233_SUBTARGET=3700
16OPT_zenxfi=-DCREATIVE_ZENXFI -DIMX233_SUBTARGET=3700
17OPT_zen=-DCREATIVE_ZEN -DIMX233_SUBTARGET=3700
18
19BOOTLDS=$(patsubst %, dualboot_%.lds, $(TARGETS))
20BOOTOBJS=$(patsubst %, dualboot_%.o, $(TARGETS))
21BOOTBINS=$(patsubst %, dualboot_%.arm-bin, $(TARGETS))
22BOOTELFS=$(patsubst %, dualboot_%.arm-elf, $(TARGETS))
23
24all: ../dualboot.h ../dualboot.c $(BOOTELFS)
25
26# Dualboot bootloaders
27
28dualboot_%.o: dualboot.c
29 $(CROSS_PREFIX)$(CC) $(CFLAGS) $(OPT_$(@:dualboot_%.o=%)) -c -o $@ $^
30
31dualboot_%.lds: dualboot.lds
32 $(CROSS_PREFIX)$(CC) $(CFLAGS) $(OPT_$(@:dualboot_%.lds=%)) -E -x c - < $< | sed '/#/d' > $@
33
34dualboot_%.arm-elf: dualboot_%.o dualboot_%.lds
35 $(CROSS_PREFIX)$(LD) $(LDFLAGS) -T$(@:dualboot_%.arm-elf=dualboot_%.lds) -o $@ $<
36
37# Rules for the ARM code embedded in mkamsboot - assemble, link, then extract
38# the binary code and finally convert to .h for building in mkamsboot
39
40%.arm-bin: %.arm-elf
41 $(CROSS_PREFIX)$(OC) -O binary $< $@
42
43../dualboot.c ../dualboot.h: $(BOOTBINS) bin2c
44 ./bin2c ../dualboot $(BOOTBINS)
45
46bin2c: bin2c.c
47 $(CC) -o bin2c bin2c.c
48
49clean:
50 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 @@
1/***************************************************************************
2 * __________ __ ___.
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
7 * \/ \/ \/ \/ \/
8 * $Id$
9 *
10 * Copyright (C) 2007 Dave Chapman
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
16 *
17 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
18 * KIND, either express or implied.
19 *
20 ****************************************************************************/
21
22#include <stdio.h>
23#include <string.h>
24#include <sys/types.h>
25#include <sys/stat.h>
26#include <unistd.h>
27#include <fcntl.h>
28#include <stdlib.h>
29#include <libgen.h>
30
31#ifndef O_BINARY
32#define O_BINARY 0
33#endif
34
35static off_t filesize(int fd)
36{
37 struct stat buf;
38
39 fstat(fd,&buf);
40 return buf.st_size;
41}
42
43static void write_cfile(const unsigned char* buf, off_t len, FILE* fp, const char *name)
44{
45 int i;
46
47 fprintf(fp,"unsigned char %s[%ld] = {",name,len);
48
49 for (i=0;i<len;i++) {
50 if ((i % 16) == 0) {
51 fprintf(fp,"\n ");
52 }
53 if (i == (len-1)) {
54 fprintf(fp,"0x%02x",buf[i]);
55 } else if ((i % 16) == 15) {
56 fprintf(fp,"0x%02x,",buf[i]);
57 } else {
58 fprintf(fp,"0x%02x, ",buf[i]);
59 }
60 }
61 fprintf(fp,"\n};\n");
62}
63
64int main (int argc, char* argv[])
65{
66 char* cname;
67 int i;
68 FILE *cfile, *hfile;
69 char cfilename[256], hfilename[256];
70
71 if (argc < 3) {
72 fprintf(stderr,"Usage: bin2c cname file1 [file2 [file3 ...]]\n");
73 return 1;
74 }
75
76 cname=argv[1];
77
78 snprintf(cfilename,256,"%s.c",cname);
79 cfile = fopen(cfilename,"w+");
80 if (cfile == NULL) {
81 fprintf(stderr,"Couldn't open %s\n",cfilename);
82 return 2;
83 }
84
85 snprintf(hfilename,256,"%s.h",cname);
86 hfile = fopen(hfilename,"w+");
87 if (hfile == NULL) {
88 fprintf(stderr,"Couldn't open %s\n",hfilename);
89 fclose(cfile);
90 return 3;
91 }
92
93 fprintf(cfile,"/* Generated by bin2c */\n\n");
94 fprintf(cfile,"#include \"%s\"\n\n", basename(hfilename));
95 fprintf(hfile,"/* Generated by bin2c */\n\n");
96
97 for(i=0; i < argc - 2; i++) {
98 unsigned char* buf;
99 off_t len;
100 off_t orig_len;
101 char *ext;
102 char *array = argv[2+i];
103
104 int fd = open(array,O_RDONLY|O_BINARY);
105 if (fd < 0) {
106 fprintf(stderr,"Can not open %s\n",argv[2+i]);
107 fclose(cfile);
108 fclose(hfile);
109 return 4;
110 }
111
112 orig_len = filesize(fd);
113 /* pad to 32bit */
114 len = (orig_len + 3) & ~3;
115
116 buf = malloc(len);
117 if (read(fd,buf,orig_len) < orig_len) {
118 fprintf(stderr,"Short read, aborting\n");
119 return 5;
120 }
121
122 /* pad to 32bit with zeros */
123 if (len > orig_len)
124 memset(buf+orig_len, 0, len-orig_len);
125
126 /* remove file extension */
127 ext = strchr (array, '.');
128 if (ext != NULL)
129 *ext = '\0';
130 write_cfile (buf, len, cfile, array);
131 fprintf(hfile,"extern unsigned char %s[%ld];\n",array,len);
132
133 close(fd);
134 }
135
136 fclose(cfile);
137 fclose(hfile);
138
139 return 0;
140}
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 @@
1/***************************************************************************
2 * __________ __ ___.
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
7 * \/ \/ \/ \/ \/
8 * $Id$
9 *
10 * Copyright (C) 2013 by Amaury Pouly
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
16 *
17 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
18 * KIND, either express or implied.
19 *
20 ****************************************************************************/
21
22/** 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 @@
1/***************************************************************************
2 * __________ __ ___.
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
7 * \/ \/ \/ \/ \/
8 * $Id$
9 *
10 * Copyright (C) 2013 by Amaury Pouly
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
16 *
17 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
18 * KIND, either express or implied.
19 *
20 ****************************************************************************/
21#include "regs-pinctrl.h"
22#include "regs-power.h"
23#include "regs-lradc.h"
24
25typedef unsigned long uint32_t;
26
27// target specific boot decision
28enum boot_t
29{
30 BOOT_STOP, /* power down */
31 BOOT_ROCK, /* boot to Rockbox */
32 BOOT_OF, /* boot to OF */
33};
34
35/**
36 * Helper functions
37 */
38
39static inline int __attribute__((always_inline)) read_gpio(int bank, int pin)
40{
41 return (HW_PINCTRL_DINn(bank) >> pin) & 1;
42}
43
44static inline int __attribute__((always_inline)) read_pswitch(void)
45{
46#if IMX233_SUBTARGET >= 3700
47 return BF_RD(POWER_STS, PSWITCH);
48#else
49 return BF_RD(DIGCTL_STATUS, PSWITCH);
50#endif
51}
52
53/* only works for channels <=7, always divide by 2, never accumulates */
54static inline void __attribute__((always_inline)) setup_lradc(int src)
55{
56 BF_CLR(LRADC_CTRL0, SFTRST);
57 BF_CLR(LRADC_CTRL0, CLKGATE);
58 /* don't bother changing the source, we are early enough at boot so that
59 * channel x is mapped to source x */
60 HW_LRADC_CHn_CLR(src) = BM_OR2(LRADC_CHn, NUM_SAMPLES, ACCUMULATE);
61 BF_SETV(LRADC_CTRL2, DIVIDE_BY_TWO, 1 << src);
62}
63
64#define BP_LRADC_CTRL1_LRADCx_IRQ(x) (x)
65#define BM_LRADC_CTRL1_LRADCx_IRQ(x) (1 << (x))
66
67static inline int __attribute__((always_inline)) read_lradc(int src)
68{
69 BF_CLR(LRADC_CTRL1, LRADCx_IRQ(src));
70 BF_SETV(LRADC_CTRL0, SCHEDULE, 1 << src);
71 while(!BF_RD(LRADC_CTRL1, LRADCx_IRQ(src)));
72 return BF_RDn(LRADC_CHn, src, VALUE);
73}
74
75static inline void __attribute__((noreturn)) power_down()
76{
77 /* power down */
78 HW_POWER_RESET = BM_OR2(POWER_RESET, UNLOCK, PWD);
79 while(1);
80}
81
82/**
83 * Boot decision functions
84 */
85
86#if defined(CREATIVE_ZENMOZAIC) || defined(CREATIVE_ZEN) || defined(CREATIVE_ZENXFI)
87static enum boot_t boot_decision()
88{
89 setup_lradc(0); // setup LRADC channel 0 to read keys
90 /* make a decision */
91 /* read keys */
92 int val = read_lradc(0);
93 /* if back is pressed, boot to OF
94 * otherwise boot to RB */
95 if(val >= 2650 && val < 2750) // conveniently, all players use the same value
96 return BOOT_OF;
97 return BOOT_ROCK;
98}
99#else
100#warning You should define a target specific boot decision function
101static int boot_decision()
102{
103 return BOOT_ROCK;
104}
105#endif
106
107static int main(uint32_t rb_addr, uint32_t of_addr)
108{
109 switch(boot_decision())
110 {
111 case BOOT_ROCK:
112 return rb_addr;
113 case BOOT_OF:
114 /* fix back the loading address
115 /* NOTE: see mkzenboot for more details */
116 *(uint32_t *)0x20 = of_addr;
117 return 0;
118 case BOOT_STOP:
119 default:
120 power_down();
121 }
122}
123
124/** Glue for the linker mostly */
125
126extern uint32_t of_vector;
127extern uint32_t rb_vector;
128extern uint32_t boot_arg;
129
130void __attribute__((section(".start"))) start()
131{
132 uint32_t addr = main(rb_vector, of_vector);
133 ((void (*)(uint32_t))addr)(boot_arg);
134}
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 @@
1ENTRY(start)
2OUTPUT_FORMAT(elf32-littlearm)
3OUTPUT_ARCH(arm)
4
5MEMORY
6{
7 /* keep this consistent with the address in mkzenboot.c */
8#if IMX233_SUBTARGET == 3700
9 RAM : ORIGIN = 0x41000000, LENGTH = 0x8000
10#elif IMX233_SUBTARGET == 3600
11 RAM : ORIGIN = 0x61000000, LENGTH = 0x8000
12#else
13#error define me
14#endif
15}
16
17SECTIONS
18{
19 .text :
20 {
21 *(.start*)
22 *(.text*)
23 . = ALIGN(4);
24 LONG(0x1ceb00da)
25 of_vector = .;
26 . += 4;
27 rb_vector = .;
28 . += 4;
29 boot_arg = .;
30 . += 4;
31 } > RAM
32}
generated by cgit v1.2.3 (git 2.39.1) at 2024-09-24 13:24:58 +0000