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-rw-r--r--utils/mkimxboot/dualboot/Makefile48
-rw-r--r--utils/mkimxboot/dualboot/bin2c.c140
-rw-r--r--utils/mkimxboot/dualboot/config.h26
-rw-r--r--utils/mkimxboot/dualboot/dualboot.c323
-rw-r--r--utils/mkimxboot/dualboot/dualboot.lds17
5 files changed, 554 insertions, 0 deletions
diff --git a/utils/mkimxboot/dualboot/Makefile b/utils/mkimxboot/dualboot/Makefile
new file mode 100644
index 0000000000..b80233226a
--- /dev/null
+++ b/utils/mkimxboot/dualboot/Makefile
@@ -0,0 +1,48 @@
1CC=gcc
2LD=ld
3OC=objcopy
4PREFIX?=arm-elf-eabi-
5IMX233_PATH=../../../firmware/target/arm/imx233
6CFLAGS=-mcpu=arm926ej-s -std=gnu99 -I. -I$(IMX233_PATH) -nostdlib -ffreestanding -fomit-frame-pointer -O
7# Edit the following variables when adding a new target.
8# mkimxboot.c also needs to be edited to refer to these
9# To add a new target x you need to:
10# 1) add x to the list in TARGETS
11# 2) create a variable named OPT_x of the form:
12# OPT_x=target specific defines
13TARGETS=fuzeplus zenxfi2 zenxfi3 nwze370 nwze360 zenxfistyle
14OPT_fuzeplus=-DSANSA_FUZEPLUS -DIMX233_SUBTARGET=3780
15OPT_zenxfi2=-DCREATIVE_ZENXFI2 -DIMX233_SUBTARGET=3780
16OPT_zenxfi3=-DCREATIVE_ZENXFI3 -DIMX233_SUBTARGET=3780
17OPT_nwze370=-DSONY_NWZE370 -DIMX233_SUBTARGET=3780
18OPT_nwze360=-DSONY_NWZE360 -DIMX233_SUBTARGET=3780
19OPT_zenxfistyle=-DCREATIVE_ZENXFISTYLE -DIMX233_SUBTARGET=3780
20
21BOOTOBJS=$(patsubst %, dualboot_%.o, $(TARGETS))
22BOOTBINS=$(patsubst %, dualboot_%.arm-bin, $(TARGETS))
23BOOTELFS=$(patsubst %, dualboot_%.arm-elf, $(TARGETS))
24
25all: ../dualboot.h ../dualboot.c $(BOOTELFS)
26
27# Dualboot bootloaders
28
29dualboot_%.o: dualboot.c
30 $(PREFIX)$(CC) $(CFLAGS) $(OPT_$(@:dualboot_%.o=%)) -c -o $@ $^
31
32dualboot_%.arm-elf: dualboot_%.o
33 $(PREFIX)$(LD) $(LDFLAGS) -Tdualboot.lds -o $@ $<
34
35# Rules for the ARM code embedded in mkamsboot - assemble, link, then extract
36# the binary code and finally convert to .h for building in mkamsboot
37
38%.arm-bin: %.arm-elf
39 $(PREFIX)$(OC) -O binary $< $@
40
41../dualboot.c ../dualboot.h: $(BOOTBINS) bin2c
42 ./bin2c ../dualboot $(BOOTBINS)
43
44bin2c: bin2c.c
45 $(CC) -o bin2c bin2c.c
46
47clean:
48 rm -f *~ bin2c $(BOOTBINS) $(BOOTOBJS) $(BOOTELFS)
diff --git a/utils/mkimxboot/dualboot/bin2c.c b/utils/mkimxboot/dualboot/bin2c.c
new file mode 100644
index 0000000000..b02af88a4d
--- /dev/null
+++ b/utils/mkimxboot/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/utils/mkimxboot/dualboot/config.h b/utils/mkimxboot/dualboot/config.h
new file mode 100644
index 0000000000..e9ea8d4a35
--- /dev/null
+++ b/utils/mkimxboot/dualboot/config.h
@@ -0,0 +1,26 @@
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/** mostly empty, used by register files and dualboot */
23#define COMPILE_DUALBOOT_STUB
24
25/* obviously we have the dualboot stub! */
26#define HAVE_DUALBOOT_STUB
diff --git a/utils/mkimxboot/dualboot/dualboot.c b/utils/mkimxboot/dualboot/dualboot.c
new file mode 100644
index 0000000000..77b816bf76
--- /dev/null
+++ b/utils/mkimxboot/dualboot/dualboot.c
@@ -0,0 +1,323 @@
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#include "regs/digctl.h"
25#include "regs/clkctrl.h"
26
27#define BOOT_ROM_CONTINUE 0 /* continue boot */
28#define BOOT_ROM_SECTION 1 /* switch to new section *result_id */
29
30#define BOOT_ARG_CHARGE ('c' | 'h' << 8 | 'r' << 16 | 'g' << 24)
31/** additional defines */
32#define BP_LRADC_CTRL4_LRADCxSELECT(x) (4 * (x))
33#define BM_LRADC_CTRL4_LRADCxSELECT(x) (0xf << (4 * (x)))
34
35typedef unsigned long uint32_t;
36
37/* we include the dualboot rtc code directly */
38#include "dualboot-imx233.h"
39#include "dualboot-imx233.c"
40
41// target specific boot context
42enum context_t
43{
44 CONTEXT_NORMAL, /* normal boot */
45 CONTEXT_USB, /* USB plugged boot */
46 CONTEXT_RTC, /* RTC wake up boot */
47};
48// target specific boot decision
49enum boot_t
50{
51 BOOT_STOP, /* power down */
52 BOOT_ROCK, /* boot to Rockbox */
53 BOOT_OF, /* boot to OF */
54};
55
56/**
57 * Helper functions
58 */
59
60static inline int __attribute__((always_inline)) read_gpio(int bank, int pin)
61{
62 return (HW_PINCTRL_DINn(bank) >> pin) & 1;
63}
64
65static inline int __attribute__((always_inline)) read_pswitch(void)
66{
67#if IMX233_SUBTARGET >= 3700
68 return BF_RD(POWER_STS, PSWITCH);
69#else
70 return BF_RD(DIGCTL_STATUS, PSWITCH);
71#endif
72}
73
74/* only works for channels <=7, always divide by 2, never accumulates */
75static inline void __attribute__((always_inline)) setup_lradc(int src)
76{
77 BF_CLR(LRADC_CTRL0, SFTRST);
78 BF_CLR(LRADC_CTRL0, CLKGATE);
79#if IMX233_SUBTARGET >= 3700
80 HW_LRADC_CTRL4_CLR = BM_LRADC_CTRL4_LRADCxSELECT(src);
81 HW_LRADC_CTRL4_SET = src << BP_LRADC_CTRL4_LRADCxSELECT(src);
82#endif
83 HW_LRADC_CHn_CLR(src) = BM_OR(LRADC_CHn, NUM_SAMPLES, ACCUMULATE);
84 BF_WR(LRADC_CTRL2_SET, DIVIDE_BY_TWO(1 << src));
85}
86
87#define BP_LRADC_CTRL1_LRADCx_IRQ(x) (x)
88#define BM_LRADC_CTRL1_LRADCx_IRQ(x) (1 << (x))
89
90static inline int __attribute__((always_inline)) read_lradc(int src)
91{
92 BF_CLR(LRADC_CTRL1, LRADCx_IRQ(src));
93 BF_WR(LRADC_CTRL0_SET, SCHEDULE(1 << src));
94 while(!BF_RD(LRADC_CTRL1, LRADCx_IRQ(src)));
95 return BF_RD(LRADC_CHn(src), VALUE);
96}
97
98static inline void __attribute__((noreturn)) power_down()
99{
100#ifdef SANSA_FUZEPLUS
101 /* B0P09: this pin seems to be important to shutdown the hardware properly */
102 HW_PINCTRL_MUXSELn_SET(0) = 3 << 18;
103 HW_PINCTRL_DOEn(0) = 1 << 9;
104 HW_PINCTRL_DOUTn(0) = 1 << 9;
105#endif
106 /* power down */
107 HW_POWER_RESET = BM_OR(POWER_RESET, UNLOCK, PWD);
108 while(1);
109}
110
111/**
112 * Boot decision functions
113 */
114
115#if defined(SANSA_FUZEPLUS)
116static enum boot_t boot_decision(enum context_t context)
117{
118 /* if volume down is hold, boot to OF */
119 if(!read_gpio(1, 30))
120 return BOOT_OF;
121 /* on normal boot, make sure power button is hold long enough */
122 if(context == CONTEXT_NORMAL)
123 {
124 // monitor PSWITCH
125 int count = 0;
126 for(int i = 0; i < 550000; i++)
127 if(read_pswitch() == 1)
128 count++;
129 if(count < 400000)
130 return BOOT_STOP;
131 }
132 return BOOT_ROCK;
133}
134#elif defined(CREATIVE_ZENXFI2)
135static int boot_decision(int context)
136{
137 /* We are lacking buttons on the Zen X-Fi2 because on USB, the select button
138 * enters recovery mode ! So we can only use power but power is used to power up
139 * on normal boots and then select is free ! Thus use a non-uniform scheme:
140 * - normal boot/RTC:
141 * - no key: Rockbox
142 * - select: OF
143 * - USB boot:
144 * - no key: Rockbox
145 * - power: OF
146 */
147 if(context == CONTEXT_USB)
148 return read_pswitch() == 1 ? BOOT_OF : BOOT_ROCK;
149 else
150 return !read_gpio(0, 14) ? BOOT_OF : BOOT_ROCK;
151}
152#elif defined(CREATIVE_ZENXFI3)
153static int boot_decision(int context)
154{
155 /* if volume down is hold, boot to OF */
156 return !read_gpio(2, 7) ? BOOT_OF : BOOT_ROCK;
157}
158#elif defined(SONY_NWZE360) || defined(SONY_NWZE370)
159static int local_decision(void)
160{
161 /* read keys and pswitch */
162 int val = read_lradc(0);
163 /* if hold is on, power off
164 * if back is pressed, boot to OF
165 * if play is pressed, boot RB
166 * otherwise power off */
167#ifdef SONY_NWZE360
168 if(read_gpio(0, 9) == 0)
169 return BOOT_STOP;
170#endif
171 if(val >= 1050 && val < 1150)
172 return BOOT_OF;
173 if(val >= 1420 && val < 1520)
174 return BOOT_ROCK;
175 return BOOT_STOP;
176}
177
178static int boot_decision(int context)
179{
180 setup_lradc(0); // setup LRADC channel 0 to read keys
181#ifdef SONY_NWZE360
182 HW_PINCTRL_PULLn_SET(0) = 1 << 9; // enable pullup on hold key (B0P09)
183#endif
184 /* make a decision */
185 int decision = local_decision();
186 /* in USB or alarm context, stick to it */
187 if(context == CONTEXT_USB || context == CONTEXT_RTC)
188 {
189 /* never power down so replace power off decision by rockbox */
190 return decision == BOOT_STOP ? BOOT_ROCK : decision;
191 }
192 /* otherwise start a 1 second timeout. Any decision change
193 * will result in power down */
194 uint32_t tmo = HW_DIGCTL_MICROSECONDS + 1000000;
195 while(HW_DIGCTL_MICROSECONDS < tmo)
196 {
197 int new_dec = local_decision();
198 if(new_dec != decision)
199 return BOOT_STOP;
200 }
201 return decision;
202}
203#elif defined(CREATIVE_ZENXFISTYLE)
204static int boot_decision(int context)
205{
206 setup_lradc(2); // setup LRADC channel 2 to read keys
207 /* make a decision */
208 int val = read_lradc(2);
209 /* boot to OF if left is hold
210 * NOTE: VDDIO is set to 3.1V initially and the resistor ladder is wired to
211 * VDDIO so these values are not the same as in the main binary which is
212 * calibrated for VDDIO=3.3V */
213 if(val >= 815 && val < 915)
214 return BOOT_OF;
215 return BOOT_ROCK;
216}
217#else
218#warning You should define a target specific boot decision function
219static int boot_decision(int context)
220{
221 return BOOT_ROCK;
222}
223#endif
224
225/**
226 * Context functions
227 */
228static inline enum context_t get_context(void)
229{
230#if IMX233_SUBTARGET >= 3780
231 /* On the imx233 it's easy because we know the power up source */
232 unsigned pwrup_src = BF_RD(POWER_STS, PWRUP_SOURCE);
233 if(pwrup_src & (1 << 5))
234 return CONTEXT_USB;
235 else if(pwrup_src & (1 << 4))
236 return CONTEXT_RTC;
237 else
238 return CONTEXT_NORMAL;
239#else
240 /* On the other targets, we need to poke a few more registers */
241#endif
242}
243
244/**
245 * Charging function
246 */
247static inline void do_charge(void)
248{
249 BF_CLR(LRADC_CTRL0, SFTRST);
250 BF_CLR(LRADC_CTRL0, CLKGATE);
251 BF_WR(LRADC_DELAYn(0), TRIGGER_LRADCS(0x80));
252 BF_WR(LRADC_DELAYn(0), TRIGGER_DELAYS(0x1));
253 BF_WR(LRADC_DELAYn(0), DELAY(200));
254 BF_SET(LRADC_DELAYn(0), KICK);
255 BF_SET(LRADC_CONVERSION, AUTOMATIC);
256 BF_WR(LRADC_CONVERSION, SCALE_FACTOR_V(LI_ION));
257 BF_WR(POWER_CHARGE, STOP_ILIMIT(1));
258 BF_WR(POWER_CHARGE, BATTCHRG_I(0x10));
259 BF_CLR(POWER_CHARGE, PWD_BATTCHRG);
260#if IMX233_SUBTARGET >= 3780
261 BF_WR(POWER_DCDC4P2, ENABLE_4P2(1));
262 BF_CLR(POWER_5VCTRL, PWD_CHARGE_4P2);
263 BF_WR(POWER_5VCTRL, CHARGE_4P2_ILIMIT(0x10));
264#endif
265 while(1)
266 {
267 BF_WR(CLKCTRL_CPU, INTERRUPT_WAIT(1));
268 asm volatile (
269 "mcr p15, 0, %0, c7, c0, 4 \n" /* Wait for interrupt */
270 "nop\n" /* Datasheet unclear: "The lr sent to handler points here after RTI"*/
271 "nop\n"
272 : : "r"(0)
273 );
274 }
275}
276
277static void set_updater_bits(void)
278{
279 /* The OF will continue to updater if we clear 18 of PERSISTENT1.
280 * See dualboot-imx233.c in firmware/ for more explanation */
281 HW_RTC_PERSISTENT1_CLR = 1 << 18;
282}
283
284int main(uint32_t arg, uint32_t *result_id)
285{
286 if(arg == BOOT_ARG_CHARGE)
287 do_charge();
288 /* tell rockbox that we can handle boot mode */
289 imx233_dualboot_set_field(DUALBOOT_CAP_BOOT, 1);
290 /* if we were asked to boot in a special mode, do so */
291 unsigned boot_mode = imx233_dualboot_get_field(DUALBOOT_BOOT);
292 /* clear boot mode to avoid any loop */
293 imx233_dualboot_set_field(DUALBOOT_BOOT, IMX233_BOOT_NORMAL);
294 switch(boot_mode)
295 {
296 case IMX233_BOOT_UPDATER:
297 set_updater_bits();
298 /* fallthrough */
299 case IMX233_BOOT_OF:
300 /* continue booting */
301 return BOOT_ROM_CONTINUE;
302 case IMX233_BOOT_NORMAL:
303 default:
304 break;
305 }
306 /* normal boot */
307 switch(boot_decision(get_context()))
308 {
309 case BOOT_ROCK:
310 *result_id = arg;
311 return BOOT_ROM_SECTION;
312 case BOOT_OF:
313 return BOOT_ROM_CONTINUE;
314 case BOOT_STOP:
315 default:
316 power_down();
317 }
318}
319
320int __attribute__((section(".start"))) start(uint32_t arg, uint32_t *result_id)
321{
322 return main(arg, result_id);
323}
diff --git a/utils/mkimxboot/dualboot/dualboot.lds b/utils/mkimxboot/dualboot/dualboot.lds
new file mode 100644
index 0000000000..09739aee15
--- /dev/null
+++ b/utils/mkimxboot/dualboot/dualboot.lds
@@ -0,0 +1,17 @@
1ENTRY(start)
2OUTPUT_FORMAT(elf32-littlearm)
3OUTPUT_ARCH(arm)
4
5MEMORY
6{
7 OCRAM : ORIGIN = 0, LENGTH = 0x8000
8}
9
10SECTIONS
11{
12 .text 0 :
13 {
14 *(.start*)
15 *(.text*)
16 } > OCRAM
17}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-07 15:53:25 +0000