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imx233: always boot when powered up from 5v

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Change-Id: I3adb901d293c801f0a8493ae4f0b23af4fa535e8
This commit is contained in:
Amaury Pouly 2012-02-29 00:02:31 +01:00
parent 0d78dd170d
commit 8c0c844b7b
3 changed files with 22 additions and 11 deletions
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20
rbutil/mkimxboot/dualboot.c
View file

@ -2,13 +2,15 @@
#include "dualboot.h" #include "dualboot.h"
unsigned char dualboot_fuzeplus[128] = { unsigned char dualboot_fuzeplus[152] = {
0x60, 0x20, 0x9f, 0xe5, 0x00, 0x20, 0x92, 0xe5, 0x01, 0x01, 0x12, 0xe3, 0x00, 0x00, 0xa0, 0x03, 0x78, 0x20, 0x9f, 0xe5, 0x00, 0x20, 0x92, 0xe5, 0x01, 0x01, 0x12, 0xe3, 0x00, 0x00, 0xa0, 0x03,
0x1e, 0xff, 0x2f, 0x01, 0x70, 0x40, 0x2d, 0xe9, 0x4c, 0x20, 0x9f, 0xe5, 0x00, 0x40, 0xa0, 0xe3, 0x1e, 0xff, 0x2f, 0x01, 0x70, 0x40, 0x2d, 0xe9, 0x64, 0x20, 0x9f, 0xe5, 0x00, 0x20, 0x92, 0xe5,
0x48, 0x30, 0x9f, 0xe5, 0x00, 0x30, 0x93, 0xe5, 0x03, 0x35, 0xa0, 0xe1, 0x23, 0x3f, 0xa0, 0xe1, 0x02, 0x21, 0xa0, 0xe1, 0x22, 0x2d, 0xa0, 0xe1, 0x20, 0x00, 0x12, 0xe3, 0x0c, 0x00, 0x00, 0x1a,
0x01, 0x00, 0x53, 0xe3, 0x03, 0x40, 0x84, 0x00, 0x01, 0x20, 0x52, 0xe2, 0xf7, 0xff, 0xff, 0x1a, 0x50, 0x20, 0x9f, 0xe5, 0x00, 0x40, 0xa0, 0xe3, 0x44, 0x30, 0x9f, 0xe5, 0x00, 0x30, 0x93, 0xe5,
0x2c, 0x20, 0x9f, 0xe5, 0x02, 0x00, 0x54, 0xe1, 0x02, 0x00, 0x00, 0x3a, 0x00, 0x00, 0x81, 0xe5, 0x03, 0x35, 0xa0, 0xe1, 0x23, 0x3f, 0xa0, 0xe1, 0x01, 0x00, 0x53, 0xe3, 0x03, 0x40, 0x84, 0x00,
0x01, 0x00, 0xa0, 0xe3, 0x70, 0x80, 0xbd, 0xe8, 0x18, 0x00, 0x9f, 0xe5, 0x18, 0x10, 0x9f, 0xe5, 0x01, 0x20, 0x52, 0xe2, 0xf7, 0xff, 0xff, 0x1a, 0x2c, 0x20, 0x9f, 0xe5, 0x02, 0x00, 0x54, 0xe1,
0x00, 0x10, 0x80, 0xe5, 0xfb, 0xff, 0xff, 0xea, 0x10, 0x86, 0x01, 0x80, 0x70, 0x64, 0x08, 0x00, 0x02, 0x00, 0x00, 0x3a, 0x00, 0x00, 0x81, 0xe5, 0x01, 0x00, 0xa0, 0xe3, 0x70, 0x80, 0xbd, 0xe8,
0xc0, 0x40, 0x04, 0x80, 0x80, 0x1a, 0x06, 0x00, 0x00, 0x41, 0x04, 0x80, 0x01, 0x00, 0x77, 0x3e 0x18, 0x00, 0x9f, 0xe5, 0x18, 0x10, 0x9f, 0xe5, 0x00, 0x10, 0x80, 0xe5, 0xfb, 0xff, 0xff, 0xea,
0x10, 0x86, 0x01, 0x80, 0xc0, 0x40, 0x04, 0x80, 0x70, 0x64, 0x08, 0x00, 0x80, 0x1a, 0x06, 0x00,
0x00, 0x41, 0x04, 0x80, 0x01, 0x00, 0x77, 0x3e
}; };

2
rbutil/mkimxboot/dualboot.h
View file

@ -1,3 +1,3 @@
/* Generated by bin2c */ /* Generated by bin2c */
extern unsigned char dualboot_fuzeplus[128]; extern unsigned char dualboot_fuzeplus[152];

11
rbutil/mkimxboot/dualboot/dualboot.S
View file

@ -30,8 +30,16 @@ start:
tst r2, #0x40000000 @ bit 30, active low tst r2, #0x40000000 @ bit 30, active low
moveq r0, #0 @ return 0, continue boot moveq r0, #0 @ return 0, continue boot
bxeq lr bxeq lr
/* otherwise monitor the power button for a short time */ /* save registers for the ROM */
stmfd sp!, {r4-r6,lr} stmfd sp!, {r4-r6,lr}
/* if the power source was 5v (ie usb), bypass the power button delay */
ldr r2, =0x800440c0 @ HW_POWER_STS
ldr r2, [r2]
mov r2, r2, lsl#2
mov r2, r2, lsr#26 @ extract PWRUP_SOURCE
tst r2, #0x20 @ bit 5: five volts
bne boot_rockbox
/* otherwise monitor the power button for a short time */
ldr r2, =550000 @ loop count ldr r2, =550000 @ loop count
ldr r4, =0 @ number of times PSWITCH was 1 ldr r4, =0 @ number of times PSWITCH was 1
pswitch_monitor_loop: pswitch_monitor_loop:
@ -48,6 +56,7 @@ pswitch_monitor_loop:
cmp r4, r2 cmp r4, r2
bcc power_down bcc power_down
/* jump to section given as argument */ /* jump to section given as argument */
boot_rockbox:
str r0, [r1] str r0, [r1]
mov r0, #1 mov r0, #1
ldmfd sp!, {r4-r6,pc} ldmfd sp!, {r4-r6,pc}