sravan/system76-embedded-controller
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Use watchdog reset for exiting scratch rom

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This commit is contained in:
Jeremy Soller
2020-01-21 14:21:12 -07:00
parent 131d936a98
commit 1b5dc21552
3 changed files with 18 additions and 0 deletions
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6
src/board/system76/darp5/scratch/main.c
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@@ -10,6 +10,9 @@ volatile uint8_t __xdata __at(0x103D) ECINDAR2;
volatile uint8_t __xdata __at(0x103E) ECINDAR3; volatile uint8_t __xdata __at(0x103E) ECINDAR3;
volatile uint8_t __xdata __at(0x103F) ECINDDR; volatile uint8_t __xdata __at(0x103F) ECINDDR;
volatile uint8_t __xdata __at(0x1F01) ETWCFG;
volatile uint8_t __xdata __at(0x1F07) EWDKEYR;
uint8_t acpi_read(uint8_t addr) { uint8_t acpi_read(uint8_t addr) {
uint8_t data = 0; uint8_t data = 0;
@@ -87,6 +90,9 @@ void pmc_event(struct Pmc * pmc) {
__asm__("nop"); __asm__("nop");
__asm__("mov 0xf7, #1"); __asm__("mov 0xf7, #1");
__asm__("nop"); __asm__("nop");
// Attempt to trigger watchdog reset
ETWCFG |= (1 << 5);
EWDKEYR = 0;
// Exit scratch ROM by going through trampoline // Exit scratch ROM by going through trampoline
__asm__("ljmp 0x1000"); __asm__("ljmp 0x1000");
break; break;

6
src/board/system76/galp3-c/scratch/main.c
View File

@@ -10,6 +10,9 @@ volatile uint8_t __xdata __at(0x103D) ECINDAR2;
volatile uint8_t __xdata __at(0x103E) ECINDAR3; volatile uint8_t __xdata __at(0x103E) ECINDAR3;
volatile uint8_t __xdata __at(0x103F) ECINDDR; volatile uint8_t __xdata __at(0x103F) ECINDDR;
volatile uint8_t __xdata __at(0x1F01) ETWCFG;
volatile uint8_t __xdata __at(0x1F07) EWDKEYR;
uint8_t acpi_read(uint8_t addr) { uint8_t acpi_read(uint8_t addr) {
uint8_t data = 0; uint8_t data = 0;
@@ -87,6 +90,9 @@ void pmc_event(struct Pmc * pmc) {
__asm__("nop"); __asm__("nop");
__asm__("mov 0xf7, #1"); __asm__("mov 0xf7, #1");
__asm__("nop"); __asm__("nop");
// Attempt to trigger watchdog reset
ETWCFG |= (1 << 5);
EWDKEYR = 0;
// Exit scratch ROM by going through trampoline // Exit scratch ROM by going through trampoline
__asm__("ljmp 0x1000"); __asm__("ljmp 0x1000");
break; break;

6
src/board/system76/lemp9/scratch/main.c
View File

@@ -10,6 +10,9 @@ volatile uint8_t __xdata __at(0x103D) ECINDAR2;
volatile uint8_t __xdata __at(0x103E) ECINDAR3; volatile uint8_t __xdata __at(0x103E) ECINDAR3;
volatile uint8_t __xdata __at(0x103F) ECINDDR; volatile uint8_t __xdata __at(0x103F) ECINDDR;
volatile uint8_t __xdata __at(0x1F01) ETWCFG;
volatile uint8_t __xdata __at(0x1F07) EWDKEYR;
uint8_t acpi_read(uint8_t addr) { uint8_t acpi_read(uint8_t addr) {
uint8_t data = 0; uint8_t data = 0;
@@ -87,6 +90,9 @@ void pmc_event(struct Pmc * pmc) {
__asm__("nop"); __asm__("nop");
__asm__("mov 0xf7, #1"); __asm__("mov 0xf7, #1");
__asm__("nop"); __asm__("nop");
// Attempt to trigger watchdog reset
ETWCFG |= (1 << 5);
EWDKEYR = 0;
// Exit scratch ROM by going through trampoline // Exit scratch ROM by going through trampoline
__asm__("ljmp 0x1000"); __asm__("ljmp 0x1000");
break; break;