u-boot/post/post.c

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// SPDX-License-Identifier: GPL-2.0+
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/*
* (C) Copyright 2002
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*/
#include <common.h>
#include <bootstage.h>
#include <env.h>
#include <log.h>
#include <malloc.h>
#include <stdio_dev.h>
#include <time.h>
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#include <watchdog.h>
#include <div64.h>
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#include <post.h>
#ifdef CONFIG_SYS_POST_HOTKEYS_GPIO
#include <asm/gpio.h>
#endif
DECLARE_GLOBAL_DATA_PTR;
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#define POST_MAX_NUMBER 32
#define BOOTMODE_MAGIC 0xDEAD0000
int post_init_f(void)
{
int res = 0;
unsigned int i;
for (i = 0; i < post_list_size; i++) {
struct post_test *test = post_list + i;
if (test->init_f && test->init_f())
res = -1;
}
gd->post_init_f_time = post_time_ms(0);
if (!gd->post_init_f_time)
printf("%s: post_time_ms not implemented\n", __FILE__);
return res;
}
/*
* Supply a default implementation for post_hotkeys_pressed() for boards
* without hotkey support. We always return 0 here, so that the
* long-running tests won't be started.
*
* Boards with hotkey support can override this weak default function
* by defining one in their board specific code.
*/
__weak int post_hotkeys_pressed(void)
{
#ifdef CONFIG_SYS_POST_HOTKEYS_GPIO
int ret;
unsigned gpio = CONFIG_SYS_POST_HOTKEYS_GPIO;
ret = gpio_request(gpio, "hotkeys");
if (ret) {
printf("POST: gpio hotkey request failed\n");
return 0;
}
gpio_direction_input(gpio);
ret = gpio_get_value(gpio);
gpio_free(gpio);
return ret;
#endif
return 0; /* No hotkeys supported */
}
void post_bootmode_init(void)
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{
int bootmode = post_bootmode_get(0);
int newword;
if (post_hotkeys_pressed() && !(bootmode & POST_POWERTEST))
newword = BOOTMODE_MAGIC | POST_SLOWTEST;
else if (bootmode == 0)
newword = BOOTMODE_MAGIC | POST_POWERON;
else if (bootmode == POST_POWERON || bootmode == POST_SLOWTEST)
newword = BOOTMODE_MAGIC | POST_NORMAL;
else
/* Use old value */
newword = post_word_load() & ~POST_COLDBOOT;
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if (bootmode == 0)
/* We are booting after power-on */
newword |= POST_COLDBOOT;
post_word_store(newword);
/* Reset activity record */
gd->post_log_word = 0;
gd->post_log_res = 0;
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}
int post_bootmode_get(unsigned int *last_test)
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{
unsigned long word = post_word_load();
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int bootmode;
if ((word & 0xFFFF0000) != BOOTMODE_MAGIC)
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return 0;
bootmode = word & 0x7F;
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if (last_test && (bootmode & POST_POWERTEST))
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*last_test = (word >> 8) & 0xFF;
return bootmode;
}
/* POST tests run before relocation only mark status bits .... */
static void post_log_mark_start(unsigned long testid)
{
gd->post_log_word |= testid;
}
static void post_log_mark_succ(unsigned long testid)
{
gd->post_log_res |= testid;
}
/* ... and the messages are output once we are relocated */
int post_output_backlog(void)
{
int j;
for (j = 0; j < post_list_size; j++) {
if (gd->post_log_word & (post_list[j].testid)) {
post_log("POST %s ", post_list[j].cmd);
if (gd->post_log_res & post_list[j].testid)
post_log("PASSED\n");
else {
post_log("FAILED\n");
bootstage_error(BOOTSTAGE_ID_POST_FAIL_R);
}
}
}
return 0;
}
static void post_bootmode_test_on(unsigned int last_test)
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{
unsigned long word = post_word_load();
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word |= POST_POWERTEST;
word |= (last_test & 0xFF) << 8;
post_word_store(word);
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}
static void post_bootmode_test_off(void)
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{
unsigned long word = post_word_load();
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word &= ~POST_POWERTEST;
post_word_store(word);
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}
#ifndef CONFIG_POST_SKIP_ENV_FLAGS
static void post_get_env_flags(int *test_flags)
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{
int flag[] = { POST_POWERON, POST_NORMAL, POST_SLOWTEST,
POST_CRITICAL };
char *var[] = { "post_poweron", "post_normal", "post_slowtest",
"post_critical" };
int varnum = ARRAY_SIZE(var);
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char list[128]; /* long enough for POST list */
char *name;
char *s;
int last;
int i, j;
for (i = 0; i < varnum; i++) {
if (env_get_f(var[i], list, sizeof(list)) <= 0)
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continue;
for (j = 0; j < post_list_size; j++)
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test_flags[j] &= ~flag[i];
last = 0;
name = list;
while (!last) {
while (*name == ' ')
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name++;
if (*name == 0)
break;
s = name + 1;
while (*s && *s != ' ')
s++;
if (*s == 0)
last = 1;
else
*s = 0;
for (j = 0; j < post_list_size; j++) {
if (strcmp(post_list[j].cmd, name) == 0) {
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test_flags[j] |= flag[i];
break;
}
}
if (j == post_list_size)
printf("No such test: %s\n", name);
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name = s + 1;
}
}
}
#endif
static void post_get_flags(int *test_flags)
{
int j;
for (j = 0; j < post_list_size; j++)
test_flags[j] = post_list[j].flags;
#ifndef CONFIG_POST_SKIP_ENV_FLAGS
post_get_env_flags(test_flags);
#endif
for (j = 0; j < post_list_size; j++)
if (test_flags[j] & POST_POWERON)
test_flags[j] |= POST_SLOWTEST;
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}
__weak void show_post_progress(unsigned int test_num, int before, int result)
{
}
static int post_run_single(struct post_test *test,
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int test_flags, int flags, unsigned int i)
{
if ((flags & test_flags & POST_ALWAYS) &&
(flags & test_flags & POST_MEM)) {
WATCHDOG_RESET();
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if (!(flags & POST_REBOOT)) {
if ((test_flags & POST_REBOOT) &&
!(flags & POST_MANUAL)) {
post_bootmode_test_on(
(gd->flags & GD_FLG_POSTFAIL) ?
POST_FAIL_SAVE | i : i);
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}
if (test_flags & POST_PREREL)
post_log_mark_start(test->testid);
else
post_log("POST %s ", test->cmd);
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}
show_post_progress(i, POST_BEFORE, POST_FAILED);
if (test_flags & POST_PREREL) {
if ((*test->test)(flags) == 0) {
post_log_mark_succ(test->testid);
show_post_progress(i, POST_AFTER, POST_PASSED);
} else {
show_post_progress(i, POST_AFTER, POST_FAILED);
if (test_flags & POST_CRITICAL)
gd->flags |= GD_FLG_POSTFAIL;
if (test_flags & POST_STOP)
gd->flags |= GD_FLG_POSTSTOP;
}
} else {
if ((*test->test)(flags) != 0) {
post_log("FAILED\n");
bootstage_error(BOOTSTAGE_ID_POST_FAIL_R);
show_post_progress(i, POST_AFTER, POST_FAILED);
if (test_flags & POST_CRITICAL)
gd->flags |= GD_FLG_POSTFAIL;
if (test_flags & POST_STOP)
gd->flags |= GD_FLG_POSTSTOP;
} else {
post_log("PASSED\n");
show_post_progress(i, POST_AFTER, POST_PASSED);
}
}
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if ((test_flags & POST_REBOOT) && !(flags & POST_MANUAL))
post_bootmode_test_off();
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return 0;
} else {
return -1;
}
}
int post_run(char *name, int flags)
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{
unsigned int i;
int test_flags[POST_MAX_NUMBER];
post_get_flags(test_flags);
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if (name == NULL) {
unsigned int last;
if (gd->flags & GD_FLG_POSTSTOP)
return 0;
if (post_bootmode_get(&last) & POST_POWERTEST) {
if (last & POST_FAIL_SAVE) {
last &= ~POST_FAIL_SAVE;
gd->flags |= GD_FLG_POSTFAIL;
}
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if (last < post_list_size &&
(flags & test_flags[last] & POST_ALWAYS) &&
(flags & test_flags[last] & POST_MEM)) {
post_run_single(post_list + last,
test_flags[last],
flags | POST_REBOOT, last);
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for (i = last + 1; i < post_list_size; i++) {
if (gd->flags & GD_FLG_POSTSTOP)
break;
post_run_single(post_list + i,
test_flags[i],
flags, i);
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}
}
} else {
for (i = 0; i < post_list_size; i++) {
if (gd->flags & GD_FLG_POSTSTOP)
break;
post_run_single(post_list + i,
test_flags[i],
flags, i);
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}
}
return 0;
} else {
for (i = 0; i < post_list_size; i++) {
if (strcmp(post_list[i].cmd, name) == 0)
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break;
}
if (i < post_list_size) {
WATCHDOG_RESET();
return post_run_single(post_list + i,
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test_flags[i],
flags, i);
} else {
return -1;
}
}
}
static int post_info_single(struct post_test *test, int full)
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{
if (test->flags & POST_MANUAL) {
if (full)
printf("%s - %s\n"
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" %s\n", test->cmd, test->name, test->desc);
else
printf(" %-15s - %s\n", test->cmd, test->name);
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return 0;
} else {
return -1;
}
}
int post_info(char *name)
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{
unsigned int i;
if (name == NULL) {
for (i = 0; i < post_list_size; i++)
post_info_single(post_list + i, 0);
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return 0;
} else {
for (i = 0; i < post_list_size; i++) {
if (strcmp(post_list[i].cmd, name) == 0)
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break;
}
if (i < post_list_size)
return post_info_single(post_list + i, 1);
else
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return -1;
}
}
int post_log(char *format, ...)
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{
va_list args;
char printbuffer[CONFIG_SYS_PBSIZE];
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va_start(args, format);
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/* For this to work, printbuffer must be larger than
* anything we ever want to print.
*/
vsprintf(printbuffer, format, args);
va_end(args);
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/* Send to the stdout file */
puts(printbuffer);
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return 0;
}
#ifdef CONFIG_NEEDS_MANUAL_RELOC
void post_reloc(void)
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{
unsigned int i;
/*
* We have to relocate the test table manually
*/
for (i = 0; i < post_list_size; i++) {
ulong addr;
struct post_test *test = post_list + i;
if (test->name) {
addr = (ulong)(test->name) + gd->reloc_off;
test->name = (char *)addr;
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}
if (test->cmd) {
addr = (ulong)(test->cmd) + gd->reloc_off;
test->cmd = (char *)addr;
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}
if (test->desc) {
addr = (ulong)(test->desc) + gd->reloc_off;
test->desc = (char *)addr;
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}
if (test->test) {
addr = (ulong)(test->test) + gd->reloc_off;
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test->test = (int (*)(int flags)) addr;
}
if (test->init_f) {
addr = (ulong)(test->init_f) + gd->reloc_off;
test->init_f = (int (*)(void)) addr;
}
if (test->reloc) {
addr = (ulong)(test->reloc) + gd->reloc_off;
test->reloc = (void (*)(void)) addr;
test->reloc();
}
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}
}
#endif
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/*
* Some tests (e.g. SYSMON) need the time when post_init_f started,
* but we cannot use get_timer() at this point.
*
* On PowerPC we implement it using the timebase register.
*/
unsigned long post_time_ms(unsigned long base)
{
#if defined(CONFIG_PPC) || defined(CONFIG_ARM)
return (unsigned long)lldiv(get_ticks(), get_tbclk() / CONFIG_SYS_HZ)
- base;
#else
#warning "Not implemented yet"
return 0; /* Not implemented yet */
#endif
}