From 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 13 May 2024 10:30:14 +0000
Subject: [PATCH] modify sin led gpio
---
kernel/arch/microblaze/kernel/reset.c | 87 +++++--------------------------------------
1 files changed, 11 insertions(+), 76 deletions(-)
diff --git a/kernel/arch/microblaze/kernel/reset.c b/kernel/arch/microblaze/kernel/reset.c
index fcbe1da..5f47229 100644
--- a/kernel/arch/microblaze/kernel/reset.c
+++ b/kernel/arch/microblaze/kernel/reset.c
@@ -8,83 +8,9 @@
*/
#include <linux/init.h>
+#include <linux/delay.h>
#include <linux/of_platform.h>
-
-/* Trigger specific functions */
-#ifdef CONFIG_GPIOLIB
-
-#include <linux/of_gpio.h>
-
-static int handle; /* reset pin handle */
-static unsigned int reset_val;
-
-static int of_platform_reset_gpio_probe(void)
-{
- int ret;
- handle = of_get_named_gpio(of_find_node_by_path("/"),
- "hard-reset-gpios", 0);
-
- if (!gpio_is_valid(handle)) {
- pr_info("Skipping unavailable RESET gpio %d (%s)\n",
- handle, "reset");
- return -ENODEV;
- }
-
- ret = gpio_request(handle, "reset");
- if (ret < 0) {
- pr_info("GPIO pin is already allocated\n");
- return ret;
- }
-
- /* get current setup value */
- reset_val = gpio_get_value(handle);
- /* FIXME maybe worth to perform any action */
- pr_debug("Reset: Gpio output state: 0x%x\n", reset_val);
-
- /* Setup GPIO as output */
- ret = gpio_direction_output(handle, 0);
- if (ret < 0)
- goto err;
-
- /* Setup output direction */
- gpio_set_value(handle, 0);
-
- pr_info("RESET: Registered gpio device: %d, current val: %d\n",
- handle, reset_val);
- return 0;
-err:
- gpio_free(handle);
- return ret;
-}
-device_initcall(of_platform_reset_gpio_probe);
-
-
-static void gpio_system_reset(void)
-{
- if (gpio_is_valid(handle))
- gpio_set_value(handle, 1 - reset_val);
- else
- pr_notice("Reset GPIO unavailable - halting!\n");
-}
-#else
-static void gpio_system_reset(void)
-{
- pr_notice("No reset GPIO present - halting!\n");
-}
-
-void of_platform_reset_gpio_probe(void)
-{
- return;
-}
-#endif
-
-void machine_restart(char *cmd)
-{
- pr_notice("Machine restart...\n");
- gpio_system_reset();
- while (1)
- ;
-}
+#include <linux/reboot.h>
void machine_shutdown(void)
{
@@ -106,3 +32,12 @@
while (1)
;
}
+
+void machine_restart(char *cmd)
+{
+ do_kernel_restart(cmd);
+ /* Give the restart hook 1 s to take us down */
+ mdelay(1000);
+ pr_emerg("Reboot failed -- System halted\n");
+ while (1);
+}
--
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