mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-13 06:42:56 +00:00
35b65dd8ef
Historically, the reset_cpu() function had an `addr` parameter which was meant to pass in an address of the reset vector location, where the CPU should reset to. This feature is no longer used anywhere in U-Boot as all reset_cpu() implementations now ignore the passed value. Generic code has been added which always calls reset_cpu() with `0` which means this feature can no longer be used easily anyway. Over time, many implementations seem to have "misunderstood" the existence of this parameter as a way to customize/parameterize the reset (e.g. COLD vs WARM resets). As this is not properly supported, the code will almost always not do what it is intended to (because all call-sites just call reset_cpu() with 0). To avoid confusion and to clean up the codebase from unused left-overs of the past, remove the `addr` parameter entirely. Code which intends to support different kinds of resets should be rewritten as a sysreset driver instead. This transformation was done with the following coccinelle patch: @@ expression argvalue; @@ - reset_cpu(argvalue) + reset_cpu() @@ identifier argname; type argtype; @@ - reset_cpu(argtype argname) + reset_cpu(void) { ... } Signed-off-by: Harald Seiler <hws@denx.de> Reviewed-by: Simon Glass <sjg@chromium.org>
209 lines
4.5 KiB
C
209 lines
4.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Board init file for Dragonboard 410C
|
|
*
|
|
* (C) Copyright 2015 Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <cpu_func.h>
|
|
#include <dm.h>
|
|
#include <env.h>
|
|
#include <init.h>
|
|
#include <net.h>
|
|
#include <usb.h>
|
|
#include <asm/cache.h>
|
|
#include <asm/global_data.h>
|
|
#include <asm/gpio.h>
|
|
#include <fdt_support.h>
|
|
#include <asm/arch/dram.h>
|
|
#include <asm/arch/misc.h>
|
|
#include <linux/delay.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
/* pointer to the device tree ammended by the firmware */
|
|
extern void *fw_dtb;
|
|
|
|
void *board_fdt_blob_setup(void)
|
|
{
|
|
if (fdt_magic(fw_dtb) != FDT_MAGIC) {
|
|
printf("Firmware provided invalid dtb!\n");
|
|
return NULL;
|
|
}
|
|
|
|
return fw_dtb;
|
|
}
|
|
|
|
int dram_init(void)
|
|
{
|
|
gd->ram_size = PHYS_SDRAM_1_SIZE;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int dram_init_banksize(void)
|
|
{
|
|
gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
|
|
gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int board_usb_init(int index, enum usb_init_type init)
|
|
{
|
|
static struct udevice *pmic_gpio;
|
|
static struct gpio_desc hub_reset, usb_sel;
|
|
int ret = 0, node;
|
|
|
|
if (!pmic_gpio) {
|
|
ret = uclass_get_device_by_name(UCLASS_GPIO,
|
|
"pm8916_gpios@c000",
|
|
&pmic_gpio);
|
|
if (ret < 0) {
|
|
printf("Failed to find pm8916_gpios@c000 node.\n");
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
/* Try to request gpios needed to start usb host on dragonboard */
|
|
if (!dm_gpio_is_valid(&hub_reset)) {
|
|
node = fdt_subnode_offset(gd->fdt_blob,
|
|
dev_of_offset(pmic_gpio),
|
|
"usb_hub_reset_pm");
|
|
if (node < 0) {
|
|
printf("Failed to find usb_hub_reset_pm dt node.\n");
|
|
return node;
|
|
}
|
|
ret = gpio_request_by_name_nodev(offset_to_ofnode(node),
|
|
"gpios", 0, &hub_reset, 0);
|
|
if (ret < 0) {
|
|
printf("Failed to request usb_hub_reset_pm gpio.\n");
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
if (!dm_gpio_is_valid(&usb_sel)) {
|
|
node = fdt_subnode_offset(gd->fdt_blob,
|
|
dev_of_offset(pmic_gpio),
|
|
"usb_sw_sel_pm");
|
|
if (node < 0) {
|
|
printf("Failed to find usb_sw_sel_pm dt node.\n");
|
|
return 0;
|
|
}
|
|
ret = gpio_request_by_name_nodev(offset_to_ofnode(node),
|
|
"gpios", 0, &usb_sel, 0);
|
|
if (ret < 0) {
|
|
printf("Failed to request usb_sw_sel_pm gpio.\n");
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
if (init == USB_INIT_HOST) {
|
|
/* Start USB Hub */
|
|
dm_gpio_set_dir_flags(&hub_reset,
|
|
GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
|
|
mdelay(100);
|
|
/* Switch usb to host connectors */
|
|
dm_gpio_set_dir_flags(&usb_sel,
|
|
GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
|
|
mdelay(100);
|
|
} else { /* Device */
|
|
/* Disable hub */
|
|
dm_gpio_set_dir_flags(&hub_reset, GPIOD_IS_OUT);
|
|
/* Switch back to device connector */
|
|
dm_gpio_set_dir_flags(&usb_sel, GPIOD_IS_OUT);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Check for vol- button - if pressed - stop autoboot */
|
|
int misc_init_r(void)
|
|
{
|
|
struct udevice *pon;
|
|
struct gpio_desc resin;
|
|
int node, ret;
|
|
|
|
ret = uclass_get_device_by_name(UCLASS_GPIO, "pm8916_pon@800", &pon);
|
|
if (ret < 0) {
|
|
printf("Failed to find PMIC pon node. Check device tree\n");
|
|
return 0;
|
|
}
|
|
|
|
node = fdt_subnode_offset(gd->fdt_blob, dev_of_offset(pon),
|
|
"key_vol_down");
|
|
if (node < 0) {
|
|
printf("Failed to find key_vol_down node. Check device tree\n");
|
|
return 0;
|
|
}
|
|
|
|
if (gpio_request_by_name_nodev(offset_to_ofnode(node), "gpios", 0,
|
|
&resin, 0)) {
|
|
printf("Failed to request key_vol_down button.\n");
|
|
return 0;
|
|
}
|
|
|
|
if (dm_gpio_get_value(&resin)) {
|
|
env_set("bootdelay", "-1");
|
|
env_set("bootcmd", "fastboot 0");
|
|
printf("key_vol_down pressed - Starting fastboot.\n");
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int board_init(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
int board_late_init(void)
|
|
{
|
|
char serial[16];
|
|
|
|
memset(serial, 0, 16);
|
|
snprintf(serial, 13, "%x", msm_board_serial());
|
|
env_set("serial#", serial);
|
|
return 0;
|
|
}
|
|
|
|
/* Fixup of DTB for Linux Kernel
|
|
* 1. Fixup installed DRAM.
|
|
* 2. Fixup WLAN/BT Mac address:
|
|
* First, check if MAC addresses for WLAN/BT exists as environemnt
|
|
* variables wlanaddr,btaddr. if not, generate a unique address.
|
|
*/
|
|
|
|
int ft_board_setup(void *blob, struct bd_info *bd)
|
|
{
|
|
u8 mac[ARP_HLEN];
|
|
|
|
msm_fixup_memory(blob);
|
|
|
|
if (!eth_env_get_enetaddr("wlanaddr", mac)) {
|
|
msm_generate_mac_addr(mac);
|
|
};
|
|
|
|
do_fixup_by_compat(blob, "qcom,wcnss-wlan",
|
|
"local-mac-address", mac, ARP_HLEN, 1);
|
|
|
|
|
|
if (!eth_env_get_enetaddr("btaddr", mac)) {
|
|
msm_generate_mac_addr(mac);
|
|
|
|
/* The BD address is same as WLAN MAC address but with
|
|
* least significant bit flipped.
|
|
*/
|
|
mac[0] ^= 0x01;
|
|
};
|
|
|
|
do_fixup_by_compat(blob, "qcom,wcnss-bt",
|
|
"local-bd-address", mac, ARP_HLEN, 1);
|
|
return 0;
|
|
}
|
|
|
|
void reset_cpu(void)
|
|
{
|
|
psci_system_reset();
|
|
}
|