From 748e4f3d702def1a4bff191e0cf93b6a05340f01 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:41:34 +0000
Subject: [PATCH] add gpio led uart
---
kernel/arch/sparc/kernel/prom_64.c | 88 +++++++++++++++++++++----------------------
1 files changed, 43 insertions(+), 45 deletions(-)
diff --git a/kernel/arch/sparc/kernel/prom_64.c b/kernel/arch/sparc/kernel/prom_64.c
index baeaeed..f883a50 100644
--- a/kernel/arch/sparc/kernel/prom_64.c
+++ b/kernel/arch/sparc/kernel/prom_64.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Procedures for creating, accessing and interpreting the device tree.
*
@@ -8,11 +9,6 @@
* {engebret|bergner}@us.ibm.com
*
* Adapted for sparc64 by David S. Miller davem@davemloft.net
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
*/
#include <linux/memblock.h>
@@ -34,16 +30,13 @@
void * __init prom_early_alloc(unsigned long size)
{
- unsigned long paddr = memblock_alloc(size, SMP_CACHE_BYTES);
- void *ret;
+ void *ret = memblock_alloc(size, SMP_CACHE_BYTES);
- if (!paddr) {
+ if (!ret) {
prom_printf("prom_early_alloc(%lu) failed\n", size);
prom_halt();
}
- ret = __va(paddr);
- memset(ret, 0, size);
prom_early_allocated += size;
return ret;
@@ -72,6 +65,7 @@
*/
static void __init sun4v_path_component(struct device_node *dp, char *tmp_buf)
{
+ const char *name = of_get_property(dp, "name", NULL);
struct linux_prom64_registers *regs;
struct property *rprop;
u32 high_bits, low_bits, type;
@@ -83,7 +77,7 @@
regs = rprop->value;
if (!of_node_is_root(dp->parent)) {
sprintf(tmp_buf, "%s@%x,%x",
- dp->name,
+ name,
(unsigned int) (regs->phys_addr >> 32UL),
(unsigned int) (regs->phys_addr & 0xffffffffUL));
return;
@@ -98,21 +92,22 @@
if (low_bits)
sprintf(tmp_buf, "%s@%s%x,%x",
- dp->name, prefix,
+ name, prefix,
high_bits, low_bits);
else
sprintf(tmp_buf, "%s@%s%x",
- dp->name,
+ name,
prefix,
high_bits);
} else if (type == 12) {
sprintf(tmp_buf, "%s@%x",
- dp->name, high_bits);
+ name, high_bits);
}
}
static void __init sun4u_path_component(struct device_node *dp, char *tmp_buf)
{
+ const char *name = of_get_property(dp, "name", NULL);
struct linux_prom64_registers *regs;
struct property *prop;
@@ -123,7 +118,7 @@
regs = prop->value;
if (!of_node_is_root(dp->parent)) {
sprintf(tmp_buf, "%s@%x,%x",
- dp->name,
+ name,
(unsigned int) (regs->phys_addr >> 32UL),
(unsigned int) (regs->phys_addr & 0xffffffffUL));
return;
@@ -139,7 +134,7 @@
mask = 0x7fffff;
sprintf(tmp_buf, "%s@%x,%x",
- dp->name,
+ name,
*(u32 *)prop->value,
(unsigned int) (regs->phys_addr & mask));
}
@@ -148,6 +143,7 @@
/* "name@slot,offset" */
static void __init sbus_path_component(struct device_node *dp, char *tmp_buf)
{
+ const char *name = of_get_property(dp, "name", NULL);
struct linux_prom_registers *regs;
struct property *prop;
@@ -157,7 +153,7 @@
regs = prop->value;
sprintf(tmp_buf, "%s@%x,%x",
- dp->name,
+ name,
regs->which_io,
regs->phys_addr);
}
@@ -165,6 +161,7 @@
/* "name@devnum[,func]" */
static void __init pci_path_component(struct device_node *dp, char *tmp_buf)
{
+ const char *name = of_get_property(dp, "name", NULL);
struct linux_prom_pci_registers *regs;
struct property *prop;
unsigned int devfn;
@@ -177,12 +174,12 @@
devfn = (regs->phys_hi >> 8) & 0xff;
if (devfn & 0x07) {
sprintf(tmp_buf, "%s@%x,%x",
- dp->name,
+ name,
devfn >> 3,
devfn & 0x07);
} else {
sprintf(tmp_buf, "%s@%x",
- dp->name,
+ name,
devfn >> 3);
}
}
@@ -190,6 +187,7 @@
/* "name@UPA_PORTID,offset" */
static void __init upa_path_component(struct device_node *dp, char *tmp_buf)
{
+ const char *name = of_get_property(dp, "name", NULL);
struct linux_prom64_registers *regs;
struct property *prop;
@@ -204,7 +202,7 @@
return;
sprintf(tmp_buf, "%s@%x,%x",
- dp->name,
+ name,
*(u32 *) prop->value,
(unsigned int) (regs->phys_addr & 0xffffffffUL));
}
@@ -212,6 +210,7 @@
/* "name@reg" */
static void __init vdev_path_component(struct device_node *dp, char *tmp_buf)
{
+ const char *name = of_get_property(dp, "name", NULL);
struct property *prop;
u32 *regs;
@@ -221,12 +220,13 @@
regs = prop->value;
- sprintf(tmp_buf, "%s@%x", dp->name, *regs);
+ sprintf(tmp_buf, "%s@%x", name, *regs);
}
/* "name@addrhi,addrlo" */
static void __init ebus_path_component(struct device_node *dp, char *tmp_buf)
{
+ const char *name = of_get_property(dp, "name", NULL);
struct linux_prom64_registers *regs;
struct property *prop;
@@ -237,7 +237,7 @@
regs = prop->value;
sprintf(tmp_buf, "%s@%x,%x",
- dp->name,
+ name,
(unsigned int) (regs->phys_addr >> 32UL),
(unsigned int) (regs->phys_addr & 0xffffffffUL));
}
@@ -245,6 +245,7 @@
/* "name@bus,addr" */
static void __init i2c_path_component(struct device_node *dp, char *tmp_buf)
{
+ const char *name = of_get_property(dp, "name", NULL);
struct property *prop;
u32 *regs;
@@ -258,12 +259,13 @@
* property of the i2c bus node etc. etc.
*/
sprintf(tmp_buf, "%s@%x,%x",
- dp->name, regs[0], regs[1]);
+ name, regs[0], regs[1]);
}
/* "name@reg0[,reg1]" */
static void __init usb_path_component(struct device_node *dp, char *tmp_buf)
{
+ const char *name = of_get_property(dp, "name", NULL);
struct property *prop;
u32 *regs;
@@ -275,16 +277,17 @@
if (prop->length == sizeof(u32) || regs[1] == 1) {
sprintf(tmp_buf, "%s@%x",
- dp->name, regs[0]);
+ name, regs[0]);
} else {
sprintf(tmp_buf, "%s@%x,%x",
- dp->name, regs[0], regs[1]);
+ name, regs[0], regs[1]);
}
}
/* "name@reg0reg1[,reg2reg3]" */
static void __init ieee1394_path_component(struct device_node *dp, char *tmp_buf)
{
+ const char *name = of_get_property(dp, "name", NULL);
struct property *prop;
u32 *regs;
@@ -296,10 +299,10 @@
if (regs[2] || regs[3]) {
sprintf(tmp_buf, "%s@%08x%08x,%04x%08x",
- dp->name, regs[0], regs[1], regs[2], regs[3]);
+ name, regs[0], regs[1], regs[2], regs[3]);
} else {
sprintf(tmp_buf, "%s@%08x%08x",
- dp->name, regs[0], regs[1]);
+ name, regs[0], regs[1]);
}
}
@@ -308,37 +311,37 @@
struct device_node *parent = dp->parent;
if (parent != NULL) {
- if (!strcmp(parent->type, "pci") ||
- !strcmp(parent->type, "pciex")) {
+ if (of_node_is_type(parent, "pci") ||
+ of_node_is_type(parent, "pciex")) {
pci_path_component(dp, tmp_buf);
return;
}
- if (!strcmp(parent->type, "sbus")) {
+ if (of_node_is_type(parent, "sbus")) {
sbus_path_component(dp, tmp_buf);
return;
}
- if (!strcmp(parent->type, "upa")) {
+ if (of_node_is_type(parent, "upa")) {
upa_path_component(dp, tmp_buf);
return;
}
- if (!strcmp(parent->type, "ebus")) {
+ if (of_node_is_type(parent, "ebus")) {
ebus_path_component(dp, tmp_buf);
return;
}
- if (!strcmp(parent->name, "usb") ||
- !strcmp(parent->name, "hub")) {
+ if (of_node_name_eq(parent, "usb") ||
+ of_node_name_eq(parent, "hub")) {
usb_path_component(dp, tmp_buf);
return;
}
- if (!strcmp(parent->type, "i2c")) {
+ if (of_node_is_type(parent, "i2c")) {
i2c_path_component(dp, tmp_buf);
return;
}
- if (!strcmp(parent->type, "firewire")) {
+ if (of_node_is_type(parent, "firewire")) {
ieee1394_path_component(dp, tmp_buf);
return;
}
- if (!strcmp(parent->type, "virtual-devices")) {
+ if (of_node_is_type(parent, "virtual-devices")) {
vdev_path_component(dp, tmp_buf);
return;
}
@@ -356,12 +359,13 @@
char * __init build_path_component(struct device_node *dp)
{
+ const char *name = of_get_property(dp, "name", NULL);
char tmp_buf[64], *n;
tmp_buf[0] = '\0';
__build_path_component(dp, tmp_buf);
if (tmp_buf[0] == '\0')
- strcpy(tmp_buf, dp->name);
+ strcpy(tmp_buf, name);
n = prom_early_alloc(strlen(tmp_buf) + 1);
strcpy(n, tmp_buf);
@@ -594,7 +598,6 @@
{
char *msg = "OF stdout device is: %s\n";
struct device_node *dp;
- const char *type;
phandle node;
of_console_path = prom_early_alloc(256);
@@ -617,13 +620,8 @@
}
dp = of_find_node_by_phandle(node);
- type = of_get_property(dp, "device_type", NULL);
- if (!type) {
- prom_printf("Console stdout lacks device_type property.\n");
- prom_halt();
- }
- if (strcmp(type, "display") && strcmp(type, "serial")) {
+ if (!of_node_is_type(dp, "display") && !of_node_is_type(dp, "serial")) {
prom_printf("Console device_type is neither display "
"nor serial.\n");
prom_halt();
--
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