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_32.c | 76 +++++++++++++++----------------------
1 files changed, 31 insertions(+), 45 deletions(-)
diff --git a/kernel/arch/sparc/kernel/prom_32.c b/kernel/arch/sparc/kernel/prom_32.c
index b51cbb9..3df960c 100644
--- a/kernel/arch/sparc/kernel/prom_32.c
+++ b/kernel/arch/sparc/kernel/prom_32.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Procedures for creating, accessing and interpreting the device tree.
*
@@ -8,18 +9,13 @@
* {engebret|bergner}@us.ibm.com
*
* Adapted for sparc32 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/kernel.h>
#include <linux/types.h>
#include <linux/string.h>
#include <linux/mm.h>
-#include <linux/bootmem.h>
+#include <linux/memblock.h>
#include <asm/prom.h>
#include <asm/oplib.h>
@@ -32,9 +28,9 @@
{
void *ret;
- ret = __alloc_bootmem(size, SMP_CACHE_BYTES, 0UL);
- if (ret != NULL)
- memset(ret, 0, size);
+ ret = memblock_alloc(size, SMP_CACHE_BYTES);
+ if (!ret)
+ panic("%s: Failed to allocate %lu bytes\n", __func__, size);
prom_early_allocated += size;
@@ -60,6 +56,7 @@
*/
static void __init sparc32_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 *rprop;
@@ -69,13 +66,14 @@
regs = rprop->value;
sprintf(tmp_buf, "%s@%x,%x",
- dp->name,
+ name,
regs->which_io, regs->phys_addr);
}
/* "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;
@@ -85,7 +83,7 @@
regs = prop->value;
sprintf(tmp_buf, "%s@%x,%x",
- dp->name,
+ name,
regs->which_io,
regs->phys_addr);
}
@@ -93,6 +91,7 @@
/* "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;
@@ -105,12 +104,12 @@
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);
}
}
@@ -118,6 +117,7 @@
/* "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_prom_registers *regs;
struct property *prop;
@@ -128,15 +128,17 @@
regs = prop->value;
sprintf(tmp_buf, "%s@%x,%x",
- dp->name,
+ name,
regs->which_io, regs->phys_addr);
}
-/* "name:vendor:device@irq,addrlo" */
+/* "name@irq,addrlo" */
static void __init ambapp_path_component(struct device_node *dp, char *tmp_buf)
{
+ const char *name = of_get_property(dp, "name", NULL);
struct amba_prom_registers *regs;
- unsigned int *intr, *device, *vendor, reg0;
+ unsigned int *intr;
+ unsigned int reg0;
struct property *prop;
int interrupt = 0;
@@ -158,18 +160,7 @@
else
intr = prop->value;
- prop = of_find_property(dp, "vendor", NULL);
- if (!prop)
- return;
- vendor = prop->value;
- prop = of_find_property(dp, "device", NULL);
- if (!prop)
- return;
- device = prop->value;
-
- sprintf(tmp_buf, "%s:%d:%d@%x,%x",
- dp->name, *vendor, *device,
- *intr, reg0);
+ sprintf(tmp_buf, "%s@%x,%x", name, *intr, reg0);
}
static void __init __build_path_component(struct device_node *dp, char *tmp_buf)
@@ -177,14 +168,14 @@
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"))
return pci_path_component(dp, tmp_buf);
- if (!strcmp(parent->type, "sbus"))
+ if (of_node_is_type(parent, "sbus"))
return sbus_path_component(dp, tmp_buf);
- if (!strcmp(parent->type, "ebus"))
+ if (of_node_is_type(parent, "ebus"))
return ebus_path_component(dp, tmp_buf);
- if (!strcmp(parent->type, "ambapp"))
+ if (of_node_is_type(parent, "ambapp"))
return ambapp_path_component(dp, tmp_buf);
/* "isa" is handled with platform naming */
@@ -196,12 +187,13 @@
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);
@@ -232,7 +224,7 @@
case PROMDEV_TTYB:
skip = 1;
- /* FALLTHRU */
+ fallthrough;
case PROMDEV_TTYA:
type = "serial";
@@ -255,7 +247,7 @@
}
of_console_device = dp;
- strcpy(of_console_path, dp->full_name);
+ sprintf(of_console_path, "%pOF", dp);
if (!strcmp(type, "serial")) {
strcat(of_console_path,
(skip ? ":b" : ":a"));
@@ -278,15 +270,9 @@
prom_halt();
}
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();
@@ -295,7 +281,7 @@
of_console_device = dp;
if (prom_vers == PROM_V2) {
- strcpy(of_console_path, dp->full_name);
+ sprintf(of_console_path, "%pOF", dp);
switch (*romvec->pv_stdout) {
case PROMDEV_TTYA:
strcat(of_console_path, ":a");
--
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