From 01573e231f18eb2d99162747186f59511f56b64d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 08 Dec 2023 10:40:48 +0000
Subject: [PATCH] 移去rt
---
kernel/arch/openrisc/kernel/setup.c | 46 ++++++++++++++++++++--------------------------
1 files changed, 20 insertions(+), 26 deletions(-)
diff --git a/kernel/arch/openrisc/kernel/setup.c b/kernel/arch/openrisc/kernel/setup.c
index f3a7375..c6f9e7b 100644
--- a/kernel/arch/openrisc/kernel/setup.c
+++ b/kernel/arch/openrisc/kernel/setup.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* OpenRISC setup.c
*
@@ -8,11 +9,6 @@
* Modifications for the OpenRISC architecture:
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
- *
- * 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.
*
* This file handles the architecture-dependent parts of initialization
*/
@@ -30,18 +26,15 @@
#include <linux/delay.h>
#include <linux/console.h>
#include <linux/init.h>
-#include <linux/bootmem.h>
+#include <linux/memblock.h>
#include <linux/seq_file.h>
#include <linux/serial.h>
#include <linux/initrd.h>
#include <linux/of_fdt.h>
#include <linux/of.h>
-#include <linux/memblock.h>
#include <linux/device.h>
#include <asm/sections.h>
-#include <asm/segment.h>
-#include <asm/pgtable.h>
#include <asm/types.h>
#include <asm/setup.h>
#include <asm/io.h>
@@ -55,17 +48,12 @@
unsigned long ram_start_pfn;
unsigned long ram_end_pfn;
phys_addr_t memory_start, memory_end;
- struct memblock_region *region;
memory_end = memory_start = 0;
/* Find main memory where is the kernel, we assume its the only one */
- for_each_memblock(memory, region) {
- memory_start = region->base;
- memory_end = region->base + region->size;
- printk(KERN_INFO "%s: Memory: 0x%x-0x%x\n", __func__,
- memory_start, memory_end);
- }
+ memory_start = memblock_start_of_DRAM();
+ memory_end = memblock_end_of_DRAM();
if (!memory_end) {
panic("No memory!");
@@ -86,6 +74,16 @@
* RAM usable.
*/
memblock_reserve(__pa(_stext), _end - _stext);
+
+#ifdef CONFIG_BLK_DEV_INITRD
+ /* Then reserve the initrd, if any */
+ if (initrd_start && (initrd_end > initrd_start)) {
+ unsigned long aligned_start = ALIGN_DOWN(initrd_start, PAGE_SIZE);
+ unsigned long aligned_end = ALIGN(initrd_end, PAGE_SIZE);
+
+ memblock_reserve(__pa(aligned_start), aligned_end - aligned_start);
+ }
+#endif /* CONFIG_BLK_DEV_INITRD */
early_init_fdt_reserve_self();
early_init_fdt_scan_reserved_mem();
@@ -158,9 +156,8 @@
{
u32 hwid;
struct device_node *cpun;
- struct device_node *cpus = of_find_node_by_path("/cpus");
- for_each_available_child_of_node(cpus, cpun) {
+ for_each_of_cpu_node(cpun) {
if (of_property_read_u32(cpun, "reg", &hwid))
continue;
if (hwid == cpu)
@@ -302,13 +299,15 @@
init_mm.brk = (unsigned long)_end;
#ifdef CONFIG_BLK_DEV_INITRD
- initrd_start = (unsigned long)&__initrd_start;
- initrd_end = (unsigned long)&__initrd_end;
if (initrd_start == initrd_end) {
+ printk(KERN_INFO "Initial ramdisk not found\n");
initrd_start = 0;
initrd_end = 0;
+ } else {
+ printk(KERN_INFO "Initial ramdisk at: 0x%p (%lu bytes)\n",
+ (void *)(initrd_start), initrd_end - initrd_start);
+ initrd_below_start_ok = 1;
}
- initrd_below_start_ok = 1;
#endif
/* setup memblock allocator */
@@ -316,11 +315,6 @@
/* paging_init() sets up the MMU and marks all pages as reserved */
paging_init();
-
-#if defined(CONFIG_VT) && defined(CONFIG_DUMMY_CONSOLE)
- if (!conswitchp)
- conswitchp = &dummy_con;
-#endif
*cmdline_p = boot_command_line;
--
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