From 61598093bbdd283a7edc367d900f223070ead8d2 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:43:03 +0000
Subject: [PATCH] add ax88772C AX88772C_eeprom_tools
---
kernel/arch/hexagon/mm/init.c | 67 ++++++---------------------------
1 files changed, 13 insertions(+), 54 deletions(-)
diff --git a/kernel/arch/hexagon/mm/init.c b/kernel/arch/hexagon/mm/init.c
index 1495d45..f2e6c86 100644
--- a/kernel/arch/hexagon/mm/init.c
+++ b/kernel/arch/hexagon/mm/init.c
@@ -1,26 +1,13 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Memory subsystem initialization for Hexagon
*
* Copyright (c) 2010-2013, The Linux Foundation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 and
- * only version 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
*/
#include <linux/init.h>
#include <linux/mm.h>
-#include <linux/bootmem.h>
+#include <linux/memblock.h>
#include <asm/atomic.h>
#include <linux/highmem.h>
#include <asm/tlb.h>
@@ -67,7 +54,7 @@
void __init mem_init(void)
{
/* No idea where this is actually declared. Seems to evade LXR. */
- free_all_bootmem();
+ memblock_free_all();
mem_init_print_info(NULL);
/*
@@ -82,29 +69,6 @@
* kernel segment table's physical address.
*/
init_mm.context.ptbase = __pa(init_mm.pgd);
-}
-
-/*
- * free_initmem - frees memory used by stuff declared with __init
- *
- * Todo: free pages between __init_begin and __init_end; possibly
- * some devtree related stuff as well.
- */
-void __ref free_initmem(void)
-{
-}
-
-/*
- * free_initrd_mem - frees... initrd memory.
- * @start - start of init memory
- * @end - end of init memory
- *
- * Apparently has to be passed the address of the initrd memory.
- *
- * Wrapped by #ifdef CONFIG_BLKDEV_INITRD
- */
-void free_initrd_mem(unsigned long start, unsigned long end)
-{
}
void sync_icache_dcache(pte_t pte)
@@ -127,7 +91,7 @@
*/
void __init paging_init(void)
{
- unsigned long zones_sizes[MAX_NR_ZONES] = {0, };
+ unsigned long max_zone_pfn[MAX_NR_ZONES] = {0, };
/*
* This is not particularly well documented anywhere, but
@@ -137,9 +101,9 @@
* adjust accordingly.
*/
- zones_sizes[ZONE_NORMAL] = max_low_pfn;
+ max_zone_pfn[ZONE_NORMAL] = max_low_pfn;
- free_area_init(zones_sizes); /* sets up the zonelists and mem_map */
+ free_area_init(max_zone_pfn); /* sets up the zonelists and mem_map */
/*
* Start of high memory area. Will probably need something more
@@ -176,7 +140,6 @@
void __init setup_arch_memory(void)
{
- int bootmap_size;
/* XXX Todo: this probably should be cleaned up */
u32 *segtable = (u32 *) &swapper_pg_dir[0];
u32 *segtable_end;
@@ -195,18 +158,22 @@
bootmem_lastpg = PFN_DOWN((bootmem_lastpg << PAGE_SHIFT) &
~((BIG_KERNEL_PAGE_SIZE) - 1));
+ memblock_add(PHYS_OFFSET,
+ (bootmem_lastpg - ARCH_PFN_OFFSET) << PAGE_SHIFT);
+
+ /* Reserve kernel text/data/bss */
+ memblock_reserve(PHYS_OFFSET,
+ (bootmem_startpg - ARCH_PFN_OFFSET) << PAGE_SHIFT);
/*
* Reserve the top DMA_RESERVE bytes of RAM for DMA (uncached)
* memory allocation
*/
-
max_low_pfn = bootmem_lastpg - PFN_DOWN(DMA_RESERVED_BYTES);
min_low_pfn = ARCH_PFN_OFFSET;
- bootmap_size = init_bootmem_node(NODE_DATA(0), bootmem_startpg, min_low_pfn, max_low_pfn);
+ memblock_reserve(PFN_PHYS(max_low_pfn), DMA_RESERVED_BYTES);
printk(KERN_INFO "bootmem_startpg: 0x%08lx\n", bootmem_startpg);
printk(KERN_INFO "bootmem_lastpg: 0x%08lx\n", bootmem_lastpg);
- printk(KERN_INFO "bootmap_size: %d\n", bootmap_size);
printk(KERN_INFO "min_low_pfn: 0x%08lx\n", min_low_pfn);
printk(KERN_INFO "max_low_pfn: 0x%08lx\n", max_low_pfn);
@@ -255,14 +222,6 @@
__HVM_PDE_S_4KB;
printk(KERN_INFO "*segtable = 0x%08x\n", *segtable);
#endif
-
- /*
- * Free all the memory that wasn't taken up by the bootmap, the DMA
- * reserve, or kernel itself.
- */
- free_bootmem(PFN_PHYS(bootmem_startpg) + bootmap_size,
- PFN_PHYS(bootmem_lastpg - bootmem_startpg) - bootmap_size -
- DMA_RESERVED_BYTES);
/*
* The bootmem allocator seemingly just lives to feed memory
--
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