From 04dd17822334871b23ea2862f7798fb0e0007777 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 11 May 2024 08:53:19 +0000
Subject: [PATCH] change otg to host mode
---
kernel/arch/nds32/mm/init.c | 70 ++++++++++++++---------------------
1 files changed, 28 insertions(+), 42 deletions(-)
diff --git a/kernel/arch/nds32/mm/init.c b/kernel/arch/nds32/mm/init.c
index c713d2a..fa86f7b 100644
--- a/kernel/arch/nds32/mm/init.c
+++ b/kernel/arch/nds32/mm/init.c
@@ -7,12 +7,11 @@
#include <linux/errno.h>
#include <linux/swap.h>
#include <linux/init.h>
-#include <linux/bootmem.h>
+#include <linux/memblock.h>
#include <linux/mman.h>
#include <linux/nodemask.h>
#include <linux/initrd.h>
#include <linux/highmem.h>
-#include <linux/memblock.h>
#include <asm/sections.h>
#include <asm/setup.h>
@@ -22,8 +21,6 @@
DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
DEFINE_SPINLOCK(anon_alias_lock);
extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
-extern unsigned long phys_initrd_start;
-extern unsigned long phys_initrd_size;
/*
* empty_zero_page is a special page that is used for
@@ -34,16 +31,13 @@
static void __init zone_sizes_init(void)
{
- unsigned long zones_size[MAX_NR_ZONES];
+ unsigned long max_zone_pfn[MAX_NR_ZONES] = { 0 };
- /* Clear the zone sizes */
- memset(zones_size, 0, sizeof(zones_size));
-
- zones_size[ZONE_NORMAL] = max_low_pfn;
+ max_zone_pfn[ZONE_NORMAL] = max_low_pfn;
#ifdef CONFIG_HIGHMEM
- zones_size[ZONE_HIGHMEM] = max_pfn;
+ max_zone_pfn[ZONE_HIGHMEM] = max_pfn;
#endif
- free_area_init(zones_size);
+ free_area_init(max_zone_pfn);
}
@@ -57,6 +51,7 @@
{
unsigned long v, p, e;
pgd_t *pge;
+ p4d_t *p4e;
pud_t *pue;
pmd_t *pme;
pte_t *pte;
@@ -72,7 +67,8 @@
while (p < e) {
int j;
- pue = pud_offset(pge, v);
+ p4e = p4d_offset(pge, v);
+ pue = pud_offset(p4e, v);
pme = pmd_offset(pue, v);
if ((u32) pue != (u32) pge || (u32) pme != (u32) pge) {
@@ -81,8 +77,10 @@
}
/* Alloc one page for holding PTE's... */
- pte = (pte_t *) __va(memblock_alloc(PAGE_SIZE, PAGE_SIZE));
- memset(pte, 0, PAGE_SIZE);
+ pte = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
+ if (!pte)
+ panic("%s: Failed to allocate %lu bytes align=0x%lx\n",
+ __func__, PAGE_SIZE, PAGE_SIZE);
set_pmd(pme, __pmd(__pa(pte) + _PAGE_KERNEL_TABLE));
/* Fill the newly allocated page with PTE'S */
@@ -100,8 +98,6 @@
static void __init fixedrange_init(void)
{
unsigned long vaddr;
- pgd_t *pgd;
- pud_t *pud;
pmd_t *pmd;
#ifdef CONFIG_HIGHMEM
pte_t *pte;
@@ -111,11 +107,11 @@
* Fixed mappings:
*/
vaddr = __fix_to_virt(__end_of_fixed_addresses - 1);
- pgd = swapper_pg_dir + pgd_index(vaddr);
- pud = pud_offset(pgd, vaddr);
- pmd = pmd_offset(pud, vaddr);
- fixmap_pmd_p = (pmd_t *) __va(memblock_alloc(PAGE_SIZE, PAGE_SIZE));
- memset(fixmap_pmd_p, 0, PAGE_SIZE);
+ pmd = pmd_off_k(vaddr);
+ fixmap_pmd_p = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
+ if (!fixmap_pmd_p)
+ panic("%s: Failed to allocate %lu bytes align=0x%lx\n",
+ __func__, PAGE_SIZE, PAGE_SIZE);
set_pmd(pmd, __pmd(__pa(fixmap_pmd_p) + _PAGE_KERNEL_TABLE));
#ifdef CONFIG_HIGHMEM
@@ -124,11 +120,11 @@
*/
vaddr = PKMAP_BASE;
- pgd = swapper_pg_dir + pgd_index(vaddr);
- pud = pud_offset(pgd, vaddr);
- pmd = pmd_offset(pud, vaddr);
- pte = (pte_t *) __va(memblock_alloc(PAGE_SIZE, PAGE_SIZE));
- memset(pte, 0, PAGE_SIZE);
+ pmd = pmd_off_k(vaddr);
+ pte = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
+ if (!pte)
+ panic("%s: Failed to allocate %lu bytes align=0x%lx\n",
+ __func__, PAGE_SIZE, PAGE_SIZE);
set_pmd(pmd, __pmd(__pa(pte) + _PAGE_KERNEL_TABLE));
pkmap_page_table = pte;
#endif /* CONFIG_HIGHMEM */
@@ -153,8 +149,10 @@
fixedrange_init();
/* allocate space for empty_zero_page */
- zero_page = __va(memblock_alloc(PAGE_SIZE, PAGE_SIZE));
- memset(zero_page, 0, PAGE_SIZE);
+ zero_page = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
+ if (!zero_page)
+ panic("%s: Failed to allocate %lu bytes align=0x%lx\n",
+ __func__, PAGE_SIZE, PAGE_SIZE);
zone_sizes_init();
empty_zero_page = virt_to_page(zero_page);
@@ -192,7 +190,7 @@
free_highmem();
/* this will put all low memory onto the freelists */
- free_all_bootmem();
+ memblock_free_all();
mem_init_print_info(NULL);
pr_info("virtual kernel memory layout:\n"
@@ -247,18 +245,6 @@
return;
}
-void free_initmem(void)
-{
- free_initmem_default(-1);
-}
-
-#ifdef CONFIG_BLK_DEV_INITRD
-void free_initrd_mem(unsigned long start, unsigned long end)
-{
- free_reserved_area((void *)start, (void *)end, -1, "initrd");
-}
-#endif
-
void __set_fixmap(enum fixed_addresses idx,
phys_addr_t phys, pgprot_t flags)
{
@@ -267,7 +253,7 @@
BUG_ON(idx <= FIX_HOLE || idx >= __end_of_fixed_addresses);
- pte = (pte_t *)&fixmap_pmd_p[pte_index(addr)];;
+ pte = (pte_t *)&fixmap_pmd_p[pte_index(addr)];
if (pgprot_val(flags)) {
set_pte(pte, pfn_pte(phys >> PAGE_SHIFT, flags));
--
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