hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

[ARM] mm 1: Combine mem_type domain into prot_* at init time 

Rather than combining the domain for a particular memory type with
the protection information each time we want to use it, do so when
we fix up the mem_type array at initialisation time.

Rename struct mem_types to be mem_type - each structure is one
memory type description, not several.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2007-04-21 09:59:44 +01:00 committed by Russell King
parent 235b185ce4
commit 2497f0a812
1 changed files with 12 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
arch/arm/mm/mmu.c
View File

@ -176,14 +176,14 @@ void adjust_cr(unsigned long mask, unsigned long set)
} }
#endif #endif
struct mem_types { struct mem_type {
unsigned int prot_pte; unsigned int prot_pte;
unsigned int prot_l1; unsigned int prot_l1;
unsigned int prot_sect; unsigned int prot_sect;
unsigned int domain; unsigned int domain;
}; };
static struct mem_types mem_types[] __initdata = { static struct mem_type mem_types[] __initdata = {
[MT_DEVICE] = { [MT_DEVICE] = {
.prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY | .prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY |
L_PTE_WRITE, L_PTE_WRITE,
@ -368,6 +368,14 @@ static void __init build_mem_type_table(void)
} }
printk("Memory policy: ECC %sabled, Data cache %s\n", printk("Memory policy: ECC %sabled, Data cache %s\n",
ecc_mask ? "en" : "dis", cp->policy); ecc_mask ? "en" : "dis", cp->policy);
for (i = 0; i < ARRAY_SIZE(mem_types); i++) {
struct mem_type *t = &mem_types[i];
if (t->prot_l1)
t->prot_l1 |= PMD_DOMAIN(t->domain);
if (t->prot_sect)
t->prot_sect |= PMD_DOMAIN(t->domain);
}
} }
#define vectors_base() (vectors_high() ? 0xffff0000 : 0) #define vectors_base() (vectors_high() ? 0xffff0000 : 0)
@ -458,8 +466,8 @@ void __init create_mapping(struct map_desc *md)
domain = mem_types[md->type].domain; domain = mem_types[md->type].domain;
prot_pte = __pgprot(mem_types[md->type].prot_pte); prot_pte = __pgprot(mem_types[md->type].prot_pte);
prot_l1 = mem_types[md->type].prot_l1 | PMD_DOMAIN(domain); prot_l1 = mem_types[md->type].prot_l1;
prot_sect = mem_types[md->type].prot_sect | PMD_DOMAIN(domain); prot_sect = mem_types[md->type].prot_sect;
/* /*
* Catch 36-bit addresses * Catch 36-bit addresses