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-rw-r--r--arch/sparc64/mm/init.c95
1 files changed, 21 insertions, 74 deletions
diff --git a/arch/sparc64/mm/init.c b/arch/sparc64/mm/init.c
index e726c45645f..f37078d9640 100644
--- a/arch/sparc64/mm/init.c
+++ b/arch/sparc64/mm/init.c
@@ -46,6 +46,7 @@
#include <asm/prom.h>
#include <asm/sstate.h>
#include <asm/mdesc.h>
+#include <asm/cpudata.h>
#define MAX_PHYS_ADDRESS (1UL << 42UL)
#define KPTE_BITMAP_CHUNK_SZ (256UL * 1024UL * 1024UL)
@@ -166,7 +167,7 @@ unsigned long sparc64_kern_pri_context __read_mostly;
unsigned long sparc64_kern_pri_nuc_bits __read_mostly;
unsigned long sparc64_kern_sec_context __read_mostly;
-int bigkernel = 0;
+int num_kernel_image_mappings;
#ifdef CONFIG_DEBUG_DCFLUSH
atomic_t dcpage_flushes = ATOMIC_INIT(0);
@@ -572,7 +573,7 @@ static unsigned long kern_large_tte(unsigned long paddr);
static void __init remap_kernel(void)
{
unsigned long phys_page, tte_vaddr, tte_data;
- int tlb_ent = sparc64_highest_locked_tlbent();
+ int i, tlb_ent = sparc64_highest_locked_tlbent();
tte_vaddr = (unsigned long) KERNBASE;
phys_page = (prom_boot_mapping_phys_low >> 22UL) << 22UL;
@@ -582,27 +583,20 @@ static void __init remap_kernel(void)
/* Now lock us into the TLBs via Hypervisor or OBP. */
if (tlb_type == hypervisor) {
- hypervisor_tlb_lock(tte_vaddr, tte_data, HV_MMU_DMMU);
- hypervisor_tlb_lock(tte_vaddr, tte_data, HV_MMU_IMMU);
- if (bigkernel) {
- tte_vaddr += 0x400000;
- tte_data += 0x400000;
+ for (i = 0; i < num_kernel_image_mappings; i++) {
hypervisor_tlb_lock(tte_vaddr, tte_data, HV_MMU_DMMU);
hypervisor_tlb_lock(tte_vaddr, tte_data, HV_MMU_IMMU);
+ tte_vaddr += 0x400000;
+ tte_data += 0x400000;
}
} else {
- prom_dtlb_load(tlb_ent, tte_data, tte_vaddr);
- prom_itlb_load(tlb_ent, tte_data, tte_vaddr);
- if (bigkernel) {
- tlb_ent -= 1;
- prom_dtlb_load(tlb_ent,
- tte_data + 0x400000,
- tte_vaddr + 0x400000);
- prom_itlb_load(tlb_ent,
- tte_data + 0x400000,
- tte_vaddr + 0x400000);
+ for (i = 0; i < num_kernel_image_mappings; i++) {
+ prom_dtlb_load(tlb_ent - i, tte_data, tte_vaddr);
+ prom_itlb_load(tlb_ent - i, tte_data, tte_vaddr);
+ tte_vaddr += 0x400000;
+ tte_data += 0x400000;
}
- sparc64_highest_unlocked_tlb_ent = tlb_ent - 1;
+ sparc64_highest_unlocked_tlb_ent = tlb_ent - i;
}
if (tlb_type == cheetah_plus) {
sparc64_kern_pri_context = (CTX_CHEETAH_PLUS_CTX0 |
@@ -618,9 +612,9 @@ static void __init inherit_prom_mappings(void)
read_obp_translations();
/* Now fixup OBP's idea about where we really are mapped. */
- prom_printf("Remapping the kernel... ");
+ printk("Remapping the kernel... ");
remap_kernel();
- prom_printf("done.\n");
+ printk("done.\n");
}
void prom_world(int enter)
@@ -739,11 +733,6 @@ static unsigned long __init choose_bootmap_pfn(unsigned long start_pfn,
avoid_end = PAGE_ALIGN(initrd_end);
#endif
-#ifdef CONFIG_DEBUG_BOOTMEM
- prom_printf("choose_bootmap_pfn: kern[%lx:%lx] avoid[%lx:%lx]\n",
- kern_base, PAGE_ALIGN(kern_base + kern_size),
- avoid_start, avoid_end);
-#endif
for (i = 0; i < pavail_ents; i++) {
unsigned long start, end;
@@ -777,10 +766,6 @@ static unsigned long __init choose_bootmap_pfn(unsigned long start_pfn,
}
/* OK, it doesn't overlap anything, use it. */
-#ifdef CONFIG_DEBUG_BOOTMEM
- prom_printf("choose_bootmap_pfn: Using %lx [%lx]\n",
- start >> PAGE_SHIFT, start);
-#endif
return start >> PAGE_SHIFT;
}
}
@@ -920,10 +905,6 @@ static unsigned long __init bootmem_init(unsigned long *pages_avail,
unsigned long bootmap_pfn, bytes_avail, size;
int i;
-#ifdef CONFIG_DEBUG_BOOTMEM
- prom_printf("bootmem_init: Scan pavail, ");
-#endif
-
bytes_avail = 0UL;
for (i = 0; i < pavail_ents; i++) {
end_of_phys_memory = pavail[i].phys_addr +
@@ -970,33 +951,20 @@ static unsigned long __init bootmem_init(unsigned long *pages_avail,
bootmap_pfn = choose_bootmap_pfn(min_low_pfn, end_pfn);
-#ifdef CONFIG_DEBUG_BOOTMEM
- prom_printf("init_bootmem(min[%lx], bootmap[%lx], max[%lx])\n",
- min_low_pfn, bootmap_pfn, max_low_pfn);
-#endif
bootmap_size = init_bootmem_node(NODE_DATA(0), bootmap_pfn,
min_low_pfn, end_pfn);
/* Now register the available physical memory with the
* allocator.
*/
- for (i = 0; i < pavail_ents; i++) {
-#ifdef CONFIG_DEBUG_BOOTMEM
- prom_printf("free_bootmem(pavail:%d): base[%lx] size[%lx]\n",
- i, pavail[i].phys_addr, pavail[i].reg_size);
-#endif
+ for (i = 0; i < pavail_ents; i++)
free_bootmem(pavail[i].phys_addr, pavail[i].reg_size);
- }
#ifdef CONFIG_BLK_DEV_INITRD
if (initrd_start) {
size = initrd_end - initrd_start;
/* Reserve the initrd image area. */
-#ifdef CONFIG_DEBUG_BOOTMEM
- prom_printf("reserve_bootmem(initrd): base[%llx] size[%lx]\n",
- initrd_start, initrd_end);
-#endif
reserve_bootmem(initrd_start, size, BOOTMEM_DEFAULT);
initrd_start += PAGE_OFFSET;
@@ -1004,9 +972,6 @@ static unsigned long __init bootmem_init(unsigned long *pages_avail,
}
#endif
/* Reserve the kernel text/data/bss. */
-#ifdef CONFIG_DEBUG_BOOTMEM
- prom_printf("reserve_bootmem(kernel): base[%lx] size[%lx]\n", kern_base, kern_size);
-#endif
reserve_bootmem(kern_base, kern_size, BOOTMEM_DEFAULT);
*pages_avail -= PAGE_ALIGN(kern_size) >> PAGE_SHIFT;
@@ -1020,10 +985,6 @@ static unsigned long __init bootmem_init(unsigned long *pages_avail,
* in free_all_bootmem.
*/
size = bootmap_size;
-#ifdef CONFIG_DEBUG_BOOTMEM
- prom_printf("reserve_bootmem(bootmap): base[%lx] size[%lx]\n",
- (bootmap_pfn << PAGE_SHIFT), size);
-#endif
reserve_bootmem((bootmap_pfn << PAGE_SHIFT), size, BOOTMEM_DEFAULT);
for (i = 0; i < pavail_ents; i++) {
@@ -1031,10 +992,6 @@ static unsigned long __init bootmem_init(unsigned long *pages_avail,
start_pfn = pavail[i].phys_addr >> PAGE_SHIFT;
end_pfn = (start_pfn + (pavail[i].reg_size >> PAGE_SHIFT));
-#ifdef CONFIG_DEBUG_BOOTMEM
- prom_printf("memory_present(0, %lx, %lx)\n",
- start_pfn, end_pfn);
-#endif
memory_present(0, start_pfn, end_pfn);
}
@@ -1047,7 +1004,8 @@ static struct linux_prom64_registers pall[MAX_BANKS] __initdata;
static int pall_ents __initdata;
#ifdef CONFIG_DEBUG_PAGEALLOC
-static unsigned long kernel_map_range(unsigned long pstart, unsigned long pend, pgprot_t prot)
+static unsigned long __ref kernel_map_range(unsigned long pstart,
+ unsigned long pend, pgprot_t prot)
{
unsigned long vstart = PAGE_OFFSET + pstart;
unsigned long vend = PAGE_OFFSET + pend;
@@ -1316,10 +1274,6 @@ void __cpuinit sun4v_ktsb_register(void)
/* paging_init() sets up the page tables */
-extern void cheetah_ecache_flush_init(void);
-extern void sun4v_patch_tlb_handlers(void);
-
-extern void cpu_probe(void);
extern void central_probe(void);
static unsigned long last_valid_pfn;
@@ -1388,12 +1342,9 @@ void __init paging_init(void)
shift = kern_base + PAGE_OFFSET - ((unsigned long)KERNBASE);
real_end = (unsigned long)_end;
- if ((real_end > ((unsigned long)KERNBASE + 0x400000)))
- bigkernel = 1;
- if ((real_end > ((unsigned long)KERNBASE + 0x800000))) {
- prom_printf("paging_init: Kernel > 8MB, too large.\n");
- prom_halt();
- }
+ num_kernel_image_mappings = DIV_ROUND_UP(real_end - KERNBASE, 1 << 22);
+ printk("Kernel: Using %d locked TLB entries for main kernel image.\n",
+ num_kernel_image_mappings);
/* Set kernel pgd to upper alias so physical page computations
* work.
@@ -1451,7 +1402,7 @@ void __init paging_init(void)
zholes_size);
}
- prom_printf("Booting Linux...\n");
+ printk("Booting Linux...\n");
central_probe();
cpu_probe();
@@ -1549,10 +1500,6 @@ void __init mem_init(void)
high_memory = __va(last_valid_pfn << PAGE_SHIFT);
-#ifdef CONFIG_DEBUG_BOOTMEM
- prom_printf("mem_init: Calling free_all_bootmem().\n");
-#endif
-
/* We subtract one to account for the mem_map_zero page
* allocated below.
*/
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-02-12 00:35:19 +0000