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authorPaul Burton <paul.burton@imgtec.com>2015-09-25 08:59:36 -0700
committerRalf Baechle <ralf@linux-mips.org>2015-09-27 14:14:00 +0200
commitdef3ab5d0a0fe53026c2495b054dcc46cf923dac (patch)
tree763d6919dbcf9d1c2eab295cb2c87daad5fcb193 /arch
parentd77d5ac9c9b5abf45aeb6e12930fab832e5c81d1 (diff)
MIPS: mm: compile maar_init unconditionally
maar_init was previously only compiled when CONFIG_NEED_MULTIPLE_NODES was not set, which has been fine since it is only called from the standard implementation of mem_init which has the same condition. In preparation for calling it from the SMP startup code on secondary CPUs, move maar_init outside of the #ifndef such that it is always compiled. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Markos Chandras <markos.chandras@imgtec.com> Cc: linux-mips@linux-mips.org Cc: Steven J. Hill <Steven.Hill@imgtec.com> Cc: David Hildenbrand <dahi@linux.vnet.ibm.com> Cc: linux-kernel@vger.kernel.org Cc: Ingo Molnar <mingo@kernel.org> Patchwork: https://patchwork.linux-mips.org/patch/11237/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/mips/mm/init.c126
1 files changed, 63 insertions, 63 deletions
diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c
index 66d0f49c5bec..074ac5459026 100644
--- a/arch/mips/mm/init.c
+++ b/arch/mips/mm/init.c
@@ -252,6 +252,69 @@ void __init fixrange_init(unsigned long start, unsigned long end,
#endif
}
+unsigned __weak platform_maar_init(unsigned num_pairs)
+{
+ struct maar_config cfg[BOOT_MEM_MAP_MAX];
+ unsigned i, num_configured, num_cfg = 0;
+ phys_addr_t skip;
+
+ for (i = 0; i < boot_mem_map.nr_map; i++) {
+ switch (boot_mem_map.map[i].type) {
+ case BOOT_MEM_RAM:
+ case BOOT_MEM_INIT_RAM:
+ break;
+ default:
+ continue;
+ }
+
+ skip = 0x10000 - (boot_mem_map.map[i].addr & 0xffff);
+
+ cfg[num_cfg].lower = boot_mem_map.map[i].addr;
+ cfg[num_cfg].lower += skip;
+
+ cfg[num_cfg].upper = cfg[num_cfg].lower;
+ cfg[num_cfg].upper += boot_mem_map.map[i].size - 1;
+ cfg[num_cfg].upper -= skip;
+
+ cfg[num_cfg].attrs = MIPS_MAAR_S;
+ num_cfg++;
+ }
+
+ num_configured = maar_config(cfg, num_cfg, num_pairs);
+ if (num_configured < num_cfg)
+ pr_warn("Not enough MAAR pairs (%u) for all bootmem regions (%u)\n",
+ num_pairs, num_cfg);
+
+ return num_configured;
+}
+
+static void maar_init(void)
+{
+ unsigned num_maars, used, i;
+
+ if (!cpu_has_maar)
+ return;
+
+ /* Detect the number of MAARs */
+ write_c0_maari(~0);
+ back_to_back_c0_hazard();
+ num_maars = read_c0_maari() + 1;
+
+ /* MAARs should be in pairs */
+ WARN_ON(num_maars % 2);
+
+ /* Configure the required MAARs */
+ used = platform_maar_init(num_maars / 2);
+
+ /* Disable any further MAARs */
+ for (i = (used * 2); i < num_maars; i++) {
+ write_c0_maari(i);
+ back_to_back_c0_hazard();
+ write_c0_maar(0);
+ back_to_back_c0_hazard();
+ }
+}
+
#ifndef CONFIG_NEED_MULTIPLE_NODES
int page_is_ram(unsigned long pagenr)
{
@@ -334,69 +397,6 @@ static inline void mem_init_free_highmem(void)
#endif
}
-unsigned __weak platform_maar_init(unsigned num_pairs)
-{
- struct maar_config cfg[BOOT_MEM_MAP_MAX];
- unsigned i, num_configured, num_cfg = 0;
- phys_addr_t skip;
-
- for (i = 0; i < boot_mem_map.nr_map; i++) {
- switch (boot_mem_map.map[i].type) {
- case BOOT_MEM_RAM:
- case BOOT_MEM_INIT_RAM:
- break;
- default:
- continue;
- }
-
- skip = 0x10000 - (boot_mem_map.map[i].addr & 0xffff);
-
- cfg[num_cfg].lower = boot_mem_map.map[i].addr;
- cfg[num_cfg].lower += skip;
-
- cfg[num_cfg].upper = cfg[num_cfg].lower;
- cfg[num_cfg].upper += boot_mem_map.map[i].size - 1;
- cfg[num_cfg].upper -= skip;
-
- cfg[num_cfg].attrs = MIPS_MAAR_S;
- num_cfg++;
- }
-
- num_configured = maar_config(cfg, num_cfg, num_pairs);
- if (num_configured < num_cfg)
- pr_warn("Not enough MAAR pairs (%u) for all bootmem regions (%u)\n",
- num_pairs, num_cfg);
-
- return num_configured;
-}
-
-static void maar_init(void)
-{
- unsigned num_maars, used, i;
-
- if (!cpu_has_maar)
- return;
-
- /* Detect the number of MAARs */
- write_c0_maari(~0);
- back_to_back_c0_hazard();
- num_maars = read_c0_maari() + 1;
-
- /* MAARs should be in pairs */
- WARN_ON(num_maars % 2);
-
- /* Configure the required MAARs */
- used = platform_maar_init(num_maars / 2);
-
- /* Disable any further MAARs */
- for (i = (used * 2); i < num_maars; i++) {
- write_c0_maari(i);
- back_to_back_c0_hazard();
- write_c0_maar(0);
- back_to_back_c0_hazard();
- }
-}
-
void __init mem_init(void)
{
#ifdef CONFIG_HIGHMEM