From: Christophe Leroy <christophe.leroy@c-s.fr>
Date: Thu, 21 Feb 2019 19:08:38 +0000 (+0000)
Subject: powerpc/mm/32: add base address to mmu_mapin_ram()
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=14e609d693ef678a211a8dcd0e13463a2581ed85;p=openwrt%2Fstaging%2Fblogic.git

powerpc/mm/32: add base address to mmu_mapin_ram()

At the time being, mmu_mapin_ram() always maps RAM from the beginning.
But some platforms like the WII have to map a second block of RAM.

This patch adds to mmu_mapin_ram() the base address of the block.
At the moment, only base address 0 is supported.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
---

diff --git a/arch/powerpc/mm/40x_mmu.c b/arch/powerpc/mm/40x_mmu.c
index 61ac468c87c6..b9cf6f8764b0 100644
--- a/arch/powerpc/mm/40x_mmu.c
+++ b/arch/powerpc/mm/40x_mmu.c
@@ -93,7 +93,7 @@ void __init MMU_init_hw(void)
 #define LARGE_PAGE_SIZE_16M	(1<<24)
 #define LARGE_PAGE_SIZE_4M	(1<<22)
 
-unsigned long __init mmu_mapin_ram(unsigned long top)
+unsigned long __init mmu_mapin_ram(unsigned long base, unsigned long top)
 {
 	unsigned long v, s, mapped;
 	phys_addr_t p;
diff --git a/arch/powerpc/mm/44x_mmu.c b/arch/powerpc/mm/44x_mmu.c
index ea2b9af08a48..aad127acdbaa 100644
--- a/arch/powerpc/mm/44x_mmu.c
+++ b/arch/powerpc/mm/44x_mmu.c
@@ -170,7 +170,7 @@ void __init MMU_init_hw(void)
 	flush_instruction_cache();
 }
 
-unsigned long __init mmu_mapin_ram(unsigned long top)
+unsigned long __init mmu_mapin_ram(unsigned long base, unsigned long top)
 {
 	unsigned long addr;
 	unsigned long memstart = memstart_addr & ~(PPC_PIN_SIZE - 1);
diff --git a/arch/powerpc/mm/8xx_mmu.c b/arch/powerpc/mm/8xx_mmu.c
index e95196fdc92b..ce11cbaa25d8 100644
--- a/arch/powerpc/mm/8xx_mmu.c
+++ b/arch/powerpc/mm/8xx_mmu.c
@@ -99,7 +99,7 @@ static void __init mmu_patch_cmp_limit(s32 *site, unsigned long mapped)
 	modify_instruction_site(site, 0xffff, (unsigned long)__va(mapped) >> 16);
 }
 
-unsigned long __init mmu_mapin_ram(unsigned long top)
+unsigned long __init mmu_mapin_ram(unsigned long base, unsigned long top)
 {
 	unsigned long mapped;
 
diff --git a/arch/powerpc/mm/fsl_booke_mmu.c b/arch/powerpc/mm/fsl_booke_mmu.c
index 080d49b26c3a..210cbc1faf63 100644
--- a/arch/powerpc/mm/fsl_booke_mmu.c
+++ b/arch/powerpc/mm/fsl_booke_mmu.c
@@ -221,7 +221,7 @@ unsigned long map_mem_in_cams(unsigned long ram, int max_cam_idx, bool dryrun)
 #error "LOWMEM_CAM_NUM must be less than NUM_TLBCAMS"
 #endif
 
-unsigned long __init mmu_mapin_ram(unsigned long top)
+unsigned long __init mmu_mapin_ram(unsigned long base, unsigned long top)
 {
 	return tlbcam_addrs[tlbcam_index - 1].limit - PAGE_OFFSET + 1;
 }
diff --git a/arch/powerpc/mm/mmu_decl.h b/arch/powerpc/mm/mmu_decl.h
index c4a717da65eb..61730023dde3 100644
--- a/arch/powerpc/mm/mmu_decl.h
+++ b/arch/powerpc/mm/mmu_decl.h
@@ -130,7 +130,7 @@ extern void wii_memory_fixups(void);
  */
 #ifdef CONFIG_PPC32
 extern void MMU_init_hw(void);
-extern unsigned long mmu_mapin_ram(unsigned long top);
+unsigned long mmu_mapin_ram(unsigned long base, unsigned long top);
 #endif
 
 #ifdef CONFIG_PPC_FSL_BOOK3E
diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c
index ded71126ce4c..b4858818523f 100644
--- a/arch/powerpc/mm/pgtable_32.c
+++ b/arch/powerpc/mm/pgtable_32.c
@@ -258,15 +258,15 @@ void __init mapin_ram(void)
 
 #ifndef CONFIG_WII
 	top = total_lowmem;
-	s = mmu_mapin_ram(top);
+	s = mmu_mapin_ram(0, top);
 	__mapin_ram_chunk(s, top);
 #else
 	if (!wii_hole_size) {
-		s = mmu_mapin_ram(total_lowmem);
+		s = mmu_mapin_ram(0, total_lowmem);
 		__mapin_ram_chunk(s, total_lowmem);
 	} else {
 		top = wii_hole_start;
-		s = mmu_mapin_ram(top);
+		s = mmu_mapin_ram(0, top);
 		__mapin_ram_chunk(s, top);
 
 		top = memblock_end_of_DRAM();
diff --git a/arch/powerpc/mm/ppc_mmu_32.c b/arch/powerpc/mm/ppc_mmu_32.c
index fb747bb0b3e4..2d4d4bf9a63d 100644
--- a/arch/powerpc/mm/ppc_mmu_32.c
+++ b/arch/powerpc/mm/ppc_mmu_32.c
@@ -73,7 +73,7 @@ unsigned long p_block_mapped(phys_addr_t pa)
 	return 0;
 }
 
-unsigned long __init mmu_mapin_ram(unsigned long top)
+unsigned long __init mmu_mapin_ram(unsigned long base, unsigned long top)
 {
 	unsigned long tot, bl, done;
 	unsigned long max_size = (256<<20);