From 19d8f84f86af867abee174be8bf1e4941a59143d Mon Sep 17 00:00:00 2001
From: Paul Mundt <lethal@linux-sh.org>
Date: Mon, 10 May 2010 15:39:05 +0900
Subject: [PATCH] sh: enable LMB region setup via machvec.
This plugs in a memory init callback in the machvec to permit boards to
wire up various bits of memory directly in to LMB. A generic machvec
implementation is provided that simply wraps around the normal
Kconfig-derived memory start/size.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
---
arch/sh/include/asm/io_generic.h | 1 +
arch/sh/include/asm/machvec.h | 2 ++
arch/sh/include/asm/mmzone.h | 1 -
arch/sh/kernel/machvec.c | 1 +
arch/sh/kernel/setup.c | 26 +++++++++++++-------------
arch/sh/mm/init.c | 8 +++++++-
6 files changed, 24 insertions(+), 15 deletions(-)
diff --git a/arch/sh/include/asm/io_generic.h b/arch/sh/include/asm/io_generic.h
index 1e5d375f55dce..491df93cbf8e3 100644
--- a/arch/sh/include/asm/io_generic.h
+++ b/arch/sh/include/asm/io_generic.h
@@ -38,5 +38,6 @@ void IO_CONCAT(__IO_PREFIX,iounmap)(void *addr);
void __iomem *IO_CONCAT(__IO_PREFIX,ioport_map)(unsigned long addr, unsigned int size);
void IO_CONCAT(__IO_PREFIX,ioport_unmap)(void __iomem *addr);
+void IO_CONCAT(__IO_PREFIX,mem_init)(void);
#undef __IO_PREFIX
diff --git a/arch/sh/include/asm/machvec.h b/arch/sh/include/asm/machvec.h
index 9c30955630ffb..bc0218cb72e13 100644
--- a/arch/sh/include/asm/machvec.h
+++ b/arch/sh/include/asm/machvec.h
@@ -49,6 +49,8 @@ struct sh_machine_vector {
int (*mv_clk_init)(void);
int (*mv_mode_pins)(void);
+
+ void (*mv_mem_init)(void);
};
extern struct sh_machine_vector sh_mv;
diff --git a/arch/sh/include/asm/mmzone.h b/arch/sh/include/asm/mmzone.h
index 7f5363b29ba07..94f04b2f4fb1f 100644
--- a/arch/sh/include/asm/mmzone.h
+++ b/arch/sh/include/asm/mmzone.h
@@ -42,7 +42,6 @@ setup_bootmem_node(int nid, unsigned long start, unsigned long end)
void __init plat_mem_setup(void);
/* arch/sh/kernel/setup.c */
-void __init setup_bootmem_allocator(unsigned long start_pfn);
void __init __add_active_range(unsigned int nid, unsigned long start_pfn,
unsigned long end_pfn);
diff --git a/arch/sh/kernel/machvec.c b/arch/sh/kernel/machvec.c
index 1652340ba3f2a..85cfaf916fdc0 100644
--- a/arch/sh/kernel/machvec.c
+++ b/arch/sh/kernel/machvec.c
@@ -131,6 +131,7 @@ void __init sh_mv_setup(void)
mv_set(ioport_unmap);
mv_set(irq_demux);
mv_set(mode_pins);
+ mv_set(mem_init);
if (!sh_mv.mv_nr_irqs)
sh_mv.mv_nr_irqs = NR_IRQS;
diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c
index e3f0da7b865d3..2c9ab28427658 100644
--- a/arch/sh/kernel/setup.c
+++ b/arch/sh/kernel/setup.c
@@ -4,7 +4,7 @@
* This file handles the architecture-dependent parts of initialization
*
* Copyright (C) 1999 Niibe Yutaka
- * Copyright (C) 2002 - 2007 Paul Mundt
+ * Copyright (C) 2002 - 2010 Paul Mundt
*/
#include <linux/screen_info.h>
#include <linux/ioport.h>
@@ -41,6 +41,7 @@
#include <asm/clock.h>
#include <asm/smp.h>
#include <asm/mmu_context.h>
+#include <asm/mmzone.h>
/*
* Initialize loops_per_jiffy as 10000000 (1000MIPS).
@@ -247,7 +248,7 @@ void __init __add_active_range(unsigned int nid, unsigned long start_pfn,
add_active_range(nid, start_pfn, end_pfn);
}
-void __init setup_bootmem_allocator(unsigned long free_pfn)
+void __init do_init_bootmem(void)
{
unsigned long bootmap_size;
unsigned long bootmap_pages, bootmem_paddr;
@@ -298,12 +299,9 @@ void __init setup_bootmem_allocator(unsigned long free_pfn)
sparse_memory_present_with_active_regions(0);
}
-#ifndef CONFIG_NEED_MULTIPLE_NODES
static void __init setup_memory(void)
{
unsigned long start_pfn;
- u64 base = min_low_pfn << PAGE_SHIFT;
- u64 size = (max_low_pfn << PAGE_SHIFT) - base;
/*
* Partially used pages are not usable - thus
@@ -311,8 +309,6 @@ static void __init setup_memory(void)
*/
start_pfn = PFN_UP(__pa(_end));
- lmb_add(base, size);
-
/*
* Reserve the kernel text and
* Reserve the bootmem bitmap. We do this in two steps (first step
@@ -333,11 +329,9 @@ static void __init setup_memory(void)
lmb_analyze();
lmb_dump_all();
- setup_bootmem_allocator(start_pfn);
+ do_init_bootmem();
+ plat_mem_setup();
}
-#else
-extern void __init setup_memory(void);
-#endif
/*
* Note: elfcorehdr_addr is not just limited to vmcore. It is also used by
@@ -358,7 +352,11 @@ static int __init parse_elfcorehdr(char *arg)
early_param("elfcorehdr", parse_elfcorehdr);
#endif
-void __init __attribute__ ((weak)) plat_early_device_setup(void)
+void __init __weak plat_early_device_setup(void)
+{
+}
+
+void __init __weak plat_mem_setup(void)
{
}
@@ -426,7 +424,10 @@ void __init setup_arch(char **cmdline_p)
/* Let earlyprintk output early console messages */
early_platform_driver_probe("earlyprintk", 1, 1);
+ lmb_init();
+
sh_mv_setup();
+ sh_mv.mv_mem_init();
/*
* Find the highest page frame number we have available
@@ -442,7 +443,6 @@ void __init setup_arch(char **cmdline_p)
nodes_clear(node_online_map);
pmb_init();
- lmb_init();
setup_memory();
sparse_init();
diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index c505de61a5ca4..9c5400b02f43f 100644
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@@ -2,7 +2,7 @@
* linux/arch/sh/mm/init.c
*
* Copyright (C) 1999 Niibe Yutaka
- * Copyright (C) 2002 - 2007 Paul Mundt
+ * Copyright (C) 2002 - 2010 Paul Mundt
*
* Based on linux/arch/i386/mm/init.c:
* Copyright (C) 1995 Linus Torvalds
@@ -16,6 +16,7 @@
#include <linux/pagemap.h>
#include <linux/percpu.h>
#include <linux/io.h>
+#include <linux/lmb.h>
#include <linux/dma-mapping.h>
#include <asm/mmu_context.h>
#include <asm/tlb.h>
@@ -27,6 +28,11 @@
DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
pgd_t swapper_pg_dir[PTRS_PER_PGD];
+void __init generic_mem_init(void)
+{
+ lmb_add(__MEMORY_START, __MEMORY_SIZE);
+}
+
#ifdef CONFIG_MMU
static pte_t *__get_pte_phys(unsigned long addr)
{
--
2.30.2