From: <gerg@snapgear.com>
To: linux-m68k@vger.kernel.org, uclinux-dev@uclinux.org
Cc: Greg Ungerer <gerg@uclinux.org>
Subject: [PATCH 07/36] m68k: add ColdFire 54xx CPU MMU memory init code
Date: Tue, 25 Oct 2011 17:18:59 +1000 [thread overview]
Message-ID: <1319527168-11166-8-git-send-email-gerg@snapgear.com> (raw)
In-Reply-To: <1319527168-11166-1-git-send-email-gerg@snapgear.com>
From: Greg Ungerer <gerg@uclinux.org>
Add code to the 54xx ColdFire CPU init to setup memory ready for the
m68k paged memory start up.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
---
arch/m68k/platform/54xx/config.c | 52 ++++++++++++++++++++++++++++++++++++++
1 files changed, 52 insertions(+), 0 deletions(-)
diff --git a/arch/m68k/platform/54xx/config.c b/arch/m68k/platform/54xx/config.c
index 7813098..bc85b98 100644
--- a/arch/m68k/platform/54xx/config.c
+++ b/arch/m68k/platform/54xx/config.c
@@ -13,11 +13,17 @@
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/io.h>
+#include <linux/mm.h>
+#include <linux/bootmem.h>
+#include <asm/pgalloc.h>
#include <asm/machdep.h>
#include <asm/coldfire.h>
#include <asm/m54xxsim.h>
#include <asm/mcfuart.h>
#include <asm/m54xxgpt.h>
+#ifdef CONFIG_MMU
+#include <asm/mmu_context.h>
+#endif
/***************************************************************************/
@@ -95,8 +101,54 @@ static void mcf54xx_reset(void)
/***************************************************************************/
+#ifdef CONFIG_MMU
+
+unsigned long num_pages;
+
+static void __init mcf54xx_bootmem_alloc(void)
+{
+ extern unsigned int _rambase, _ramstart, _ramend;
+ unsigned long start_pfn;
+ unsigned long memstart;
+
+ /* _rambase and _ramend will be natureally page aligned */
+ m68k_memory[0].addr = _rambase;
+ m68k_memory[0].size = _ramend - _rambase;
+
+ /* compute total pages in system */
+ num_pages = (_ramend - _rambase) >> PAGE_SHIFT;
+
+ /* page numbers */
+ memstart = PAGE_ALIGN(_ramstart);
+ min_low_pfn = _rambase >> PAGE_SHIFT;
+ start_pfn = memstart >> PAGE_SHIFT;
+ max_low_pfn = _ramend >> PAGE_SHIFT;
+ high_memory = (void *)_ramend;
+
+ m68k_virt_to_node_shift = fls(_ramend - _rambase - 1) - 6;
+ module_fixup(NULL, __start_fixup, __stop_fixup);
+
+ /* setup bootmem data */
+ m68k_setup_node(0);
+ memstart += init_bootmem_node(NODE_DATA(0), start_pfn,
+ min_low_pfn, max_low_pfn);
+ free_bootmem_node(NODE_DATA(0), memstart, _ramend - memstart);
+}
+
+#endif /* CONFIG_MMU */
+
+/***************************************************************************/
+
void __init config_BSP(char *commandp, int size)
{
+#ifdef CONFIG_MMU
+ m68k_cputype = CPU_COLDFIRE;
+ m68k_fputype = FPU_COLDFIRE;
+ m68k_mmutype = MMU_COLDFIRE;
+ m68k_machtype = MACH_M54XX;
+ mcf54xx_bootmem_alloc();
+ mmu_context_init();
+#endif
mach_reset = mcf54xx_reset;
m54xx_uarts_init();
}
--
1.7.0.4
next prev parent reply other threads:[~2011-10-25 7:21 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-25 7:18 [PATCH 00/36] m68k: ColdFire MMU support gerg
2011-10-25 7:18 ` [PATCH 01/36] m68k: add machine and CPU definitions for ColdFire cores gerg
2011-10-25 7:18 ` [PATCH 02/36] m68k: show ColdFire CPU/FPU/MMU type gerg
2011-10-25 7:18 ` [PATCH 03/36] m68k: definitions for the ColdFire V4e MMU hardware gerg
2011-10-25 7:18 ` [PATCH 04/36] m68k: make old interrupt code conditional on correct CPU types gerg
2011-10-25 7:18 ` [PATCH 05/36] m68k: add TASK definitions for ColdFires running with MMU gerg
2011-10-25 7:18 ` [PATCH 06/36] m68k: modify user space access functions to support ColdFire CPUs gerg
2011-10-30 13:02 ` Geert Uytterhoeven
2011-10-31 5:03 ` Greg Ungerer
2011-10-25 7:18 ` gerg [this message]
2011-10-25 7:19 ` [PATCH 08/36] m68k: init the MMU hardware for the 54xx ColdFire gerg
2011-10-25 7:19 ` [PATCH 09/36] m68k: set register a2 to current if MMU enabled on ColdFire gerg
2011-10-30 13:06 ` Geert Uytterhoeven
2011-10-31 4:19 ` Greg Ungerer
2011-10-25 7:19 ` [PATCH 10/36] m68k: page table support definitions and code for ColdFire MMU gerg
2011-10-30 13:07 ` Geert Uytterhoeven
2011-10-25 7:19 ` [PATCH 11/36] m68k: add page table size definitions for ColdFire V4e MMU gerg
2011-10-25 7:19 ` [PATCH 12/36] m68k: add ColdFire paging exception handling code gerg
2011-10-25 7:19 ` [PATCH 13/36] m68k: add cache support for V4e ColdFire cores running with MMU enabled gerg
2011-10-25 7:19 ` [PATCH 14/36] m68k: modify ColdFire 54xx cache support for " gerg
2011-10-25 7:19 ` [PATCH 15/36] m68k: add TLB flush support for the ColdFire V4e MMU hardware gerg
2011-10-30 13:26 ` Geert Uytterhoeven
2011-10-25 7:19 ` [PATCH 16/36] m68k: set ColdFire MMU page size gerg
2011-10-30 13:29 ` Geert Uytterhoeven
2011-10-31 4:41 ` Greg Ungerer
2011-10-25 7:19 ` [PATCH 17/36] m68k: ColdFire with MMU does not support separate address spaces gerg
2011-10-25 7:19 ` [PATCH 18/36] m68k: ColdFire V4e MMU context support code gerg
2011-10-25 7:19 ` [PATCH 19/36] m68k: use tracehook_report_syscall_entry/exit for ColdFire MMU ptrace path gerg
2011-10-25 7:19 ` [PATCH 20/36] m68k: ColdFire with MMU needs simpler lib checksum code gerg
2011-10-25 7:19 ` [PATCH 21/36] m68k: modify cache push and clear code for ColdFire with MMU enable gerg
2011-10-25 7:19 ` [PATCH 22/36] m68k: use ColdFire V4e MMU flags when ioremapping() gerg
2011-10-25 7:19 ` [PATCH 23/36] m68k: ColdFire V4e MMU paginit init code and miss handler gerg
2011-10-30 15:56 ` Finn Thain
2011-10-31 4:46 ` Greg Ungerer
2011-10-25 7:19 ` [PATCH 24/36] m68k: compile appropriate mm arch files for ColdFire V4e MMU support gerg
2011-10-30 13:46 ` Geert Uytterhoeven
2011-10-31 5:39 ` Greg Ungerer
2011-10-25 7:19 ` [PATCH 25/36] m68k: create ColdFire MMU pgalloc code gerg
2011-10-25 7:19 ` [PATCH 26/36] m68k: use non-MMU entry.S code when compiling for ColdFire CPU gerg
2011-10-25 7:19 ` [PATCH 27/36] m68k: add code to setup a ColdFire 54xx platform when MMU enabled gerg
2011-10-30 13:39 ` Geert Uytterhoeven
2011-10-31 4:59 ` Greg Ungerer
2011-10-25 7:19 ` [PATCH 28/36] m68k: ColdFire with MMU enabled uses same clocking code as non-MMU gerg
2011-10-25 7:19 ` [PATCH 29/36] m68k: use non-MMU linker script for ColdFire MMU builds gerg
2011-10-25 7:19 ` [PATCH 30/36] m68k: adjustments to stack frame for ColdFire with MMU enabled gerg
2011-10-25 7:19 ` [PATCH 31/36] m68k: completely disable FPU support for ColdFire gerg
2011-10-30 15:56 ` Finn Thain
2011-10-25 7:19 ` [PATCH 32/36] m68k: use new style interrupt handling for ColdFire with MMU enabled gerg
2011-10-25 7:19 ` [PATCH 33/36] m68k: define a ack_bad_irq() function for ColdFire with MMU gerg
2011-10-25 7:19 ` [PATCH 34/36] m68k: add ColdFire with MMU enabled support to the m68k mem init code gerg
2011-10-25 7:19 ` [PATCH 35/36] m68k: config option adjustments for configuring ColdFire with MMU gerg
2011-10-30 13:42 ` Geert Uytterhoeven
2011-10-25 7:19 ` [PATCH 36/36] m68k: allow ColdFire 547x and 548x CPUs to be built with MMU enabled gerg
2011-10-30 13:47 ` [PATCH 00/36] m68k: ColdFire MMU support Geert Uytterhoeven
2011-10-31 5:46 ` Greg Ungerer
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