/branches/arm/kernel/arch/arm32/include/mm/memory_init.h |
---|
37,7 → 37,7 |
#include <config.h> |
#define get_memory_size() CONFIG_MEMORY_SIZE /* TODO */ |
size_t get_memory_size(void); |
#endif |
/branches/arm/kernel/arch/arm32/include/mm/page.h |
---|
36,7 → 36,10 |
#define KERN_arm32_PAGE_H_ |
#include <arch/mm/frame.h> |
#include <mm/mm.h> |
#include <arch/exception.h> |
#define PAGE_WIDTH FRAME_WIDTH |
#define PAGE_SIZE FRAME_SIZE |
68,11 → 71,11 |
#define GET_PTL3_ADDRESS_ARCH(ptl2, i) (ptl2) |
#define GET_FRAME_ADDRESS_ARCH(ptl3, i) ( (uintptr_t)(((pte_level1_t*)(ptl3))[(i)]).frame_base_addr << 12 )) |
#define SET_PTL0_ADDRESS_ARCH(ptl0) // TODO |
#define SET_PTL0_ADDRESS_ARCH(ptl0) ( set_ptl0_addr((pte_level0_t *)(ptl0)) ) |
#define SET_PTL1_ADDRESS_ARCH(ptl0, i, a) (((pte_level0_t *)(ptl0))[(i)].coarse_table_addr = (a)>>10) |
#define SET_PTL2_ADDRESS_ARCH(ptl1, i, a) |
#define SET_PTL3_ADDRESS_ARCH(ptl2, i, a) |
#define SET_FRAME_ADDRESS_ARCH(ptl3, i, a) (((pte_level1_t *)(ptl3))[(i)].frame_base_addr = (a)>>12) |
#define SET_FRAME_ADDRESS_ARCH(ptl3, i, a) (((pte_level1_t *)(ptl3))[(i)].frame_base_addr = (a)>>12) |
#define GET_PTL1_FLAGS_ARCH(ptl0, i) get_pt_level0_flags((pte_level0_t *)(ptl0), (index_t)(i)) |
#define GET_PTL2_FLAGS_ARCH(ptl1, i) PAGE_PRESENT |
84,16 → 87,24 |
#define SET_PTL3_FLAGS_ARCH(ptl2, i, x) |
#define SET_FRAME_FLAGS_ARCH(ptl3, i, x) set_pt_level1_flags((pte_level1_t *)(ptl3), (index_t)(i), (x)) |
#define PTE_VALID_ARCH(pte) (*((uint32_t *) (pte)) != 0) |
#define PTE_PRESENT_ARCH(pte) ( ((pte_level0_t *)(pte))->descriptor_type ) |
#define PTE_GET_FRAME_ARCH(pte) ( ((pte_level1_t *)(pte))->frame_base_addr << FRAME_WIDTH) // pte should point into ptl3 |
#define PTE_WRITABLE_ARCH(pte) ( ((pte_level1_t *)(pte))->access_permission_0 == pte_ap_user_rw_kernel_rw ) // pte should point into ptl3 |
#define PTE_EXECUTABLE_ARCH(pte) 1 |
#define PTE_VALID_ARCH(pte) (*((uint32_t *) (pte)) != 0) |
#define PTE_PRESENT_ARCH(pte) ( ((pte_level0_t *)(pte))->descriptor_type ) |
#define PTE_GET_FRAME_ARCH(pte) ( ((pte_level1_t *)(pte))->frame_base_addr << FRAME_WIDTH) // pte should point into ptl3 |
#define PTE_WRITABLE_ARCH(pte) ( ((pte_level1_t *)(pte))->access_permission_0 == pte_ap_user_rw_kernel_rw ) // pte should point into ptl3 |
#define PTE_EXECUTABLE_ARCH(pte) 1 |
#ifndef __ASM__ |
#include <mm/mm.h> |
#include <arch/exception.h> |
/** Set adress of paging level 0 table |
* \param pt pointer to page table to set |
*/ |
static inline void set_ptl0_addr( pte_level0_t* pt){ |
asm volatile ( "mrc p15, 0, %0, c2, c0, 0 \n" |
: |
: "r"(pt) |
); |
} |
//TODO Comment: Page table structure as in other architectures |
106,8 → 117,6 |
( 1 << PAGE_READ_SHIFT ) | |
( 1 << PAGE_EXEC_SHIFT ) | |
( 1 << PAGE_CACHEABLE ) |
// Alf Note: MayBe return WriteAble because level0 should use only kernel which can write |
// Alf Note: MayBe return global flag if index i > 2048 (horni 2GB because kernel is mapped globaly) |
); |
} |
120,10 → 129,9 |
( (p->access_permission_0 == pte_ap_user_ro_kernel_rw) << PAGE_READ_SHIFT ) | |
( (p->access_permission_0 == pte_ap_user_rw_kernel_rw) << PAGE_READ_SHIFT ) | |
( (p->access_permission_0 == pte_ap_user_rw_kernel_rw) << PAGE_WRITE_SHIFT ) | |
( (p->access_permission_0 != pte_ap_user_no_kernel_rw) << PAGE_USER_SHIFT ) | |
( (p->access_permission_0 != pte_ap_user_no_kernel_rw) << PAGE_USER_SHIFT ) | |
( 1 << PAGE_EXEC_SHIFT ) | |
( p->bufferable << PAGE_CACHEABLE ) |
// Alf Note: MayBe return global flag if index i > 2048 (horni 2GB because kernel is mapped globaly) |
); |
155,7 → 163,7 |
if ( flags & PAGE_NOT_PRESENT ) { |
p->descriptor_type = pte_descriptor_not_preset; |
p->access_permission_3 = 1; // Ensure not all bits set to zero ... correct acess rights are stored in other 0-2 access permission entries |
p->access_permission_3 = 1; |
} else |
{ |
p->descriptor_type = pte_descriptor_coarse_table; |
/branches/arm/kernel/arch/arm32/Makefile.inc |
---|
79,5 → 79,6 |
arch/$(ARCH)/src/aux_print/io.c \ |
arch/$(ARCH)/src/console.c \ |
arch/$(ARCH)/src/drivers/msim_gxemul.c \ |
arch/$(ARCH)/src/exception.c |
arch/$(ARCH)/src/exception.c \ |
arch/$(ARCH)/src/mm/memory_init.c |
/branches/arm/kernel/arch/arm32/src/arm32.c |
---|
63,10 → 63,12 |
aux_printf("arch_pre_mm_init\n"); |
console_init(device_assign_devno()); |
} |
void arch_post_mm_init(void) |
{ |
aux_printf("arch_post_mm_init\n"); |
/* TODO */ |
} |
/branches/arm/kernel/arch/arm32/src/mm/frame.c |
---|
33,11 → 33,22 |
*/ |
#include <mm/frame.h> |
#include <config.h> |
#include "../aux_print/printf.h" |
/** Create memory zones. */ |
void frame_arch_init(void) |
{ |
/* TODO */ |
aux_printf("frame_arch_init ... begin\n"); |
// all memory as one zone |
zone_create(0, ADDR2PFN(config.memory_size), 1, 0); |
aux_printf("frame_arch_init ... 1\n"); |
/* |
* Blacklist interrupt vector |
*/ |
frame_mark_unavailable(0, 1); |
aux_printf("frame_arch_init ... end\n"); |
} |
/** @} |
/branches/arm/kernel/arch/arm32/src/mm/memory_init.c |
---|
0,0 → 1,51 |
/* |
* Copyright (c) 2005 Josef Cejka |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
/** @addtogroup arm32mm |
* @{ |
*/ |
/** @file |
*/ |
#include <arch/mm/memory_init.h> |
#include <arch/mm/page.h> |
#include "../aux_print/printf.h" |
#define GXEMUL_MP_ADDRESS 0x11000000 |
#define GXEMUL_MP_MEMSIZE_OFFSET 0x0090 |
size_t get_memory_size(void) |
{ |
//TODO preprocessor don't work |
#if MACHINE == gxemul |
return *((int*)(GXEMUL_MP_ADDRESS+GXEMUL_MP_MEMSIZE_OFFSET)); |
#endif |
} |
/** @} |
*/ |
/branches/arm/kernel/arch/arm32/src/mm/page.c |
---|
35,10 → 35,42 |
#include <arch/mm/page.h> |
#include <genarch/mm/page_pt.h> |
#include <mm/page.h> |
#include <align.h> |
#include <config.h> |
#include "../aux_print/printf.h" |
void page_arch_init(void) |
{ |
aux_printf("page_arch_init\n"); |
uintptr_t cur; |
int flags; |
page_mapping_operations = &pt_mapping_operations; |
flags = PAGE_CACHEABLE; |
const unsigned maxmem = ALIGN_DOWN(config.memory_size, FRAME_SIZE); |
for (cur = 0; cur < maxmem; cur += FRAME_SIZE) { |
page_mapping_insert(AS_KERNEL, PA2KA(cur), cur, flags); |
} |
//TODO set page fault routines |
// no problem no ... kernel doesn't do page faults |
asm volatile ( |
"ldr r0, =0x55555555 \n" |
"mrc p15, 0, r0, c3, c0, 0 \n" //set domain acces rights to client <==> take rights from page tables |
"mcr p15, 0, r0, c1, c0, 0 \n" // get current setting of system ... register 1 isn't only for memmory management |
"ldr r1, =0xFFFFFE8D \n" // mask to disable aligment checks, System, Rom bit disable |
"and r0, r0, r1 \n" |
"ldr r1, =0x00000001 \n" // mask to enable paging |
"orr r0, r0, r1 \n" |
"mrc p15, 0, r0, c1, c0, 0 \n" // store setting |
: |
: |
: "r0", "r1" |
); |
} |
/** Map device into kernel space. */ |
50,3 → 82,4 |
/** @} |
*/ |