Release 4.10 arch/blackfin/mm/init.c
/*
* Copyright 2004-2009 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
#include <linux/gfp.h>
#include <linux/swap.h>
#include <linux/bootmem.h>
#include <linux/uaccess.h>
#include <linux/export.h>
#include <asm/bfin-global.h>
#include <asm/pda.h>
#include <asm/cplbinit.h>
#include <asm/early_printk.h>
#include "blackfin_sram.h"
/*
* ZERO_PAGE is a special page that is used for zero-initialized data and COW.
* Let the bss do its zero-init magic so we don't have to do it ourselves.
*/
char empty_zero_page[PAGE_SIZE] __attribute__((aligned(PAGE_SIZE)));
EXPORT_SYMBOL(empty_zero_page);
#ifndef CONFIG_EXCEPTION_L1_SCRATCH
#if defined CONFIG_SYSCALL_TAB_L1
__attribute__((l1_data))
#endif
static unsigned long exception_stack[NR_CPUS][1024];
#endif
struct blackfin_pda cpu_pda[NR_CPUS];
EXPORT_SYMBOL(cpu_pda);
/*
* paging_init() continues the virtual memory environment setup which
* was begun by the code in arch/head.S.
* The parameters are pointers to where to stick the starting and ending
* addresses of available kernel virtual memory.
*/
void __init paging_init(void)
{
/*
* make sure start_mem is page aligned, otherwise bootmem and
* page_alloc get different views of the world
*/
unsigned long end_mem = memory_end & PAGE_MASK;
unsigned long zones_size[MAX_NR_ZONES] = {
[0] = 0,
[ZONE_DMA] = (end_mem - CONFIG_PHY_RAM_BASE_ADDRESS) >> PAGE_SHIFT,
[ZONE_NORMAL] = 0,
#ifdef CONFIG_HIGHMEM
[ZONE_HIGHMEM] = 0,
#endif
};
/* Set up SFC/DFC registers (user data space) */
set_fs(KERNEL_DS);
pr_debug("free_area_init -> start_mem is %#lx virtual_end is %#lx\n",
PAGE_ALIGN(memory_start), end_mem);
free_area_init_node(0, zones_size,
CONFIG_PHY_RAM_BASE_ADDRESS >> PAGE_SHIFT, NULL);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| bryan wu | bryan wu | 47 | 50.54% | 1 | 20.00% |
| mike frysinger | mike frysinger | 30 | 32.26% | 2 | 40.00% |
| bob liu | bob liu | 10 | 10.75% | 1 | 20.00% |
| aubrey li | aubrey li | 6 | 6.45% | 1 | 20.00% |
| Total | 93 | 100.00% | 5 | 100.00% |
asmlinkage void __init init_pda(void)
{
unsigned int cpu = raw_smp_processor_id();
early_shadow_stamp();
/* Initialize the PDA fields holding references to other parts
of the memory. The content of such memory is still
undefined at the time of the call, we are only setting up
valid pointers to it. */
memset(&cpu_pda[cpu], 0, sizeof(cpu_pda[cpu]));
#ifdef CONFIG_EXCEPTION_L1_SCRATCH
cpu_pda[cpu].ex_stack = (unsigned long *)(L1_SCRATCH_START + \
L1_SCRATCH_LENGTH);
#else
cpu_pda[cpu].ex_stack = exception_stack[cpu + 1];
#endif
#ifdef CONFIG_SMP
cpu_pda[cpu].imask = 0x1f;
#endif
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| graf yang | graf yang | 89 | 95.70% | 2 | 50.00% |
| robin getz | robin getz | 3 | 3.23% | 1 | 25.00% |
| mike frysinger | mike frysinger | 1 | 1.08% | 1 | 25.00% |
| Total | 93 | 100.00% | 4 | 100.00% |
void __init mem_init(void)
{
char buf[64];
high_memory = (void *)(memory_end & PAGE_MASK);
max_mapnr = MAP_NR(high_memory);
printk(KERN_DEBUG "Kernel managed physical pages: %lu\n", max_mapnr);
/* This will put all low memory onto the freelists. */
free_all_bootmem();
snprintf(buf, sizeof(buf) - 1, "%uK DMA", DMA_UNCACHED_REGION >> 10);
mem_init_print_info(buf);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| bryan wu | bryan wu | 36 | 52.94% | 1 | 14.29% |
| jiang liu | jiang liu | 24 | 35.29% | 2 | 28.57% |
| yi li | yi li | 6 | 8.82% | 2 | 28.57% |
| mike frysinger | mike frysinger | 1 | 1.47% | 1 | 14.29% |
| sonic zhang | sonic zhang | 1 | 1.47% | 1 | 14.29% |
| Total | 68 | 100.00% | 7 | 100.00% |
#ifdef CONFIG_BLK_DEV_INITRD
void __init free_initrd_mem(unsigned long start, unsigned long end)
{
#ifndef CONFIG_MPU
free_reserved_area((void *)start, (void *)end, -1, "initrd");
#endif
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mike frysinger | mike frysinger | 17 | 43.59% | 1 | 16.67% |
| jiang liu | jiang liu | 14 | 35.90% | 3 | 50.00% |
| bernd schmidt | bernd schmidt | 5 | 12.82% | 1 | 16.67% |
| bryan wu | bryan wu | 3 | 7.69% | 1 | 16.67% |
| Total | 39 | 100.00% | 6 | 100.00% |
#endif
void __ref free_initmem(void)
{
#if defined CONFIG_RAMKERNEL && !defined CONFIG_MPU
free_initmem_default(-1);
if (memory_start == (unsigned long)(&__init_end))
memory_start = (unsigned long)(&__init_begin);
#endif
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| sonic zhang | sonic zhang | 24 | 50.00% | 1 | 16.67% |
| bryan wu | bryan wu | 13 | 27.08% | 1 | 16.67% |
| bernd schmidt | bernd schmidt | 7 | 14.58% | 1 | 16.67% |
| jiang liu | jiang liu | 3 | 6.25% | 2 | 33.33% |
| fabian frederick | fabian frederick | 1 | 2.08% | 1 | 16.67% |
| Total | 48 | 100.00% | 6 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| graf yang | graf yang | 131 | 29.98% | 2 | 8.00% |
| bryan wu | bryan wu | 119 | 27.23% | 1 | 4.00% |
| mike frysinger | mike frysinger | 73 | 16.70% | 6 | 24.00% |
| jiang liu | jiang liu | 41 | 9.38% | 4 | 16.00% |
| sonic zhang | sonic zhang | 25 | 5.72% | 2 | 8.00% |
| bernd schmidt | bernd schmidt | 12 | 2.75% | 1 | 4.00% |
| bob liu | bob liu | 10 | 2.29% | 1 | 4.00% |
| robin getz | robin getz | 7 | 1.60% | 2 | 8.00% |
| aubrey li | aubrey li | 6 | 1.37% | 1 | 4.00% |
| yi li | yi li | 6 | 1.37% | 2 | 8.00% |
| tejun heo | tejun heo | 3 | 0.69% | 1 | 4.00% |
| paul gortmaker | paul gortmaker | 3 | 0.69% | 1 | 4.00% |
| fabian frederick | fabian frederick | 1 | 0.23% | 1 | 4.00% |
| Total | 437 | 100.00% | 25 | 100.00% |
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