Release 4.14 arch/powerpc/boot/of.c
/*
* Copyright (C) Paul Mackerras 1997.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <stdarg.h>
#include <stddef.h>
#include "types.h"
#include "elf.h"
#include "string.h"
#include "stdio.h"
#include "page.h"
#include "ops.h"
#include "of.h"
/* Value picked to match that used by yaboot */
#define PROG_START 0x01400000
/* only used on 64-bit systems */
#define RAM_END (512<<20)
/* Fixme: use OF */
#define ONE_MB 0x100000
static unsigned long claim_base;
void epapr_platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
unsigned long r6, unsigned long r7);
static void *of_try_claim(unsigned long size)
{
unsigned long addr = 0;
if (claim_base == 0)
claim_base = _ALIGN_UP((unsigned long)_end, ONE_MB);
for(; claim_base < RAM_END; claim_base += ONE_MB) {
#ifdef DEBUG
printf(" trying: 0x%08lx\n\r", claim_base);
#endif
addr = (unsigned long) of_claim(claim_base, size, 0);
if (addr != PROM_ERROR)
break;
}
if (addr == 0)
return NULL;
claim_base = PAGE_ALIGN(claim_base + size);
return (void *)addr;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Mark A. Greer | 101 | 93.52% | 1 | 20.00% |
| Benjamin Herrenschmidt | 3 | 2.78% | 1 | 20.00% |
| Geert Uytterhoeven | 2 | 1.85% | 1 | 20.00% |
| David Gibson | 1 | 0.93% | 1 | 20.00% |
| Cédric Le Goater | 1 | 0.93% | 1 | 20.00% |
| Total | 108 | 100.00% | 5 | 100.00% |
static void of_image_hdr(const void *hdr)
{
const Elf64_Ehdr *elf64 = hdr;
if (elf64->e_ident[EI_CLASS] == ELFCLASS64) {
/*
* Maintain a "magic" minimum address. This keeps some older
* firmware platforms running.
*/
if (claim_base < PROG_START)
claim_base = PROG_START;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Mark A. Greer | 42 | 100.00% | 1 | 100.00% |
| Total | 42 | 100.00% | 1 | 100.00% |
static void of_platform_init(unsigned long a1, unsigned long a2, void *promptr)
{
platform_ops.image_hdr = of_image_hdr;
platform_ops.malloc = of_try_claim;
platform_ops.exit = of_exit;
platform_ops.vmlinux_alloc = of_vmlinux_alloc;
dt_ops.finddevice = of_finddevice;
dt_ops.getprop = of_getprop;
dt_ops.setprop = of_setprop;
of_console_init();
of_init(promptr);
loader_info.promptr = promptr;
if (a1 && a2 && a2 != 0xdeadbeef) {
loader_info.initrd_addr = a1;
loader_info.initrd_size = a2;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Mark A. Greer | 47 | 47.96% | 2 | 28.57% |
| David Gibson | 37 | 37.76% | 3 | 42.86% |
| Paul Mackerras | 12 | 12.24% | 1 | 14.29% |
| Benjamin Herrenschmidt | 2 | 2.04% | 1 | 14.29% |
| Total | 98 | 100.00% | 7 | 100.00% |
void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
unsigned long r6, unsigned long r7)
{
/* Detect OF vs. ePAPR boot */
if (r5)
of_platform_init(r3, r4, (void *)r5);
else
epapr_platform_init(r3, r4, r5, r6, r7);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Benjamin Herrenschmidt | 57 | 100.00% | 1 | 100.00% |
| Total | 57 | 100.00% | 1 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Mark A. Greer | 205 | 54.38% | 2 | 15.38% |
| Benjamin Herrenschmidt | 86 | 22.81% | 2 | 15.38% |
| David Gibson | 53 | 14.06% | 3 | 23.08% |
| Paul Mackerras | 14 | 3.71% | 2 | 15.38% |
| Todd Inglett | 11 | 2.92% | 1 | 7.69% |
| Olaf Hering | 5 | 1.33% | 1 | 7.69% |
| Geert Uytterhoeven | 2 | 0.53% | 1 | 7.69% |
| Cédric Le Goater | 1 | 0.27% | 1 | 7.69% |
| Total | 377 | 100.00% | 13 | 100.00% |
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