https://github.com/torvalds/linux
- HEAD
- refs/heads/arm64-uaccess
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/certifi-2024.7.4
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/idna-3.7
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/requests-2.32.2
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/setuptools-70.0.0
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/urllib3-2.2.2
- refs/heads/master
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Tip revision: 64570fbc14f8d7cb3fe3995f20e26bc25ce4b2cc authored by Linus Torvalds on 11 October 2021, 00:01:59 UTC
Linux 5.15-rc5
Linux 5.15-rc5
Tip revision: 64570fb
epapr.c
// SPDX-License-Identifier: GPL-2.0-only
/*
* Bootwrapper for ePAPR compliant firmwares
*
* Copyright 2010 David Gibson <david@gibson.dropbear.id.au>, IBM Corporation.
*
* Based on earlier bootwrappers by:
* (c) Benjamin Herrenschmidt <benh@kernel.crashing.org>, IBM Corp,\
* and
* Scott Wood <scottwood@freescale.com>
* Copyright (c) 2007 Freescale Semiconductor, Inc.
*/
#include "ops.h"
#include "stdio.h"
#include "io.h"
#include <libfdt.h>
BSS_STACK(4096);
#define EPAPR_SMAGIC 0x65504150
#define EPAPR_EMAGIC 0x45504150
static unsigned epapr_magic;
static unsigned long ima_size;
static unsigned long fdt_addr;
static void platform_fixups(void)
{
if ((epapr_magic != EPAPR_EMAGIC)
&& (epapr_magic != EPAPR_SMAGIC))
fatal("r6 contained 0x%08x instead of ePAPR magic number\n",
epapr_magic);
if (ima_size < (unsigned long)_end)
printf("WARNING: Image loaded outside IMA!"
" (_end=%p, ima_size=0x%lx)\n", _end, ima_size);
if (ima_size < fdt_addr)
printf("WARNING: Device tree address is outside IMA!"
"(fdt_addr=0x%lx, ima_size=0x%lx)\n", fdt_addr,
ima_size);
if (ima_size < fdt_addr + fdt_totalsize((void *)fdt_addr))
printf("WARNING: Device tree extends outside IMA!"
" (fdt_addr=0x%lx, size=0x%x, ima_size=0x%lx\n",
fdt_addr, fdt_totalsize((void *)fdt_addr), ima_size);
}
void epapr_platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
unsigned long r6, unsigned long r7)
{
epapr_magic = r6;
ima_size = r7;
fdt_addr = r3;
/* FIXME: we should process reserve entries */
simple_alloc_init(_end, ima_size - (unsigned long)_end, 32, 64);
fdt_init((void *)fdt_addr);
serial_console_init();
platform_ops.fixups = platform_fixups;
}