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63 lines
1.7 KiB
63 lines
1.7 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Bootwrapper for ePAPR compliant firmwares |
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* |
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* Copyright 2010 David Gibson <[email protected]>, IBM Corporation. |
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* |
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* Based on earlier bootwrappers by: |
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* (c) Benjamin Herrenschmidt <[email protected]>, IBM Corp,\ |
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* and |
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* Scott Wood <[email protected]> |
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* Copyright (c) 2007 Freescale Semiconductor, Inc. |
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*/ |
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#include "ops.h" |
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#include "stdio.h" |
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#include "io.h" |
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#include <libfdt.h> |
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BSS_STACK(4096); |
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#define EPAPR_SMAGIC 0x65504150 |
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#define EPAPR_EMAGIC 0x45504150 |
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static unsigned epapr_magic; |
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static unsigned long ima_size; |
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static unsigned long fdt_addr; |
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static void platform_fixups(void) |
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{ |
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if ((epapr_magic != EPAPR_EMAGIC) |
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&& (epapr_magic != EPAPR_SMAGIC)) |
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fatal("r6 contained 0x%08x instead of ePAPR magic number\n", |
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epapr_magic); |
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if (ima_size < (unsigned long)_end) |
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printf("WARNING: Image loaded outside IMA!" |
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" (_end=%p, ima_size=0x%lx)\n", _end, ima_size); |
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if (ima_size < fdt_addr) |
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printf("WARNING: Device tree address is outside IMA!" |
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"(fdt_addr=0x%lx, ima_size=0x%lx)\n", fdt_addr, |
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ima_size); |
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if (ima_size < fdt_addr + fdt_totalsize((void *)fdt_addr)) |
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printf("WARNING: Device tree extends outside IMA!" |
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" (fdt_addr=0x%lx, size=0x%x, ima_size=0x%lx\n", |
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fdt_addr, fdt_totalsize((void *)fdt_addr), ima_size); |
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} |
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void epapr_platform_init(unsigned long r3, unsigned long r4, unsigned long r5, |
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unsigned long r6, unsigned long r7) |
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{ |
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epapr_magic = r6; |
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ima_size = r7; |
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fdt_addr = r3; |
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/* FIXME: we should process reserve entries */ |
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simple_alloc_init(_end, ima_size - (unsigned long)_end, 32, 64); |
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fdt_init((void *)fdt_addr); |
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serial_console_init(); |
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platform_ops.fixups = platform_fixups; |
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}
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