Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
44 lines
845 B
C
44 lines
845 B
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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*/
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#include <linux/fs.h>
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#include <linux/fcntl.h>
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#include <linux/memblock.h>
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#include <linux/mm.h>
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#include <asm/bootinfo.h>
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#include <loongson.h>
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#include <mem.h>
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#include <pci.h>
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u32 memsize, highmemsize;
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void __init prom_init_memory(void)
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{
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memblock_add(0x0, (memsize << 20));
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#ifdef CONFIG_CPU_SUPPORTS_ADDRWINCFG
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{
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int bit;
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bit = fls(memsize + highmemsize);
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if (bit != ffs(memsize + highmemsize))
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bit += 20;
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else
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bit = bit + 20 - 1;
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/* set cpu window3 to map CPU to DDR: 2G -> 2G */
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LOONGSON_ADDRWIN_CPUTODDR(ADDRWIN_WIN3, 0x80000000ul,
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0x80000000ul, (1 << bit));
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mmiowb();
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}
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#endif /* !CONFIG_CPU_SUPPORTS_ADDRWINCFG */
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#ifdef CONFIG_64BIT
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if (highmemsize > 0)
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memblock_add(LOONGSON_HIGHMEM_START, highmemsize << 20);
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#endif /* !CONFIG_64BIT */
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}
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