5c7dd7acc3
repo: https://github.com/T-head-Semi/linux commit: b1313fe517ca3703119dcc99ef3bbf75ab42bcfb Change-Id: I6cbb35294024ea3a66140e311f4bb705fd7fd626
30 lines
779 B
C
30 lines
779 B
C
/*
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* rbtx4939 specific prom routines
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#include <linux/init.h>
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#include <linux/memblock.h>
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#include <asm/txx9/generic.h>
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#include <asm/txx9/rbtx4939.h>
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void __init rbtx4939_prom_init(void)
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{
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unsigned long start, size;
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u64 win;
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int i;
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for (i = 0; i < 4; i++) {
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if (!((__u32)____raw_readq(&tx4939_ddrcptr->winen) & (1 << i)))
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continue;
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win = ____raw_readq(&tx4939_ddrcptr->win[i]);
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start = (unsigned long)(win >> 48);
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size = (((unsigned long)(win >> 32) & 0xffff) + 1) - start;
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memblock_add(start << 20, size << 20);
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}
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txx9_sio_putchar_init(TX4939_SIO_REG(0) & 0xfffffffffULL);
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}
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