forked from Minki/linux
5c49218a15
Ensure we check for ARM926 in the uncompressor, as all current ARM926s do not have an ID register and all have S3C2440 style UARTs. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
55 lines
1.3 KiB
C
55 lines
1.3 KiB
C
/* linux/include/asm-arm/arch-s3c2410/uncompress.h
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*
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* Copyright (c) 2003 Simtec Electronics
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* Ben Dooks <ben@simtec.co.uk>
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*
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* S3C2410 - uncompress code
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __ASM_ARCH_UNCOMPRESS_H
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#define __ASM_ARCH_UNCOMPRESS_H
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#include <asm/arch/regs-gpio.h>
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#include <asm/arch/map.h>
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/* working in physical space... */
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#undef S3C2410_GPIOREG
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#define S3C2410_GPIOREG(x) ((S3C24XX_PA_GPIO + (x)))
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#include <asm/plat-s3c/uncompress.h>
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/* how many bytes we allow into the FIFO at a time in FIFO mode */
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#define FIFO_MAX (14)
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static inline int is_arm926(void)
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{
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unsigned int cpuid;
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asm volatile ("mrc p15, 0, %0, c1, c0, 0" : "=r" (cpuid));
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return ((cpuid & 0xff0) == 0x260);
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}
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static void arch_detect_cpu(void)
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{
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unsigned int cpuid;
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cpuid = *((volatile unsigned int *)S3C2410_GSTATUS1);
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cpuid &= S3C2410_GSTATUS1_IDMASK;
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if (is_arm926() || cpuid == S3C2410_GSTATUS1_2440 ||
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cpuid == S3C2410_GSTATUS1_2442) {
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fifo_mask = S3C2440_UFSTAT_TXMASK;
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fifo_max = 63 << S3C2440_UFSTAT_TXSHIFT;
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} else {
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fifo_mask = S3C2410_UFSTAT_TXMASK;
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fifo_max = 15 << S3C2410_UFSTAT_TXSHIFT;
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}
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}
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#endif /* __ASM_ARCH_UNCOMPRESS_H */
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