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1 | /* linux/include/asm-arm/arch-s3c2410/uncompress.h |
2 | * | |
dd1313a1 BD |
3 | * Copyright (c) 2003, 2007 Simtec Electronics |
4 | * http://armlinux.simtec.co.uk/ | |
f056076e | 5 | * Ben Dooks <ben@simtec.co.uk> |
1da177e4 LT |
6 | * |
7 | * S3C2410 - uncompress code | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License version 2 as | |
11 | * published by the Free Software Foundation. | |
1da177e4 LT |
12 | */ |
13 | ||
14 | #ifndef __ASM_ARCH_UNCOMPRESS_H | |
15 | #define __ASM_ARCH_UNCOMPRESS_H | |
16 | ||
a14a26ac | 17 | #include <asm/arch/regs-gpio.h> |
1da177e4 LT |
18 | #include <asm/arch/map.h> |
19 | ||
20 | /* working in physical space... */ | |
21 | #undef S3C2410_GPIOREG | |
0367a8d3 | 22 | #define S3C2410_GPIOREG(x) ((S3C24XX_PA_GPIO + (x))) |
a14a26ac BD |
23 | |
24 | #include <asm/plat-s3c/uncompress.h> | |
1da177e4 | 25 | |
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26 | static inline int is_arm926(void) |
27 | { | |
28 | unsigned int cpuid; | |
29 | ||
30 | asm volatile ("mrc p15, 0, %0, c1, c0, 0" : "=r" (cpuid)); | |
31 | ||
32 | return ((cpuid & 0xff0) == 0x260); | |
33 | } | |
34 | ||
a14a26ac | 35 | static void arch_detect_cpu(void) |
1da177e4 | 36 | { |
a14a26ac | 37 | unsigned int cpuid; |
1da177e4 | 38 | |
bd7b1702 | 39 | cpuid = *((volatile unsigned int *)S3C2410_GSTATUS1); |
1da177e4 | 40 | cpuid &= S3C2410_GSTATUS1_IDMASK; |
1da177e4 | 41 | |
5c49218a | 42 | if (is_arm926() || cpuid == S3C2410_GSTATUS1_2440 || |
a14a26ac BD |
43 | cpuid == S3C2410_GSTATUS1_2442) { |
44 | fifo_mask = S3C2440_UFSTAT_TXMASK; | |
45 | fifo_max = 63 << S3C2440_UFSTAT_TXSHIFT; | |
1da177e4 | 46 | } else { |
a14a26ac BD |
47 | fifo_mask = S3C2410_UFSTAT_TXMASK; |
48 | fifo_max = 15 << S3C2410_UFSTAT_TXSHIFT; | |
1da177e4 | 49 | } |
1da177e4 LT |
50 | } |
51 | ||
1da177e4 | 52 | #endif /* __ASM_ARCH_UNCOMPRESS_H */ |