include/asm-arm/arch-s3c24a0/hardware.h

   1 /*
   2  * include/asm-arm/arch-s3c24a0/hardware.h
   3  *
   4  * $Id: hardware.h,v 1.3 2006/12/12 13:13:07 gerg Exp $
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 /*
  22  * based on S3C2410.h modified by hcyun <heechul.yun@samsung.com>
  23  * modified for hybrid MM support (uClinux and Linux) by Hyok S. Choi
  24  */
  25
  26 #ifndef __ASM_ARCH_HARDWARE_H
  27 #define __ASM_ARCH_HARDWARE_H
  28
  29 #ifndef CONFIG_MMU
  30 /* called on reserve_node_zero() for reserving mmu section table */
  31 #ifndef CONFIG_DRAM_BASE
  32   #define CONFIG_DRAM_BASE 0x10000000
  33 #endif
  34
  35 #define MACH_RESERVE_BOOTMEM()  do { \
  36     reserve_bootmem_node(pgdat, (CONFIG_DRAM_BASE + 0x4000), 0x4000); \
  37   } while(0)
  38
  39 #define MACH_FREE_BOOTMEM()
  40
  41 #endif /* !CONFIG_MMU */
  42
  43 #define PCIO_BASE               0
  44
  45 #if defined(CONFIG_DRAM_BASE) && defined(CONFIG_DRAM_SIZE)
  46   #define PA_SDRAM_BASE          (CONFIG_DRAM_BASE)
  47   #define MEM_SIZE               (CONFIG_DRAM_SIZE)
  48 #else
  49   #define PA_SDRAM_BASE          0x10000000
  50   #define MEM_SIZE               0x04000000
  51 #endif
  52
  53 /*
  54  * S3C24A0 internal I/O mappings
  55  *
  56  * We have the following mapping:
  57  *              phys            virt
  58  *              40000000        e0000000
  59  */
  60
  61 #ifdef CONFIG_MMU
  62
  63 #define VIO_BASE                0xe0000000      /* virtual start of IO space */
  64 #define PIO_START               0x40000000      /* physical start of IO space */
  65
  66 #define io_p2v(x) ((x) | 0xa0000000)
  67 #define io_v2p(x) ((x) & ~0xa0000000)
  68
  69 #define io_p2v_isp(x) ((x) + 0xec000000)
  70 #define io_v2p_isp(x) ((x) - 0xec000000)
  71
  72
  73 #else /* UCLINUX */
  74
  75 #define PIO_START               0x40000000
  76 #define VIO_BASE                PIO_START
  77
  78 #define io_p2v(x) (x)
  79 #define io_v2p(x) (x)
  80
  81 #define io_p2v_isp(x) (x)
  82 #define io_v2p_isp(x) (x)
  83
  84
  85 #endif  /* CONFIG_MMU */
  86
  87
  88 #ifndef __ASSEMBLY__
  89 #include <asm/types.h>
  90
  91 /*
  92  * This __REG() version gives the same results as the one above, except
  93  * that we are fooling gcc some how so it generates far better and smaller
  94  * assembly code for access to contigous registers. It's a shame that gcc
  95  * doesn't guess this by itself
  96  */
  97 typedef struct { volatile u32 offset[4096]; } __regbase;
  98 #define __REGP(x)       ((__regbase *)((x)&~4095))->offset[((x)&4095)>>2]
  99 #define __REG(x)        __REGP(io_p2v(x))
 100
 101 /* Let's kick gcc's ass again... */
 102 # define __REG2(x,y)    \
 103         ( __builtin_constant_p(y) ? (__REG((x) + (y))) \
 104                                   : (*(volatile u32 *)((u32)&__REG(x) + (y))) )
 105
 106 #define __PREG(x)       (io_v2p((u32)&(x)))
 107
 108 /*SEO add  to allocate vertual memory address for ISP1583 */
 109 #define __REG_ISP(x)    io_p2v_isp(x)
 110 #define __PREG_ISP(x)   io_v2p_isp(x)
 111
 112
 113 #else   /* __ASSEMBLY__ */
 114
 115 # define __REG(x)       io_p2v(x)
 116 # define __PREG(x)      io_v2p(x)
 117
 118 #endif  /* __ASSEMBLY__ */
 119
 120 #include "S3C24A0.h"
 121
 122 #ifndef __ASSEMBLY__
 123
 124 #define EINT_PULLUP_EN          (0)
 125 #define EINT_PULLUP_DIS         (1)
 126
 127 #define EINT_LOW_LEVEL          (0x0)
 128 #define EINT_HIGH_LEVEL         (0x1)
 129 #define EINT_FALLING_EDGE       (0x2)
 130 #define EINT_RISING_EDGE        (0x4)
 131 #define EINT_BOTH_EDGES         (0x6)
 132
 133 extern int set_external_irq(int irq, int edge, int pullup);
 134
 135 #endif
 136
 137 #ifdef CONFIG_ARCH_SMDK24A0
 138 #include "smdk.h"
 139 #else
 140 #error not defined board
 141 #endif
 142
 143 #endif /* __ASM_ARCH_HARDWARE_H */