target/msm8660_surf/atags.c

/* Copyright (c) 2009-2010, Code Aurora Forum. All rights reserved.
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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#include <reg.h>
#include <debug.h>
#include <smem.h>

#define SIZE_45M              0x02D00000 // 45M
#define EBI1_ADDR_1026M       0x40200000

#define SIZE_128M             0x08000000 // 128M
#define EBI1_ADDR_1152M       0x48000000

#define SIZE_256M             0x10000000 // 256M
#define EBI1_ADDR_1280M       0x50000000

#define SIZE_768M             0x30000000 // 256M + 512M

#define EBI1_CS1_ADDR_BASE    0x00A40024

unsigned* target_atag_mem(unsigned* ptr)
{
    unsigned value = 0;

    /* ATAG_MEM */
    *ptr++ = 4;
    *ptr++ = 0x54410002;
    *ptr++ = SIZE_45M;
    *ptr++ = EBI1_ADDR_1026M;

    *ptr++ = 4;
    *ptr++ = 0x54410002;
    *ptr++ = SIZE_128M;
    *ptr++ = EBI1_ADDR_1152M;

    value = readl(EBI1_CS1_ADDR_BASE);
    value = (value >> 8) & 0xFF;

    if (value == 0x50)
    {
        /* For 512MB RAM*/
        *ptr++ = 4;
        *ptr++ = 0x54410002;
        *ptr++ = SIZE_256M;
        *ptr++ = EBI1_ADDR_1280M;
    }
    else if (value == 0x60)
    {
        /* For 1GB RAM*/
        *ptr++ = 4;
        *ptr++ = 0x54410002;
        *ptr++ = SIZE_768M;
        *ptr++ = EBI1_ADDR_1280M;
    }

    return ptr;
}

void *target_get_scratch_address(void)
{
    return ((void *)SCRATCH_ADDR);
}