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#include <arch/mm/page.h>
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#include <arch/mm/page.h>
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#include <genarch/mm/page_ht.h>
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#include <genarch/mm/page_ht.h>
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#include <mm/asid.h>
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#include <mm/asid.h>
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#include <arch/mm/asid.h>
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#include <arch/mm/asid.h>
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#include <arch/mm/vhpt.h>
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#include <arch/types.h>
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#include <arch/types.h>
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#include <typedefs.h>
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#include <typedefs.h>
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#include <print.h>
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#include <print.h>
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#include <mm/page.h>
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#include <mm/page.h>
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#include <mm/frame.h>
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#include <mm/frame.h>
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void set_environment(void)
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void set_environment(void)
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{
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{
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    region_register rr;
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    region_register rr;
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    pta_register pta;  
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    pta_register pta;  
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    int i;
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    int i;
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#ifdef CONFIG_VHPT 
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    __address vhpt_base;
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#endif
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    /*
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    /*
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     * First set up kernel region register.
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     * First set up kernel region register.
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     * This is redundant (see start.S) but we keep it here just for sure.
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     * This is redundant (see start.S) but we keep it here just for sure.
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     */
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     */
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        rr_write(i, rr.word);
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        rr_write(i, rr.word);
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        srlz_i();
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        srlz_i();
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        srlz_d();
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        srlz_d();
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    }
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    }
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#ifdef CONFIG_VHPT 
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    vhpt_base = vhpt_set_up();
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#endif
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    /*
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    /*
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     * Set up PTA register.
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     * Set up PTA register.
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     */
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     */
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    pta.word = pta_read();
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    pta.word = pta_read();
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#ifndef CONFIG_VHPT
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    pta.map.ve = 0;                   /* disable VHPT walker */
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    pta.map.ve = 0;                   /* disable VHPT walker */
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    pta.map.base = 0 >> PTA_BASE_SHIFT;
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#else
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    pta.map.ve = 1;                   /* enable VHPT walker */
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    pta.map.base = vhpt_base >> PTA_BASE_SHIFT;
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#endif
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    pta.map.vf = 1;                   /* large entry format */
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    pta.map.vf = 1;                   /* large entry format */
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    pta.map.size = VHPT_WIDTH;
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    pta.map.size = VHPT_WIDTH;
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    pta.map.base = VHPT_BASE >> PTA_BASE_SHIFT;
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    pta_write(pta.word);
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    pta_write(pta.word);
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    srlz_i();
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    srlz_i();
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    srlz_d();
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    srlz_d();
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}
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}
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