2004-02-15 20:46:45 +00:00
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/*
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*
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2007-01-01 18:51:03 +00:00
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* (c) 2004-2007 Laurent Vivier <Laurent@lvivier.info>
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2004-02-15 20:46:45 +00:00
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*
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*/
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2005-05-25 06:41:03 +00:00
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2004-06-09 12:24:24 +00:00
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.chip 68040
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2004-02-15 20:46:45 +00:00
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2004-06-07 22:13:00 +00:00
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.include "copymem.i"
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2004-06-07 18:51:24 +00:00
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.align 4
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2004-03-04 22:50:11 +00:00
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.global enter_kernel040
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enter_kernel040:
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link.w %fp,#0
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2004-02-15 20:46:45 +00:00
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/* get physical start address of kernel */
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move.l 8(%fp), %a0
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/* size of image to relocate */
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move.l 12(%fp), %d0
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2007-01-01 18:51:03 +00:00
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/* destination address */
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2004-02-23 23:32:54 +00:00
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move.l 16(%fp), %a2
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2005-09-19 22:15:34 +00:00
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/* bootenv address (EXPERIMENTAL) */
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move.l %a2, %a1
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add.l %d0, %a1
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sub.l #4096, %a1
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2005-09-21 23:23:18 +00:00
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move.l #0x80000000, %d4
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2005-09-19 22:15:34 +00:00
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2005-09-19 19:03:39 +00:00
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/* entry point */
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2005-09-19 22:15:34 +00:00
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move.l 20(%fp), %a3
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2005-09-19 19:03:39 +00:00
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2004-02-15 20:46:45 +00:00
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/* disable MMU */
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2004-03-04 22:50:11 +00:00
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moveq.l #0, %d1
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2004-03-06 01:00:18 +00:00
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movec %d1, %tc
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2004-03-04 22:50:11 +00:00
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movec %d1, %itt0
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movec %d1, %dtt0
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movec %d1, %itt1
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movec %d1, %dtt1
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2004-02-15 20:46:45 +00:00
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2004-02-23 23:32:54 +00:00
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/* copy kernel to destination address */
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2004-02-15 20:46:45 +00:00
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2004-06-07 22:13:00 +00:00
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copymem %a0, %a2, %d0
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2004-02-15 20:46:45 +00:00
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/* jump into kernel */
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2005-09-19 22:15:34 +00:00
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jmp %a3@
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2004-02-15 20:46:45 +00:00
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/* never comes here... I hope */
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unlk %fp
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rts
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2004-03-04 22:50:11 +00:00
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.global end_enter_kernel040
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end_enter_kernel040:
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