4.104.114.84.95
Last change
on this file since 7f01f89 was
206e590,
checked in by Ralf Corsepius <ralf.corsepius@…>, on 04/01/04 at 10:11:58
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2004-04-01 Ralf Corsepius <ralf_corsepius@…>
- startup/boardinit.S: Include <rtems/asm.h> instead of <asm.h>.
- include/bsp.h: Include <rtems/clockdrv.h> instead of <clockdrv.h>.
- include/bsp.h: Include <rtems/console.h> instead of <console.h>.
- include/bsp.h: Include <rtems/iosupp.h> instead of <iosupp.h>.
- console/console.c: Include <rtems/ringbuf.h> instead of <ringbuf.h>.
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-
Property mode set to
100644
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File size:
1.5 KB
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Line | |
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1 | /* |
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2 | * boardinit.s |
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3 | * |
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4 | * Start code for the LEON. |
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5 | * |
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6 | * $Id$ |
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7 | */ |
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8 | |
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9 | #include <rtems/asm.h> |
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10 | #include <leon.h> |
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11 | |
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12 | .global __bsp_board_init |
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13 | |
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14 | __bsp_board_init: |
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15 | |
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16 | /* Check if LEON is initialised. If not, this means that we are |
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17 | running on the simulator. Initiate some of the parameters |
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18 | that are done by the boot-prom otherwise. |
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19 | */ |
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20 | |
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21 | set SYM(LEON_REG), %l0 ! %l0 = base address of peripherals |
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22 | ld [%l0+LEON_REG_CACHECTRL_OFFSET], %l1 ! Check if LEON has been initialised |
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23 | andcc %l1, 3, %g0 |
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24 | bne 2f |
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25 | nop |
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26 | |
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27 | |
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28 | flush |
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29 | set 0x1000f, %l1 |
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30 | st %l1, [%l0 + LEON_REG_CACHECTRL_OFFSET] ! enable caches |
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31 | ld [%l0 + LEON_REG_SIM_ROM_SIZE_OFFSET], %g1 ! load simulator rom size |
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32 | clr %l2 |
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33 | srl %g1, 13, %g1 ! calculate appropriate rom size |
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34 | 1: |
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35 | srl %g1, 1, %g1 |
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36 | tst %g1 |
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37 | bne,a 1b |
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38 | inc %l2 |
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39 | sll %l2, 14, %l2 |
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40 | st %l2, [%l0 + LEON_REG_MEMCFG1_OFFSET] ! set prom size in memcfg1 |
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41 | |
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42 | set 0, %l2 |
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43 | ld [%l0 + LEON_REG_SIM_RAM_SIZE_OFFSET], %g2 ! load simulator ram size |
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44 | srl %g2, 13, %g1 ! calculate appropriate ram size |
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45 | 1: |
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46 | srl %g1, 1, %g1 |
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47 | tst %g1 |
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48 | bne,a 1b |
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49 | inc %l2 |
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50 | sll %l2, 9, %l2 |
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51 | or %l2, 0x20, %l2 ! set 32-bit ram width by default |
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52 | st %l2, [%l0 + LEON_REG_MEMCFG2_OFFSET] ! set ram size in memcfg2 |
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53 | |
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54 | set SYM(RAM_START), %l1 ! Cannot use RAM_END due to bug in linker |
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55 | set SYM(RAM_SIZE), %l2 |
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56 | add %l1, %l2, %sp |
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57 | set 49, %l2 |
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58 | st %l2, [%l0 + LEON_REG_SCALER_LOAD_OFFSET] ! scaler reload register |
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59 | st %l2, [%l0 + LEON_REG_SCALERCNT_OFFSET] ! scaler counter register |
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60 | |
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61 | 2: |
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62 | retl |
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63 | nop |
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64 | |
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65 | /* end of file */ |
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