FreeCalypso > hg > freecalypso-sw

annotate target-utils/compalstage/compalstage.S @ 975:0d7cc054ef72

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rvinterf/lowlevel: updates for the new knowledge of TM predating ETM
author Mychaela Falconia <falcon@ivan.Harhan.ORG>
date Sun, 15 Nov 2015 04:26:10 +0000
parents 48c08499cede
children
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1 .text
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2 .org 0
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3
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4 #if THUMB_ENTRY
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5 .code 16
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6 bx pc
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7 nop
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8 #endif
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9 .code 32
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10
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11 /* delay loop like OsmocomBB does */
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12 mov r1, #0xa0000
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13 1: subs r1, r1, #1
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14 bne 1b
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15 /* enable the Calypso boot ROM */
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16 ldr r1, reg_addr
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17 mov r2, #0x0100
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18 strh r2, [r1]
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19 /* jump to it! */
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20 mov pc, #0
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21 reg_addr:
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22 .word 0xFFFFFB10
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23
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24 #if PAD_TO_1003
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25 .org 0x3be0
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26 .ascii "1003"
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27 #endif