FreeCalypso > hg > freecalypso-citrine

annotate sysglue/sysinit.S @ 0:75a11d740a02

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initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 09 Jun 2016 00:02:41 +0000
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75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
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1 /*
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Mychaela Falconia <falcon@freecalypso.org>
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2 * This assembly module, which puts bits of code into several different
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Mychaela Falconia <falcon@freecalypso.org>
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3 * sections, contains those essential entry point etc bits which are common
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Mychaela Falconia <falcon@freecalypso.org>
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4 * to both the regular flashable build and the fc-xram development build.
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Mychaela Falconia <falcon@freecalypso.org>
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5 */
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6
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Mychaela Falconia <falcon@freecalypso.org>
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7 .section iram.vectors,"ax",%progbits
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Mychaela Falconia <falcon@freecalypso.org>
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8 .code 32
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9 #include "vectors.S"
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10
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11 .section xip.text,"ax",%progbits
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Mychaela Falconia <falcon@freecalypso.org>
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12 .code 32
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Mychaela Falconia <falcon@freecalypso.org>
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13 .globl _FlashorXram_entry
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Mychaela Falconia <falcon@freecalypso.org>
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14 _FlashorXram_entry:
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Mychaela Falconia <falcon@freecalypso.org>
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15 /* enable Calypso boot ROM for the ARM exception and IRQ/FIQ vectors */
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Mychaela Falconia <falcon@freecalypso.org>
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16 ldr r1, =0xFFFFFB10
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
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17 mov r2, #0x0100
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Mychaela Falconia <falcon@freecalypso.org>
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18 strh r2, [r1]
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
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19 /* now we can call any function w/o worry as to where it lives */
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Mychaela Falconia <falcon@freecalypso.org>
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20 /* clear int.bss and ext.bss, using bzero() from libc */
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Mychaela Falconia <falcon@freecalypso.org>
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21 ldr r0, =__intbss_start
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Mychaela Falconia <falcon@freecalypso.org>
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22 ldr r1, =__intbss_size
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Mychaela Falconia <falcon@freecalypso.org>
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23 bl bzero
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Mychaela Falconia <falcon@freecalypso.org>
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24 ldr r0, =__extbss_start
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Mychaela Falconia <falcon@freecalypso.org>
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25 ldr r1, =__extbss_size
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Mychaela Falconia <falcon@freecalypso.org>
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26 bl bzero
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Mychaela Falconia <falcon@freecalypso.org>
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27 /* we can start Nucleus now! */
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Mychaela Falconia <falcon@freecalypso.org>
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28 b INT_Initialize
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29
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Mychaela Falconia <falcon@freecalypso.org>
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30 /*
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Mychaela Falconia <falcon@freecalypso.org>
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31 * riviera/support/exception.c references exit()
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32 * The following kludge will allow us to pass the link for the time being
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Mychaela Falconia <falcon@freecalypso.org>
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33 * until we can find a better solution, such as hooking into DAR maybe.
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Mychaela Falconia <falcon@freecalypso.org>
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34 */
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35
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Mychaela Falconia <falcon@freecalypso.org>
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36 .globl exit
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Mychaela Falconia <falcon@freecalypso.org>
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37 exit:
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Mychaela Falconia <falcon@freecalypso.org>
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38 b .