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annotate gsm-fw/sysglue/sysinit.S @ 631:7cf154cd3891

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gsm-fw/sysglue: prep for building flashable images
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Mon, 01 Sep 2014 17:04:19 +0000
parents e201f2130c9b
children 02d14592bb73
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1 /*
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2 * This assembly module, which puts bits of code into several different
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3 * sections, contains those essential entry point etc bits which are common
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4 * to both the regular flashable build and the fc-xram development build.
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5 */
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6
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7 .section iram.vectors,"ax",%progbits
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8 .code 32
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9 #include "vectors.S"
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11 .section xip.text,"ax",%progbits
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12 .code 32
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13 .globl _FlashorXram_entry
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14 _FlashorXram_entry:
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15 /* first order of business: copy iram.text to where it's supposed to be */
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16 ldr r8, =__iramtext_flash_addr
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17 ldr r9, =__iramtext_ram_addr
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18 ldr r10, =__iramtext_size
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19 1: ldmia r8!, {r0-r7}
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20 stmia r9!, {r0-r7}
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21 subs r10, r10, #0x20
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22 bhi 1b
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23 /* enable Calypso boot ROM for the ARM exception and IRQ/FIQ vectors */
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24 ldr r1, =0xFFFFFB10
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25 mov r2, #0x0100
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26 strh r2, [r1]
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27 /* now we can call any function w/o worry as to where it lives */
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28 /* clear int.bss and ext.bss, using bzero() from libc */
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29 ldr r0, =__intbss_start
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30 ldr r1, =__intbss_size
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31 bl bzero
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32 ldr r0, =__extbss_start
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33 ldr r1, =__extbss_size
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34 bl bzero
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35 /* we can start Nucleus now! */
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36 b INT_Initialize
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38 /*
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39 * riviera/support/exception.c references exit()
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40 * The following kludge will allow us to pass the link for the time being
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41 * until we can find a better solution, such as hooking into DAR maybe.
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42 */
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43
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44 .globl exit
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45 exit:
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46 b .