view gsm-fw/sysglue/sysinit.S @ 625:29dae53ad969
top level README: status update
author
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date
Sun, 31 Aug 2014 03:22:06 +0000 (2014-08-31)
parents
e201f2130c9b
children
7cf154cd3891
line source
+ − /*
+ − * This assembly module, which puts bits of code into several different
+ − * sections, contains those essential entry point etc bits which are common
+ − * to both the regular flashable build and the fc-xram development build.
+ − */
+ −
+ − .section iram.vectors,"ax",%progbits
+ − .code 32
+ − /* ARM exceptions */
+ − b _arm_undefined
+ − b _arm_swi
+ − b _arm_abort_prefetch
+ − b _arm_abort_data
+ − b _arm_reserved
+ − /* IRQ */
+ − b _INT_IRQ
+ − /* FIQ */
+ − b _INT_FIQ
+ −
+ − .section xip.text,"ax",%progbits
+ − .code 32
+ − .globl _FlashorXram_entry
+ − _FlashorXram_entry:
+ − /* first order of business: copy iram.text to where it's supposed to be */
+ − ldr r8, =__iramtext_flash_addr
+ − ldr r9, =__iramtext_ram_addr
+ − ldr r10, =__iramtext_size
+ − 1: ldmia r8!, {r0-r7}
+ − stmia r9!, {r0-r7}
+ − subs r10, r10, #0x20
+ − bhi 1b
+ − /* enable Calypso boot ROM for the ARM exception and IRQ/FIQ vectors */
+ − ldr r1, =0xFFFFFB10
+ − mov r2, #0x0100
+ − strh r2, [r1]
+ − /* now we can call any function w/o worry as to where it lives */
+ − /* clear int.bss and ext.bss, using bzero() from libc */
+ − ldr r0, =__intbss_start
+ − ldr r1, =__intbss_size
+ − bl bzero
+ − ldr r0, =__extbss_start
+ − ldr r1, =__extbss_size
+ − bl bzero
+ − /* we can start Nucleus now! */
+ − b INT_Initialize
+ −
+ − /*
+ − * riviera/support/exception.c references exit()
+ − * The following kludge will allow us to pass the link for the time being
+ − * until we can find a better solution, such as hooking into DAR maybe.
+ − */
+ −
+ − .globl exit
+ − exit:
+ − b .