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annotate gsm-fw/lldbg/entry.S @ 992:a7b0b426f9ca

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target-utils: boot ROM UART autodetection revamped The new implementation should work with both the familiar Calypso C035 boot ROM version found in our regular targets as well as the older Calypso F741979B version found on the vintage D-Sample board.
author Mychaela Falconia <falcon@ivan.Harhan.ORG>
date Wed, 30 Dec 2015 21:28:41 +0000
parents f5affe83ba2d
children
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865
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1 .section "ext.ram","aw",%nobits
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2 .balign 4
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3 .globl lldbg_stack
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4 lldbg_stack:
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5 .space 2048
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6 lldbg_init_sp:
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7
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8 .text
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9 .code 32
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10 .globl lldbg_entry
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11 lldbg_entry:
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12 stmfd sp!, {r0-r12,lr}
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13 mrs r0, CPSR
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14 mov r1, sp
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15 /* supervisor mode, disable all interrupts */
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16 msr CPSR_c, #0xd3
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17 ldr sp, =lldbg_init_sp
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18 /* save entry SP and CPSR */
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19 ldr r2, =lldbg_entry_cpsr
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20 str r0, [r2]
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21 ldr r2, =lldbg_entry_sp
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22 str r1, [r2]
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23 b lldbg_main