mirror of
https://github.com/Telecominfraproject/OpenCellular.git
synced 2026-01-10 01:21:49 +00:00
51df9457f4
When code is compiled for RAM (by re-enabling the flag in board.mk), use the following openocd commands to load it: reset halt load_image ../../../build/link/ec.RO.flat 0x20000000 bin reg 15 0x20000400 resume Note that you'll also usually need to disable a bunch of modules to make the code small enough to fit in RAM. Signed-off-by: Randall Spangler <rspangler@chromium.org> BUG=chrome-os-partner:7681 TEST=if it runs, it works Change-Id: I2b3cc69b361ad73706af3ff6de1ce952e8d5a0a9
231 lines
7.9 KiB
ArmAsm
231 lines
7.9 KiB
ArmAsm
/* Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
|
|
* Use of this source code is governed by a BSD-style license that can be
|
|
* found in the LICENSE file.
|
|
*
|
|
* Cortex-M CPU initialization
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
.text
|
|
|
|
.syntax unified
|
|
.code 16
|
|
|
|
.macro vector name
|
|
.long \name\()_handler
|
|
.weak \name\()_handler
|
|
.set \name\()_handler, default_handler
|
|
.endm
|
|
|
|
/* Exceptions vector */
|
|
vectors:
|
|
.long stack_end @ initial stack pointer
|
|
.long reset @ reset handler
|
|
vector nmi @ NMI handler
|
|
vector hard_fault @ HardFault handler
|
|
vector mpu_fault @ MPU fault handler
|
|
vector bus_fault @ Bus fault handler
|
|
vector usage_fault @ Usage fault handler
|
|
.long 0 @ reserved
|
|
.long 0 @ reserved
|
|
.long 0 @ reserved
|
|
.long 0 @ reserved
|
|
vector svc @ SWI
|
|
vector debug @ Debug handler
|
|
.long 0 @ reserved
|
|
vector pendsv @ PendSV handler
|
|
vector sys_tick @ SysTick handler
|
|
vector irq_LM4_IRQ_GPIOA @ IRQ 0 handler
|
|
vector irq_LM4_IRQ_GPIOB @ IRQ 1 handler
|
|
vector irq_LM4_IRQ_GPIOC @ IRQ 2 handler
|
|
vector irq_LM4_IRQ_GPIOD @ IRQ 3 handler
|
|
vector irq_LM4_IRQ_GPIOE @ IRQ 4 handler
|
|
vector irq_LM4_IRQ_UART0 @ IRQ 5 handler
|
|
vector irq_LM4_IRQ_UART1 @ IRQ 6 handler
|
|
vector irq_LM4_IRQ_SSI0 @ IRQ 7 handler
|
|
vector irq_LM4_IRQ_I2C0 @ IRQ 8 handler
|
|
.rept 5
|
|
.long 0 @ IRQ 9-13: reserved
|
|
.endr
|
|
vector irq_LM4_IRQ_ADC0_SS0 @ IRQ 14 handler
|
|
vector irq_LM4_IRQ_ADC0_SS1 @ IRQ 15 handler
|
|
vector irq_LM4_IRQ_ADC0_SS2 @ IRQ 16 handler
|
|
vector irq_LM4_IRQ_ADC0_SS3 @ IRQ 17 handler
|
|
vector irq_LM4_IRQ_WATCHDOG @ IRQ 18 handler
|
|
vector irq_LM4_IRQ_TIMER0A @ IRQ 19 handler
|
|
vector irq_LM4_IRQ_TIMER0B @ IRQ 20 handler
|
|
vector irq_LM4_IRQ_TIMER1A @ IRQ 21 handler
|
|
vector irq_LM4_IRQ_TIMER1B @ IRQ 22 handler
|
|
vector irq_LM4_IRQ_TIMER2A @ IRQ 23 handler
|
|
vector irq_LM4_IRQ_TIMER2B @ IRQ 24 handler
|
|
vector irq_LM4_IRQ_ACMP0 @ IRQ 25 handler
|
|
vector irq_LM4_IRQ_ACMP1 @ IRQ 26 handler
|
|
vector irq_LM4_IRQ_ACMP2 @ IRQ 27 handler
|
|
vector irq_LM4_IRQ_SYSCTRL @ IRQ 28 handler
|
|
vector irq_LM4_IRQ_EEPROM @ IRQ 29 handler
|
|
vector irq_LM4_IRQ_GPIOF @ IRQ 30 handler
|
|
vector irq_LM4_IRQ_GPIOG @ IRQ 31 handler
|
|
vector irq_LM4_IRQ_GPIOH @ IRQ 32 handler
|
|
vector irq_LM4_IRQ_UART2 @ IRQ 33 handler
|
|
vector irq_LM4_IRQ_SSI1 @ IRQ 34 handler
|
|
vector irq_LM4_IRQ_TIMER3A @ IRQ 35 handler
|
|
vector irq_LM4_IRQ_TIMER3B @ IRQ 36 handler
|
|
vector irq_LM4_IRQ_I2C1 @ IRQ 37 handler
|
|
.rept 5
|
|
.long 0 @ IRQ 38-42: reserved
|
|
.endr
|
|
vector irq_LM4_IRQ_HIBERNATE @ IRQ 43 handler
|
|
.long 0 @ IRQ 44: reserved
|
|
.long 0 @ IRQ 45: reserved
|
|
vector irq_LM4_IRQ_UDMA_SOFTWARE @ IRQ 46 handler
|
|
vector irq_LM4_IRQ_UDMA_ERROR @ IRQ 47 handler
|
|
vector irq_LM4_IRQ_ADC1_SS0 @ IRQ 48 handler
|
|
vector irq_LM4_IRQ_ADC1_SS1 @ IRQ 49 handler
|
|
vector irq_LM4_IRQ_ADC1_SS2 @ IRQ 50 handler
|
|
vector irq_LM4_IRQ_ADC1_SS3 @ IRQ 51 handler
|
|
.long 0 @ IRQ 52: reserved
|
|
.long 0 @ IRQ 53: reserved
|
|
vector irq_LM4_IRQ_GPIOJ @ IRQ 54 handler
|
|
vector irq_LM4_IRQ_GPIOK @ IRQ 55 handler
|
|
vector irq_LM4_IRQ_GPIOL @ IRQ 56 handler
|
|
vector irq_LM4_IRQ_SSI2 @ IRQ 57 handler
|
|
vector irq_LM4_IRQ_SSI3 @ IRQ 58 handler
|
|
vector irq_LM4_IRQ_UART3 @ IRQ 59 handler
|
|
vector irq_LM4_IRQ_UART4 @ IRQ 60 handler
|
|
vector irq_LM4_IRQ_UART5 @ IRQ 61 handler
|
|
vector irq_LM4_IRQ_UART6 @ IRQ 62 handler
|
|
vector irq_LM4_IRQ_UART7 @ IRQ 63 handler
|
|
.rept 4
|
|
.long 0 @ IRQ 64-67: reserved
|
|
.endr
|
|
vector irq_LM4_IRQ_I2C2 @ IRQ 68 handler
|
|
vector irq_LM4_IRQ_I2C3 @ IRQ 69 handler
|
|
vector irq_LM4_IRQ_TIMER4A @ IRQ 70 handler
|
|
vector irq_LM4_IRQ_TIMER4B @ IRQ 71 handler
|
|
.rept 20
|
|
.long 0 @ IRQ 72-91: reserved
|
|
.endr
|
|
vector irq_LM4_IRQ_TIMER5A @ IRQ 92 handler
|
|
vector irq_LM4_IRQ_TIMER5B @ IRQ 93 handler
|
|
vector irq_LM4_IRQ_TIMERW0A @ IRQ 94 handler
|
|
vector irq_LM4_IRQ_TIMERW0B @ IRQ 95 handler
|
|
vector irq_LM4_IRQ_TIMERW1A @ IRQ 96 handler
|
|
vector irq_LM4_IRQ_TIMERW1B @ IRQ 97 handler
|
|
vector irq_LM4_IRQ_TIMERW2A @ IRQ 98 handler
|
|
vector irq_LM4_IRQ_TIMERW2B @ IRQ 99 handler
|
|
vector irq_LM4_IRQ_TIMERW3A @ IRQ 100 handler
|
|
vector irq_LM4_IRQ_TIMERW3B @ IRQ 101 handler
|
|
vector irq_LM4_IRQ_TIMERW4A @ IRQ 102 handler
|
|
vector irq_LM4_IRQ_TIMERW4B @ IRQ 103 handler
|
|
vector irq_LM4_IRQ_TIMERW5A @ IRQ 104 handler
|
|
vector irq_LM4_IRQ_TIMERW5B @ IRQ 105 handler
|
|
vector irq_LM4_IRQ_SYS_EXCEPTION @ IRQ 106 handler
|
|
vector irq_LM4_IRQ_SYS_PECI @ IRQ 107 handler
|
|
vector irq_LM4_IRQ_LPC @ IRQ 108 handler
|
|
vector irq_LM4_IRQ_I2C4 @ IRQ 109 handler
|
|
vector irq_LM4_IRQ_I2C5 @ IRQ 110 handler
|
|
vector irq_LM4_IRQ_GPIOM @ IRQ 111 handler
|
|
vector irq_LM4_IRQ_GPION @ IRQ 112 handler
|
|
.long 0 @ IRQ 113: reserved
|
|
vector irq_LM4_IRQ_FAN @ IRQ 114 handler
|
|
.long 0 @ IRQ 115: reserved
|
|
vector irq_LM4_IRQ_GPIOP @ IRQ 116 handler
|
|
vector irq_LM4_IRQ_GPIOP1 @ IRQ 117 handler
|
|
vector irq_LM4_IRQ_GPIOP2 @ IRQ 118 handler
|
|
vector irq_LM4_IRQ_GPIOP3 @ IRQ 119 handler
|
|
vector irq_LM4_IRQ_GPIOP4 @ IRQ 120 handler
|
|
vector irq_LM4_IRQ_GPIOP5 @ IRQ 121 handler
|
|
vector irq_LM4_IRQ_GPIOP6 @ IRQ 122 handler
|
|
vector irq_LM4_IRQ_GPIOP7 @ IRQ 123 handler
|
|
vector irq_LM4_IRQ_GPIOQ @ IRQ 124 handler
|
|
vector irq_LM4_IRQ_GPIOQ1 @ IRQ 125 handler
|
|
vector irq_LM4_IRQ_GPIOQ2 @ IRQ 126 handler
|
|
vector irq_LM4_IRQ_GPIOQ3 @ IRQ 127 handler
|
|
vector irq_LM4_IRQ_GPIOQ4 @ IRQ 128 handler
|
|
vector irq_LM4_IRQ_GPIOQ5 @ IRQ 129 handler
|
|
vector irq_LM4_IRQ_GPIOQ6 @ IRQ 130 handler
|
|
vector irq_LM4_IRQ_GPIOQ7 @ IRQ 131 handler
|
|
.rept 108
|
|
.long 0 @ IRQ 132-239: reserved
|
|
.endr
|
|
|
|
.global reset
|
|
.thumb_func
|
|
reset:
|
|
/* set the vector table on our current code */
|
|
adr r1, vectors
|
|
ldr r2, =0xE000ED08 /* VTABLE register in SCB*/
|
|
str r1, [r2]
|
|
/* Clear BSS */
|
|
mov r0, #0
|
|
ldr r1,_bss_start
|
|
ldr r2,_bss_end
|
|
bss_loop:
|
|
cmp r1, r2
|
|
it lt
|
|
strlt r0, [r1], #4
|
|
blt bss_loop
|
|
|
|
#ifndef COMPILE_FOR_RAM
|
|
/* Copy initialized data to Internal RAM */
|
|
ldr r0,_ro_end
|
|
ldr r1,_data_start
|
|
ldr r2,_data_end
|
|
data_loop:
|
|
ldr r3, [r0], #4
|
|
cmp r1, r2
|
|
it lt
|
|
strlt r3, [r1], #4
|
|
blt data_loop
|
|
#endif
|
|
|
|
/**
|
|
* Set stack pointer
|
|
* already done my Cortex-M hardware but this allows software to
|
|
* jump directly to reset function or to run on other ARM
|
|
*/
|
|
ldr r0, =stack_end
|
|
mov sp, r0
|
|
|
|
/* jump to C code */
|
|
bl main
|
|
/* we should not return here */
|
|
/* TODO check error code ? */
|
|
fini_loop:
|
|
b fini_loop
|
|
|
|
/* default exception handler */
|
|
.thumb_func
|
|
default_handler:
|
|
b panic
|
|
|
|
_bss_start:
|
|
.long __bss_start
|
|
_bss_end:
|
|
.long __bss_end
|
|
_data_start:
|
|
.long __data_start
|
|
_data_end:
|
|
.long __data_end
|
|
_ro_end:
|
|
.long __ro_end
|
|
|
|
/* Dummy functions to avoid linker complaints */
|
|
.global __aeabi_unwind_cpp_pr0
|
|
.global __aeabi_unwind_cpp_pr1
|
|
.global __aeabi_unwind_cpp_pr2
|
|
__aeabi_unwind_cpp_pr0:
|
|
__aeabi_unwind_cpp_pr1:
|
|
__aeabi_unwind_cpp_pr2:
|
|
bx lr
|
|
|
|
.section .bss
|
|
|
|
/* Reserve space for system stack */
|
|
stack_start:
|
|
.space CONFIG_STACK_SIZE, 0
|
|
stack_end:
|
|
.globl stack_end
|
|
|