summaryrefslogtreecommitdiff
path: root/arch/arm/lpc17xx/startup.s
blob: 3a997539263f4e9ebc4f54134bcc47a5dd58a70b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
/*****************************************************************************/
/* startup_LPC17xx.s: Startup file for LPC17xx device series                 */
/*****************************************************************************/
/* Version: CodeSourcery Sourcery G++ Lite (with CS3)                        */
/*****************************************************************************/


/*
//*** <<< Use Configuration Wizard in Context Menu >>> ***
*/

    .cpu cortex-m3
    .syntax unified


/*
// <h> Stack Configuration
//   <o> Stack Size (in Bytes) <0x0-0xFFFFFFFF:8>
// </h>
*/

    .equ    Stack_Size, 0x00000100
    .section ".stack", "w"
    .align  3
    .globl  __cs3_stack_mem
    .globl  __stack_start
    .globl  __cs3_stack_size
__cs3_stack_mem:
__stack_start:
    .if     Stack_Size
    .space  Stack_Size
    .endif
    .size   __cs3_stack_mem,  . - __cs3_stack_mem
    .set    __cs3_stack_size, . - __cs3_stack_mem


/*
// <h> Heap Configuration
//   <o>  Heap Size (in Bytes) <0x0-0xFFFFFFFF:8>
// </h>
*/

    .equ    Heap_Size,  0x00001000

    .section ".heap", "w"
    .align  3
    .globl  __cs3_heap_start
    .globl  __cs3_heap_end
__cs3_heap_start:
    .if     Heap_Size
    .space  Heap_Size
    .endif
__cs3_heap_end:


/* Vector Table */
    .section ".cs3.interrupt_vector_mutable"
    .globl  __cs3_interrupt_vector_cortex_m_mutable
    .type   __cs3_interrupt_vector_cortex_m_mutable, %object

__cs3_interrupt_vector_cortex_m_mutable:
    .long   __cs3_stack                 /* Top of Stack                 */
    .long   __cs3_reset_cortex_m        /* Reset Handler                */
    .long   NMI_Handler                 /* NMI Handler                  */
    .long   HardFault_Handler           /* Hard Fault Handler           */
    .long   MemManage_Handler           /* MPU Fault Handler            */
    .long   BusFault_Handler            /* Bus Fault Handler            */
    .long   UsageFault_Handler          /* Usage Fault Handler          */
    .long   0                           /* Reserved                     */
    .long   0                           /* Reserved                     */
    .long   0                           /* Reserved                     */
    .long   0                           /* Reserved                     */
    .long   vPortSVCHandler             /* SVCall Handler               */
    .long   DebugMon_Handler            /* Debug Monitor Handler        */
    .long   0                           /* Reserved                     */
    .long   xPortPendSVHandler          /* PendSV Handler               */
    .long   xPortSysTickHandler         /* SysTick Handler              */

    /* External Interrupts */
    .long   WDT_IRQHandler              /* 16: Watchdog Timer               */
    .long   TIMER0_IRQHandler           /* 17: Timer0                       */
    .long   TIMER1_IRQHandler           /* 18: Timer1                       */
    .long   TIMER2_IRQHandler           /* 19: Timer2                       */
    .long   TIMER3_IRQHandler           /* 20: Timer3                       */
    .long   UART0_IRQHandler            /* 21: UART0                        */
    .long   UART1_IRQHandler            /* 22: UART1                        */
    .long   UART2_IRQHandler            /* 23: UART2                        */
    .long   UART3_IRQHandler            /* 24: UART3                        */
    .long   PWM1_IRQHandler             /* 25: PWM1                         */
    .long   I2C0_IRQHandler             /* 26: I2C0                         */
    .long   I2C1_IRQHandler             /* 27: I2C1                         */
    .long   I2C2_IRQHandler             /* 28: I2C2                         */
    .long   SPI_IRQHandler              /* 29: SPI                          */
    .long   SSP0_IRQHandler             /* 30: SSP0                         */
    .long   SSP1_IRQHandler             /* 31: SSP1                         */
    .long   PLL0_IRQHandler             /* 32: PLL0 Lock (Main PLL)         */
    .long   RTC_IRQHandler              /* 33: Real Time Clock              */
    .long   EINT0_IRQHandler            /* 34: External Interrupt 0         */
    .long   EINT1_IRQHandler            /* 35: External Interrupt 1         */
    .long   EINT2_IRQHandler            /* 36: External Interrupt 2         */
    .long   EINT3_IRQHandler            /* 37: External Interrupt 3         */
    .long   ADC_IRQHandler              /* 38: A/D Converter                */
    .long   BOD_IRQHandler              /* 39: Brown-Out Detect             */
    .long   USB_IRQHandler              /* 40: USB                          */
    .long   CAN_IRQHandler              /* 41: CAN                          */
    .long   DMA_IRQHandler              /* 42: General Purpose DMA          */
    .long   I2S_IRQHandler              /* 43: I2S                          */
    .long   ENET_IRQHandler             /* 44: Ethernet                     */
    .long   RIT_IRQHandler              /* 45: Repetitive Interrupt Timer   */
    .long   MCPWM_IRQHandler            /* 46: Motor Control PWM            */
    .long   QEI_IRQHandler              /* 47: Quadrature Encoder Interface */
    .long   PLL1_IRQHandler             /* 48: PLL1 Lock (USB PLL)          */
    .long   USBActivity_IRQHandler      /* 49: USB Activity                 */
    .long   CANActivity_IRQHandler      /* 50: CAN Activity                 */

    .size   __cs3_interrupt_vector_cortex_m_mutable, . - __cs3_interrupt_vector_cortex_m_mutable


    .section ".cs3.interrupt_vector"
    .globl  __cs3_interrupt_vector_cortex_m
    .type   __cs3_interrupt_vector_cortex_m, %object

__cs3_interrupt_vector_cortex_m:
    .long   __cs3_stack                 /* Top of Stack                 */
    .long   __cs3_reset_cortex_m        /* Reset Handler                */
    .long   NMI_Handler                 /* NMI Handler                  */
    .long   HardFault_Handler           /* Hard Fault Handler           */
    .long   MemManage_Handler           /* MPU Fault Handler            */
    .long   BusFault_Handler            /* Bus Fault Handler            */
    .long   UsageFault_Handler          /* Usage Fault Handler          */
    .long   0                           /* Reserved - ROM CRC check ?   */


    .size   __cs3_interrupt_vector_cortex_m, . - __cs3_interrupt_vector_cortex_m


    .thumb

/* Fault handlers wrappers */

    .section .handlers,"x",%progbits
    .thumb_func
    .type   NMI_Handler, %function
NMI_Handler:
    MOV     R0, 2
    B       general_handler
    .type   HardFault_Handler, %function
HardFault_Handler:
    MOV     R0, 3
    B       general_handler
    .type   MemManage_Handler, %function
MemManage_Handler:
    MOV     R0, 4
    B       general_handler
    .type   BusFault_Handler, %function
BusFault_Handler:
    MOV     R0, 5
    B       general_handler
    .type   UsageFault_Handler, %function
UsageFault_Handler:
    MOV     R0, 6
    .type   general_handler, %function
general_handler:
    PUSH    {R4-R11}
    MOV     R1, SP
    MOV     R2, LR
    MOV     R4, LR
    BL      general_C_handler
    AND     R0, #7
    ORR     LR, R4, R0
    POP     {R4-R11}
    BX      LR

/* Reset Handler */

    .section .cs3.reset,"x",%progbits
    .thumb_func
    .globl  __cs3_reset_cortex_m
    .type   __cs3_reset_cortex_m, %function
__cs3_reset_cortex_m:
    .fnstart

    LDR     R0, =__rom_data_begin
    LDR     R1, =__rom_data_end
    LDR     R2, =__ram_data_begin
    
    MOV     R3, R0
    SUBS    R4, R1, R0
    MOV     R1, R3
    MOV     R0, R2
    MOV     R2, R4
    BL      startup_memcpy
    
    LDR     R0, =__bss_ram_begin
    MOV     R1, #0
    LDR     R2, =__bss_ram_len
    BL      startup_memset
    
    BL      lpc17xx_deinit_all
    BL      SystemInit
    B       _start
    .pool
    .cantunwind
    .fnend
    .size   __cs3_reset_cortex_m,.-__cs3_reset_cortex_m

    .section .handlers,"x",%progbits


    .weak   DebugMon_Handler
    .type   DebugMon_Handler, %function
DebugMon_Handler:
    B       .
    .size   DebugMon_Handler, . - DebugMon_Handler


/* IRQ Handlers */

    .globl  Default_Handler
    .type   Default_Handler, %function
Default_Handler:
    B       .
    .size   Default_Handler, . - Default_Handler

    .macro  IRQ handler
    .weak   \handler
    .set    \handler, Default_Handler
    .endm

    IRQ     WDT_IRQHandler
    IRQ     TIMER0_IRQHandler
    IRQ     TIMER1_IRQHandler
    IRQ     TIMER2_IRQHandler
    IRQ     TIMER3_IRQHandler
    IRQ     UART0_IRQHandler
    IRQ     UART1_IRQHandler
    IRQ     UART2_IRQHandler
    IRQ     UART3_IRQHandler
    IRQ     PWM1_IRQHandler
    IRQ     I2C0_IRQHandler
    IRQ     I2C1_IRQHandler
    IRQ     I2C2_IRQHandler
    IRQ     SPI_IRQHandler
    IRQ     SSP0_IRQHandler
    IRQ     SSP1_IRQHandler
    IRQ     PLL0_IRQHandler
    IRQ     RTC_IRQHandler
    IRQ     EINT0_IRQHandler
    IRQ     EINT1_IRQHandler
    IRQ     EINT2_IRQHandler
    IRQ     EINT3_IRQHandler
    IRQ     ADC_IRQHandler
    IRQ     BOD_IRQHandler
    IRQ     USB_IRQHandler
    IRQ     CAN_IRQHandler
    IRQ     DMA_IRQHandler
    IRQ     I2S_IRQHandler
    IRQ     ENET_IRQHandler
    IRQ     RIT_IRQHandler
    IRQ     MCPWM_IRQHandler
    IRQ     QEI_IRQHandler
    IRQ     PLL1_IRQHandler
    IRQ     USBActivity_IRQHandler
    IRQ     CANActivity_IRQHandler

    .end