📄 sysinit.lst
字号:
\ ??pll_init_1:
\ 000000F4 0xBD02 POP {R1,PC} ;; return
174 }
175
176 //-------------------------------------------------------------------------*
177 //函数名: set_sys_dividers *
178 //功 能: 设置系系统分频器 *
179 //参 数: 预分频值 *
180 //返 回: 无 *
181 //说 明: 此函数必须放在RAM里执行，否则会产生错误e2448。当FLASH时钟分频改变*
182 // 时，必须禁止FLASH的预取功能。在时钟分频改变之后，必须延时一小段时*
183 // 间才可以从新使能预取功能。 *
184 //-------------------------------------------------------------------------*
\ In section .textrw, align 4, keep-with-next
185 __ramfunc void set_sys_dividers(uint32 outdiv1, uint32 outdiv2, uint32 outdiv3, uint32 outdiv4)
186 {
\ set_sys_dividers:
\ 00000000 0xB470 PUSH {R4-R6}
187 uint32 temp_reg;
188 uint8 i;
189 //保存FMC_PFAPR当前的值
190 temp_reg = FMC_PFAPR;
\ 00000002 0x4C10 LDR.N R4,??set_sys_dividers_0 ;; 0x4001f000
\ 00000004 0x6824 LDR R4,[R4, #+0]
191
192 //通过M&PFD置位M0PFD来禁止预取功能
193 FMC_PFAPR |= FMC_PFAPR_M7PFD_MASK | FMC_PFAPR_M6PFD_MASK | FMC_PFAPR_M5PFD_MASK
194 | FMC_PFAPR_M4PFD_MASK | FMC_PFAPR_M3PFD_MASK | FMC_PFAPR_M2PFD_MASK
195 | FMC_PFAPR_M1PFD_MASK | FMC_PFAPR_M0PFD_MASK;
\ 00000006 0x4D0F LDR.N R5,??set_sys_dividers_0 ;; 0x4001f000
\ 00000008 0x682D LDR R5,[R5, #+0]
\ 0000000A 0xF455 0x057F ORRS R5,R5,#0xFF0000
\ 0000000E 0x4E0D LDR.N R6,??set_sys_dividers_0 ;; 0x4001f000
\ 00000010 0x6035 STR R5,[R6, #+0]
196
197 //给时钟分频器设置期望值
198 SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIV1(outdiv1) | SIM_CLKDIV1_OUTDIV2(outdiv2)
199 | SIM_CLKDIV1_OUTDIV3(outdiv3) | SIM_CLKDIV1_OUTDIV4(outdiv4);
\ 00000012 0x0609 LSLS R1,R1,#+24
\ 00000014 0xF011 0x6170 ANDS R1,R1,#0xF000000
\ 00000018 0xEA51 0x7000 ORRS R0,R1,R0, LSL #+28
\ 0000001C 0x0511 LSLS R1,R2,#+20
\ 0000001E 0xF411 0x0170 ANDS R1,R1,#0xF00000
\ 00000022 0x4308 ORRS R0,R1,R0
\ 00000024 0x0419 LSLS R1,R3,#+16
\ 00000026 0xF411 0x2170 ANDS R1,R1,#0xF0000
\ 0000002A 0x4308 ORRS R0,R1,R0
\ 0000002C 0x4906 LDR.N R1,??set_sys_dividers_0+0x4 ;; 0x40048044
\ 0000002E 0x6008 STR R0,[R1, #+0]
200
201 //等待分频器改变
202 for (i = 0 ; i < outdiv4 ; i++)
\ 00000030 0x2000 MOVS R0,#+0
\ 00000032 0xE000 B.N ??set_sys_dividers_1
\ ??set_sys_dividers_2:
\ 00000034 0x1C40 ADDS R0,R0,#+1
\ ??set_sys_dividers_1:
\ 00000036 0xB2C0 UXTB R0,R0 ;; ZeroExt R0,R0,#+24,#+24
\ 00000038 0x4298 CMP R0,R3
\ 0000003A 0xD3FB BCC.N ??set_sys_dividers_2
203 {}
204
205 //从新存FMC_PFAPR的原始值
206 FMC_PFAPR = temp_reg;
\ 0000003C 0x4801 LDR.N R0,??set_sys_dividers_0 ;; 0x4001f000
\ 0000003E 0x6004 STR R4,[R0, #+0]
207
208 return;
\ 00000040 0xBC70 POP {R4-R6}
\ 00000042 0x4770 BX LR ;; return
\ ??set_sys_dividers_0:
\ 00000044 0x4001F000 DC32 0x4001f000
\ 00000048 0x40048044 DC32 0x40048044
209 }
\ In section .text, align 4, keep-with-next
\ ??DataTable3:
\ 00000000 0x40048038 DC32 0x40048038
\ In section .text, align 4, keep-with-next
\ ??DataTable3_1:
\ 00000000 0x........ DC32 core_clk_mhz
\ In section .text, align 4, keep-with-next
\ ??DataTable3_2:
\ 00000000 0x........ DC32 core_clk_khz
\ In section .text, align 4, keep-with-next
\ ??DataTable3_3:
\ 00000000 0x40048044 DC32 0x40048044
\ In section .text, align 4, keep-with-next
\ ??DataTable3_4:
\ 00000000 0x........ DC32 periph_clk_khz
\ In section .text, align 4, keep-with-next
\ ??DataTable3_5:
\ 00000000 0x40048004 DC32 0x40048004
\ In section .text, align 4, keep-with-next
\ ??DataTable3_6:
\ 00000000 0x40049018 DC32 0x40049018
\ In section .text, align 4, keep-with-next
\ ??DataTable3_7:
\ 00000000 0x40048040 DC32 0x40048040
\ In section .text, align 4, keep-with-next
\ ??DataTable3_8:
\ 00000000 0x4004B00C DC32 0x4004b00c
\ In section .text, align 4, keep-with-next
\ ??DataTable3_9:
\ 00000000 0x40064001 DC32 0x40064001
\ In section .text, align 4, keep-with-next
\ ??DataTable3_10:
\ 00000000 0x40048034 DC32 0x40048034
\ In section .text, align 4, keep-with-next
\ ??DataTable3_11:
\ 00000000 0x4007C008 DC32 0x4007c008
\ In section .text, align 4, keep-with-next
\ ??DataTable3_12:
\ 00000000 0x40064000 DC32 0x40064000
\ In section .text, align 4, keep-with-next
\ ??DataTable3_13:
\ 00000000 0x40064006 DC32 0x40064006
\ In section .text, align 4, keep-with-next
\ ??DataTable3_14:
\ 00000000 0x40064004 DC32 0x40064004
\ In section .text, align 4, keep-with-next
\ ??DataTable3_15:
\ 00000000 0x40064005 DC32 0x40064005
210
211
212
213
214
215
Maximum stack usage in bytes:
.cstack Function
------- --------
0 fb_clk_init
8 pll_init
8 -> set_sys_dividers
12 set_sys_dividers
8 sysinit
8 -> fb_clk_init
8 -> pll_init
8 -> trace_clk_init
0 trace_clk_init
Section sizes:
Bytes Function/Label
----- --------------
4 ??DataTable3
4 ??DataTable3_1
4 ??DataTable3_10
4 ??DataTable3_11
4 ??DataTable3_12
4 ??DataTable3_13
4 ??DataTable3_14
4 ??DataTable3_15
4 ??DataTable3_2
4 ??DataTable3_3
4 ??DataTable3_4
4 ??DataTable3_5
4 ??DataTable3_6
4 ??DataTable3_7
4 ??DataTable3_8
4 ??DataTable3_9
4 core_clk_khz
4 core_clk_mhz
22 fb_clk_init
4 periph_clk_khz
246 pll_init
76 set_sys_dividers
72 sysinit
22 trace_clk_init
12 bytes in section .bss
426 bytes in section .text
76 bytes in section .textrw
502 bytes of CODE memory
12 bytes of DATA memory
Errors: none
Warnings: none
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