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working on initfromflash

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This commit is contained in:
Mariano Alvira 2009-04-13 08:09:36 -04:00
parent bc68d77b66
commit 40207dc533
2 changed files with 55 additions and 62 deletions
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49
doc/radioinit
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@ -145,36 +145,29 @@ that u8RamValues isn't important since I just set it's value.
That means I only have InitFromFlash to replace now! That means I only have InitFromFlash to replace now!
Actually, I should test if that is necessary --- I still find it a
little hard to believe that they put essential data on NVM --- except
they could set codeprotect so that clods won't erase it on accident.
/* See PLM/LibInterface/NVM.h for some docs. Looks like they put a
After init from flash and flyback settings standard SST, ST, or Atmel spi flash in there (note the comment about
ram_init_val - 004055d0 continuous read mode).
004055d0
base +0 +4 +8 +c +10 +14 +18 +1c
0000 00000000 00000000 00000000 00000000 00000000 00000000 80009400 00000017
u8RamValues MACPHY.a might use a ROM service for the flash init:
00405424
base +0 +4 +8 +c +10 +14 +18 +1c
0000 0400009b 00000000 00000000 00010000 ff000000 00000000 00000000 00000000
*/
/* 0000f97c g F *ABS* 00000000 InitFromFlash
40308e: f000 f86d bl 40316c <get_ctov> //get_ctov(0,0x9b)
403092: 1929 adds r1, r5, r4 // r4 = 0, r5 is &ram_init_val ac: 4668 mov r0, sp
403094: 7208 strb r0, [r1, #8] ae: f7ff fffe bl 0 <GetInitTranslationTablePtr>
403096: 1c64 adds r4, r4, #1 // r4=1 b2: 4669 mov r1, sp
403098: 0620 lsls r0, r4, #24 b4: 780a ldrb r2, [r1, #0]
40309a: 0e00 lsrs r0, r0, #24 b6: 0001 lsls r1, r0, #0
40309c: 2810 cmp r0, #16 // b8: 20f8 movs r0, #248
40309e: d3f3 bcc.n 403088 <RadioInit+0xcc> // branch if higher ba: 0240 lsls r0, r0, #9
4030a0: b001 add sp, #4 bc: f7ff fffe bl 0 <InitFromFlash>
4030a2: 9804 ldr r0, [sp, #16]
4030a4: bcf0 pop {r4, r5, r6, r7} uint32_t InitFromFlash(uint32_t nvmAddress, uint32_t nLength);
4030a6: b001 add sp, #4
4030a8: 4700 bx r0 Which looks like InitFromFlash(0x1F00,?);
4030aa: 46c0 nop (mov r8, r8)
*/

66
doc/ws.dis
View File

@ -5460,37 +5460,37 @@ Disassembly of section P2:
00403218 <SMAC_InitFromFlash>: 00403218 <SMAC_InitFromFlash>:
403218: b570 push {r4, r5, r6, lr} 403218: b570 push {r4, r5, r6, lr}
40321a: b08a sub sp, #40 40321a: b08a sub sp, #40
40321c: 0006 lsls r6, r0, #0 40321c: 0006 lsls r6, r0, #0 // r0 has 0x1F000 from call in radioinit
40321e: a804 add r0, sp, #16 40321e: a804 add r0, sp, #16
403220: 2102 movs r1, #2 403220: 2102 movs r1, #2
403222: 7001 strb r1, [r0, #0] 403222: 7001 strb r1, [r0, #0] // *0x1F000 = 2;
403224: 2101 movs r1, #1 403224: 2101 movs r1, #1
403226: 7101 strb r1, [r0, #4] 403226: 7101 strb r1, [r0, #4] // *0x1F000 = 1;
403228: f400 fce4 bl 3bf4 <CRM_VRegCntl> 403228: f400 fce4 bl 3bf4 <CRM_VRegCntl> // call to ROM: I assume this turns on the NVM reg
40322c: 482b ldr r0, [pc, #172] (4032dc <SMAC_InitFromFlash+0xc4>) 40322c: 482b ldr r0, [pc, #172] (4032dc <SMAC_InitFromFlash+0xc4>) r0 = &u32SystemClock
40322e: 6800 ldr r0, [r0, #0] 40322e: 6800 ldr r0, [r0, #0] // r0 = u32SystemClock
403230: 2107 movs r1, #7 403230: 2107 movs r1, #7 // r1 = 7
403232: f7fd fb8d bl 400950 <?Veneer (3) for __aeabi_uidivmod> 403232: f7fd fb8d bl 400950 <?Veneer (3) for __aeabi_uidivmod> //divide clock by 7?
403236: 9001 str r0, [sp, #4] 403236: 9001 str r0, [sp, #4]
403238: 9801 ldr r0, [sp, #4] 403238: 9801 ldr r0, [sp, #4] // loop: r0 has result
40323a: 1e41 subs r1, r0, #1 40323a: 1e41 subs r1, r0, #1 // r1 = result - 1
40323c: 9101 str r1, [sp, #4] 40323c: 9101 str r1, [sp, #4] // r1 goes on the stack
40323e: 2800 cmp r0, #0 40323e: 2800 cmp r0, #0 // check if it's 0
403240: d1fa bne.n 403238 <SMAC_InitFromFlash+0x20> 403240: d1fa bne.n 403238 <SMAC_InitFromFlash+0x20> //go to loop if not zero, delay for vreg
403242: 4669 mov r1, sp 403242: 4669 mov r1, sp
403244: f403 fd38 bl 6cb8 <NVM_Detect> 403244: f403 fd38 bl 6cb8 <NVM_Detect> //call to ROM, looks like it returns 0 on fail and a pointer otherwise
403248: 2800 cmp r0, #0 403248: 2800 cmp r0, #0 //0?
40324a: d103 bne.n 403254 <SMAC_InitFromFlash+0x3c> 40324a: d103 bne.n 403254 <SMAC_InitFromFlash+0x3c> // branch to return0:
40324c: 4668 mov r0, sp 40324c: 4668 mov r0, sp
40324e: 7800 ldrb r0, [r0, #0] 40324e: 7800 ldrb r0, [r0, #0] // r0 gets where the return value points
403250: 2800 cmp r0, #0 403250: 2800 cmp r0, #0 // return 0 if 0
403252: d101 bne.n 403258 <SMAC_InitFromFlash+0x40> 403252: d101 bne.n 403258 <SMAC_InitFromFlash+0x40> //otherwise branch to 1:
403254: 2000 movs r0, #0 403254: 2000 movs r0, #0 //return0:
403256: e03e b.n 4032d6 <SMAC_InitFromFlash+0xbe> 403256: e03e b.n 4032d6 <SMAC_InitFromFlash+0xbe> // branch to exit:
403258: 2000 movs r0, #0 403258: 2000 movs r0, #0 //1: r0 = 0
40325a: f403 ff13 bl 7084 <NVM_SetSVar> 40325a: f403 ff13 bl 7084 <NVM_SetSVar> //call to ROM: might need to dump this one...
40325e: 2008 movs r0, #8 40325e: 2008 movs r0, #8 // r0 gets 8;
403260: b501 push {r0, lr} 403260: b501 push {r0, lr} // looks like stack setup for call to NVM_Read
403262: 0033 lsls r3, r6, #0 403262: 0033 lsls r3, r6, #0
403264: aa04 add r2, sp, #16 403264: aa04 add r2, sp, #16
403266: a802 add r0, sp, #8 403266: a802 add r0, sp, #8
@ -5498,19 +5498,19 @@ Disassembly of section P2:
40326a: 2000 movs r0, #0 40326a: 2000 movs r0, #0
40326c: f403 fd7c bl 6d68 <NVM_Read> 40326c: f403 fd7c bl 6d68 <NVM_Read>
403270: b002 add sp, #8 403270: b002 add sp, #8
403272: 2800 cmp r0, #0 403272: 2800 cmp r0, #0 // did it return 0?
403274: d109 bne.n 40328a <SMAC_InitFromFlash+0x72> 403274: d109 bne.n 40328a <SMAC_InitFromFlash+0x72> //if != branch to 2:
403276: 9802 ldr r0, [sp, #8] 403276: 9802 ldr r0, [sp, #8] //r0 gets something on the stack
403278: 4919 ldr r1, [pc, #100] (4032e0 <SMAC_InitFromFlash+0xc8>) 403278: 4919 ldr r1, [pc, #100] (4032e0 <SMAC_InitFromFlash+0xc8>) //r1 = 0x00000abc
40327a: 4288 cmp r0, r1 40327a: 4288 cmp r0, r1
40327c: d105 bne.n 40328a <SMAC_InitFromFlash+0x72> 40327c: d105 bne.n 40328a <SMAC_InitFromFlash+0x72> //branch to 2: if !=
40327e: a802 add r0, sp, #8 40327e: a802 add r0, sp, #8
403280: 88c1 ldrh r1, [r0, #6] 403280: 88c1 ldrh r1, [r0, #6]
403282: 22ff movs r2, #255 403282: 22ff movs r2, #255
403284: 1c92 adds r2, r2, #2 403284: 1c92 adds r2, r2, #2
403286: 4291 cmp r1, r2 403286: 4291 cmp r1, r2
403288: d303 bcc.n 403292 <SMAC_InitFromFlash+0x7a> 403288: d303 bcc.n 403292 <SMAC_InitFromFlash+0x7a>
40328a: 2001 movs r0, #1 40328a: 2001 movs r0, #1 // 2:
40328c: f403 fefa bl 7084 <NVM_SetSVar> 40328c: f403 fefa bl 7084 <NVM_SetSVar>
403290: e7e0 b.n 403254 <SMAC_InitFromFlash+0x3c> 403290: e7e0 b.n 403254 <SMAC_InitFromFlash+0x3c>
403292: 2408 movs r4, #8 403292: 2408 movs r4, #8
@ -5518,7 +5518,7 @@ Disassembly of section P2:
403296: 1f2d subs r5, r5, #4 403296: 1f2d subs r5, r5, #4
403298: e006 b.n 4032a8 <SMAC_InitFromFlash+0x90> 403298: e006 b.n 4032a8 <SMAC_InitFromFlash+0x90>
40329a: a806 add r0, sp, #24 40329a: a806 add r0, sp, #24
40329c: f7ff ff82 bl 4031a4 <SMAC_InitExecuteEntry> 40329c: f7ff ff82 bl 4031a4 <SMAC_InitExecuteEntry> // so it looks like flash has entries it exectues...
4032a0: 2800 cmp r0, #0 4032a0: 2800 cmp r0, #0
4032a2: d00f beq.n 4032c4 <SMAC_InitFromFlash+0xac> 4032a2: d00f beq.n 4032c4 <SMAC_InitFromFlash+0xac>
4032a4: 0080 lsls r0, r0, #2 4032a4: 0080 lsls r0, r0, #2
@ -5543,7 +5543,7 @@ Disassembly of section P2:
4032ce: 2001 movs r0, #1 4032ce: 2001 movs r0, #1
4032d0: f403 fed8 bl 7084 <NVM_SetSVar> 4032d0: f403 fed8 bl 7084 <NVM_SetSVar>
4032d4: 1d20 adds r0, r4, #4 4032d4: 1d20 adds r0, r4, #4
4032d6: b00a add sp, #40 4032d6: b00a add sp, #40 //exit:
4032d8: e01c b.n 403314 <SMAC_InitFromMemory+0x30> 4032d8: e01c b.n 403314 <SMAC_InitFromMemory+0x30>
4032da: 46c0 nop (mov r8, r8) 4032da: 46c0 nop (mov r8, r8)
4032dc: 00405448 .word 0x00405448 4032dc: 00405448 .word 0x00405448