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AN4253 Datasheet(PDF) 35 Page - STMicroelectronics

Part # AN4253
Description  SPC564Lx device startup flow
PDF  44 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN4253 Datasheet(HTML) 35 Page - STMicroelectronics

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DocID024255 Rev 2
35/44
AN4253
asm examples
mtspr 26,r31 // SRR0
mtspr 27,r31 // SRR1
mtspr 58,r31 // CSRR0
mtspr 59,r31 // CSRR1
mtspr 63,r31 // IVPR
mtspr 61,r31 // DEAR
mtspr 62,r31 // ESR
mtspr 570,r31 // MCSRR0
mtspr 571,r31 // MCSRR1
mtspr 340,r31 // TCR
mtspr 512,r31 // SPEFSCR
mtspr 1,r31
// XER
mtspr 256,r31 // USPRG0
mtspr 9,r31
// CTR
mtspr 8,r31
// LR
mtspr 308,r31 // DBCR0
mtspr 309,r31 // DBCR1
mtspr 310,r31 // DBCR2
mtspr 561,r31 // DBCR3
mtspr 563,r31 // DBCR4
mtspr 564,r31
mtspr 603,r31
A.3
MMU entry configuration
// Table 0
e_lis
r0, 0x1000
e_or2i
r0, 0x0000
mtspr
mas0, r0
// fix bits + TLB entry
e_lis
r0, 0xC000
e_or2i
r0, 0x0500
mtspr
mas1, r0
// cfg bits + Page SIZE
e_lis
r0, 0x0000
e_or2i
r0, 0x0028
mtspr
mas2, r0
// EPN + page atrib
e_lis
r0, 0x0000
e_or2i
r0, 0x003F
mtspr
mas3, r0
// RPN + access atrib
tlbwe
A.4
SSCM HW configuration check
// Base address of FLASH module to r7
e_lis
r7, FLASH_BASE@h
e_or2i
r7, FLASH_BASE@l
// Read MCR register
e_lwz
r0, FLASH_REG_MCR (r7) // read FLASH.MCR register
// MCR.EER bit?
e_lis
r1, FLASH_EER_MASK@h
e_or2i
r1, FLASH_EER_MASK@l
se_and
r0, r1
// look for destructive resets
se_cmpi r0,0
// is value '1' ?



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