/* Reallocating the FlexRAM */ __asm (".syntax unified\n" "LDR R0,=0x20001fff\n" //load initial value of stack pointer into R0 "MSR MSP,R0\n"//re-initialize stack pointer by new value "LDR R0, =0x400ac044\n"//Address of register IOMUXC_GPR_GPR17 "LDR R1, =0xaaaaff55\n"//FlexRAM configuration DTC = 265KB, ITC = 128KB, OC = 128KB "STR R1,[R0]\n" "LDR R0,=0x400ac040\n"//Address of register IOMUXC_GPR_GPR16 "LDR R1,[R0]\n" "ORR R1,R1,#4\n"//The 4 corresponds to setting the FLEXRAM_BANK_CFG_SEL bit in register IOMUXC_GPR_GPR16 "STR R1,[R0]\n" #ifdef FLEXRAM_ITCM_ZERO_SIZE "LDR R0,=0x400ac040\n"//Address of register IOMUXC_GPR_GPR16 "LDR R1,[R0]\n" "AND R1,R1,#0xfffffffe\n"//Disabling SRAM_ITC in register IOMUXC_GPR_GPR16 "STR R1,[R0]\n" #endif #ifdef FLEXRAM_DTCM_ZERO_SIZE "LDR R0,=0x400ac040\n"//Address of register IOMUXC_GPR_GPR16 "LDR R1,[R0]\n" "AND R1,R1,#0xfffffffd\n"//Disabling SRAM_DTC in register IOMUXC_GPR_GPR16 "STR R1,[R0]\n" #endif "LDR R0, =0x400ac038\n"//Address of register IOMUXC_GPR_GPR14 "LDR R1, =0x980000\n"//New size configuration for the IOMUXC_GPR_GPR14 register "STR R1,[R0]\n" ".syntax divided\n");