void MMU_CreateTranslationTable(void)
{
mmu_region_attributes_Type region;
#if defined ( __ICCARM__ )
#pragma section=".intvec"
#pragma section=".rodata"
#pragma section=".rwdata"
#pragma section=".bss"
Image$$VECTORS$$Base = (uint32_t) __section_begin(".intvec");
Image$$VECTORS$$Limit= ((uint32_t)__section_begin(".intvec")+(uint32_t)__section_size(".intvec"));
Image$$RO_DATA$$Base = (uint32_t) __section_begin(".rodata");
Image$$RO_DATA$$Limit= ((uint32_t)__section_begin(".rodata")+(uint32_t)__section_size(".rodata"));
Image$$RW_DATA$$Base = (uint32_t) __section_begin(".rwdata");
Image$$RW_DATA$$Limit= ((uint32_t)__section_begin(".rwdata")+(uint32_t)__section_size(".rwdata"));
Image$$RW_IRAM1$$Base = (uint32_t) __section_begin(".bss");
Image$$RW_IRAM1$$Limit= ((uint32_t)__section_begin(".bss")+(uint32_t)__section_size(".bss"));
#endif
/*
* Generate descriptors. Refer to core_ca.h to get information about attributes
*
*/
//Create descriptors for Vectors, RO, RW, ZI sections
section_normal(Sect_Normal, region);
section_normal_cod(Sect_Normal_Cod, region);
section_normal_ro(Sect_Normal_RO, region);
section_normal_rw(Sect_Normal_RW, region);
//Create descriptors for peripherals
section_device_ro(Sect_Device_RO, region);
section_device_rw(Sect_Device_RW, region);
section_normal_nc(Sect_Normal_NC, region);
//Create descriptors for 64k pages
page64k_device_rw(Page_L1_64k, Page_64k_Device_RW, region);
//Create descriptors for 4k pages
page4k_device_rw(Page_L1_4k, Page_4k_Device_RW, region);
/*
* Define MMU flat-map regions and attributes
*
*/
//Create 4GB of faulting entries
MMU_TTSection (&Image$$TTB$$ZI$$Base, 0, 4096, DESCRIPTOR_FAULT);
// R7S72100 memory map.
MMU_TTSection (&Image$$TTB$$ZI$$Base, RZ_A1_NORFLASH_BASE0 , 64, Sect_Normal_RO);
MMU_TTSection (&Image$$TTB$$ZI$$Base, RZ_A1_NORFLASH_BASE1 , 64, Sect_Normal_RO);
MMU_TTSection (&Image$$TTB$$ZI$$Base, RZ_A1_SDRAM_BASE0 , 64, Sect_Normal_RW);
MMU_TTSection (&Image$$TTB$$ZI$$Base, RZ_A1_SDRAM_BASE1 , 64, Sect_Normal_RW);
MMU_TTSection (&Image$$TTB$$ZI$$Base, RZ_A1_USER_AREA0 , 64, Sect_Normal_RW);
MMU_TTSection (&Image$$TTB$$ZI$$Base, RZ_A1_USER_AREA1 , 64, Sect_Normal_RW);
MMU_TTSection (&Image$$TTB$$ZI$$Base, RZ_A1_SPI_IO0 , 64, Sect_Normal_RO);
MMU_TTSection (&Image$$TTB$$ZI$$Base, RZ_A1_SPI_IO1 , 64, Sect_Normal_RO);
MMU_TTSection (&Image$$TTB$$ZI$$Base, RZ_A1_ONCHIP_SRAM_BASE , 10, Sect_Normal_RW);
MMU_TTSection (&Image$$TTB$$ZI$$Base, RZ_A1_SPI_MIO_BASE , 1, Sect_Device_RW);
MMU_TTSection (&Image$$TTB$$ZI$$Base, RZ_A1_BSC_BASE , 1, Sect_Device_RW);
MMU_TTSection (&Image$$TTB$$ZI$$Base, RZ_A1_PERIPH_BASE0 , 3, Sect_Device_RW);
MMU_TTSection (&Image$$TTB$$ZI$$Base, RZ_A1_PERIPH_BASE1 , 49, Sect_Device_RW);
#if defined( __ICCARM__ )
//Define Image
MMU_TTSection (&Image$$TTB$$ZI$$Base, (uint32_t)Image$$RO_DATA$$Base , RO_DATA_SIZE , Sect_Normal_Cod);
MMU_TTSection (&Image$$TTB$$ZI$$Base, (uint32_t)Image$$VECTORS$$Base , VECTORS_SIZE , Sect_Normal_Cod);
MMU_TTSection (&Image$$TTB$$ZI$$Base, (uint32_t)Image$$RW_DATA$$Base , RW_DATA_SIZE , Sect_Normal_RW);
MMU_TTSection (&Image$$TTB$$ZI$$Base, (uint32_t)Image$$RW_IRAM1$$Base, RW_IRAM1_SIZE, Sect_Normal_RW);
#else
//Define Image
MMU_TTSection (&Image$$TTB$$ZI$$Base, (uint32_t)&Image$$RO_DATA$$Base , RO_DATA_SIZE , Sect_Normal_Cod);
MMU_TTSection (&Image$$TTB$$ZI$$Base, (uint32_t)&Image$$VECTORS$$Base , VECTORS_SIZE , Sect_Normal_Cod);
MMU_TTSection (&Image$$TTB$$ZI$$Base, (uint32_t)&Image$$RW_DATA$$Base , RW_DATA_SIZE , Sect_Normal_RW);
MMU_TTSection (&Image$$TTB$$ZI$$Base, (uint32_t)&Image$$RW_IRAM1$$Base, RW_IRAM1_SIZE, Sect_Normal_RW);
#endif
#if defined( __CC_ARM )
MMU_TTSection (&Image$$TTB$$ZI$$Base, RZ_A1_ONCHIP_SRAM_NC_BASE , 10, Sect_Normal_NC);
#elif defined ( __ICCARM__ )
MMU_TTSection (&Image$$TTB$$ZI$$Base, RZ_A1_ONCHIP_SRAM_NC_BASE , 10, Sect_Normal_NC);
#else
MMU_TTSection (&Image$$TTB$$ZI$$Base, (uint32_t)&Image$$RW_DATA_NC$$Base, RW_DATA_NC_SIZE, Sect_Normal_NC);
MMU_TTSection (&Image$$TTB$$ZI$$Base, (uint32_t)&Image$$ZI_DATA_NC$$Base, ZI_DATA_NC_SIZE, Sect_Normal_NC);
#endif
/* Set location of level 1 page table
; 31:14 - Translation table base addr (31:14-TTBCR.N, TTBCR.N is 0 out of reset)
; 13:7 - 0x0
; 6 - IRGN[0] 0x0 (Inner WB WA)
; 5 - NOS 0x0 (Non-shared)
; 4:3 - RGN 0x1 (Outer WB WA)
; 2 - IMP 0x0 (Implementation Defined)
; 1 - S 0x0 (Non-shared)
; 0 - IRGN[1] 0x1 (Inner WB WA) */
__set_TTBR0(((uint32_t)&Image$$TTB$$ZI$$Base) | 9);
__ISB();
/* Set up domain access control register
; We set domain 0 to Client and all other domains to No Access.
; All translation table entries specify domain 0 */
__set_DACR(1);
__ISB();
}
void MMU_CreateTranslationTable(void)
{
mmu_region_attributes_Type region;
//Create 4GB of faulting entries
MMU_TTSection (&Image$$TTB$$ZI$$Base, 0, 4096, DESCRIPTOR_FAULT);
/*
* Generate descriptors. Refer to core_ca.h to get information about attributes
*
*/
//Create descriptors for Vectors, RO, RW, ZI sections
section_normal(Sect_Normal, region);
section_normal_cod(Sect_Normal_Cod, region);
section_normal_ro(Sect_Normal_RO, region);
section_normal_rw(Sect_Normal_RW, region);
//Create descriptors for peripherals
section_device_ro(Sect_Device_RO, region);
section_device_rw(Sect_Device_RW, region);
//Create descriptors for 64k pages
page64k_device_rw(Page_L1_64k, Page_64k_Device_RW, region);
//Create descriptors for 4k pages
page4k_device_rw(Page_L1_4k, Page_4k_Device_RW, region);
/*
* Define MMU flat-map regions and attributes
*
*/
//Define Image
MMU_TTSection (&Image$$TTB$$ZI$$Base, (uint32_t)&Image$$VECTORS$$Base, 1, Sect_Normal_Cod);
MMU_TTSection (&Image$$TTB$$ZI$$Base, (uint32_t)&Image$$RW_DATA$$Base, 1, Sect_Normal_RW);
MMU_TTSection (&Image$$TTB$$ZI$$Base, (uint32_t)&Image$$ZI_DATA$$Base, 1, Sect_Normal_RW);
//all DRAM executable, rw, cacheable - applications may choose to divide memory into ro executable
MMU_TTSection (&Image$$TTB$$ZI$$Base, (uint32_t)&Image$$TTB$$ZI$$Base, 2043, Sect_Normal);
//--------------------- PERIPHERALS -------------------
MMU_TTSection (&Image$$TTB$$ZI$$Base, VE_A9_MP_FLASH_BASE0 , 64, Sect_Device_RO);
MMU_TTSection (&Image$$TTB$$ZI$$Base, VE_A9_MP_FLASH_BASE1 , 64, Sect_Device_RO);
MMU_TTSection (&Image$$TTB$$ZI$$Base, VE_A9_MP_SRAM_BASE , 64, Sect_Device_RW);
MMU_TTSection (&Image$$TTB$$ZI$$Base, VE_A9_MP_VRAM_BASE , 32, Sect_Device_RW);
MMU_TTSection (&Image$$TTB$$ZI$$Base, VE_A9_MP_ETHERNET_BASE , 16, Sect_Device_RW);
MMU_TTSection (&Image$$TTB$$ZI$$Base, VE_A9_MP_USB_BASE , 16, Sect_Device_RW);
// Create (16 * 64k)=1MB faulting entries to cover peripheral range 0x1C000000-0x1C00FFFF
MMU_TTPage64k(&Image$$TTB$$ZI$$Base, PERIPHERAL_A_FAULT , 16, Page_L1_64k, (uint32_t *)PERIPHERAL_A_TABLE_L2_BASE_64k, DESCRIPTOR_FAULT);
// Define peripheral range 0x1C000000-0x1C00FFFF
MMU_TTPage64k(&Image$$TTB$$ZI$$Base, VE_A9_MP_DAP_BASE , 1, Page_L1_64k, (uint32_t *)PERIPHERAL_A_TABLE_L2_BASE_64k, Page_64k_Device_RW);
MMU_TTPage64k(&Image$$TTB$$ZI$$Base, VE_A9_MP_SYSTEM_REG_BASE, 1, Page_L1_64k, (uint32_t *)PERIPHERAL_A_TABLE_L2_BASE_64k, Page_64k_Device_RW);
MMU_TTPage64k(&Image$$TTB$$ZI$$Base, VE_A9_MP_SERIAL_BASE , 1, Page_L1_64k, (uint32_t *)PERIPHERAL_A_TABLE_L2_BASE_64k, Page_64k_Device_RW);
MMU_TTPage64k(&Image$$TTB$$ZI$$Base, VE_A9_MP_AACI_BASE , 1, Page_L1_64k, (uint32_t *)PERIPHERAL_A_TABLE_L2_BASE_64k, Page_64k_Device_RW);
MMU_TTPage64k(&Image$$TTB$$ZI$$Base, VE_A9_MP_MMCI_BASE , 1, Page_L1_64k, (uint32_t *)PERIPHERAL_A_TABLE_L2_BASE_64k, Page_64k_Device_RW);
MMU_TTPage64k(&Image$$TTB$$ZI$$Base, VE_A9_MP_KMI0_BASE , 2, Page_L1_64k, (uint32_t *)PERIPHERAL_A_TABLE_L2_BASE_64k, Page_64k_Device_RW);
MMU_TTPage64k(&Image$$TTB$$ZI$$Base, VE_A9_MP_UART_BASE , 4, Page_L1_64k, (uint32_t *)PERIPHERAL_A_TABLE_L2_BASE_64k, Page_64k_Device_RW);
MMU_TTPage64k(&Image$$TTB$$ZI$$Base, VE_A9_MP_WDT_BASE , 1, Page_L1_64k, (uint32_t *)PERIPHERAL_A_TABLE_L2_BASE_64k, Page_64k_Device_RW);
// Create (16 * 64k)=1MB faulting entries to cover peripheral range 0x1C100000-0x1C10FFFF
MMU_TTPage64k(&Image$$TTB$$ZI$$Base, PERIPHERAL_B_FAULT , 16, Page_L1_64k, (uint32_t *)PERIPHERAL_B_TABLE_L2_BASE_64k, DESCRIPTOR_FAULT);
// Define peripheral range 0x1C100000-0x1C10FFFF
MMU_TTPage64k(&Image$$TTB$$ZI$$Base, VE_A9_MP_TIMER_BASE , 2, Page_L1_64k, (uint32_t *)PERIPHERAL_B_TABLE_L2_BASE_64k, Page_64k_Device_RW);
MMU_TTPage64k(&Image$$TTB$$ZI$$Base, VE_A9_MP_DVI_BASE , 1, Page_L1_64k, (uint32_t *)PERIPHERAL_B_TABLE_L2_BASE_64k, Page_64k_Device_RW);
MMU_TTPage64k(&Image$$TTB$$ZI$$Base, VE_A9_MP_RTC_BASE , 1, Page_L1_64k, (uint32_t *)PERIPHERAL_B_TABLE_L2_BASE_64k, Page_64k_Device_RW);
MMU_TTPage64k(&Image$$TTB$$ZI$$Base, VE_A9_MP_UART4_BASE , 1, Page_L1_64k, (uint32_t *)PERIPHERAL_B_TABLE_L2_BASE_64k, Page_64k_Device_RW);
MMU_TTPage64k(&Image$$TTB$$ZI$$Base, VE_A9_MP_CLCD_BASE , 1, Page_L1_64k, (uint32_t *)PERIPHERAL_B_TABLE_L2_BASE_64k, Page_64k_Device_RW);
// Create (256 * 4k)=1MB faulting entries to cover private address space. Needs to be marked as Device memory
MMU_TTPage4k (&Image$$TTB$$ZI$$Base, __get_CBAR() ,256, Page_L1_4k, (uint32_t *)PRIVATE_TABLE_L2_BASE_4k, DESCRIPTOR_FAULT);
// Define private address space entry.
MMU_TTPage4k (&Image$$TTB$$ZI$$Base, __get_CBAR() , 2, Page_L1_4k, (uint32_t *)PRIVATE_TABLE_L2_BASE_4k, Page_4k_Device_RW);
// Define L2CC entry. Uncomment if PL310 is present
// MMU_TTPage4k (&Image$$TTB$$ZI$$Base, VE_A9_MP_PL310_BASE , 1, Page_L1_4k, (uint32_t *)PRIVATE_TABLE_L2_BASE_4k, Page_4k_Device_RW);
// Create (256 * 4k)=1MB faulting entries to synchronization space (Useful if some non-cacheable DMA agent is present in the SoC)
MMU_TTPage4k (&Image$$TTB$$ZI$$Base, F_SYNC_BASE , 256, Page_L1_4k, (uint32_t *)SYNC_FLAGS_TABLE_L2_BASE_4k, DESCRIPTOR_FAULT);
// Define synchronization space entry.
MMU_TTPage4k (&Image$$TTB$$ZI$$Base, FLAG_SYNC , 1, Page_L1_4k, (uint32_t *)SYNC_FLAGS_TABLE_L2_BASE_4k, Page_4k_Device_RW);
/* Set location of level 1 page table
; 31:14 - Translation table base addr (31:14-TTBCR.N, TTBCR.N is 0 out of reset)
; 13:7 - 0x0
; 6 - IRGN[0] 0x0 (Inner WB WA)
; 5 - NOS 0x0 (Non-shared)
; 4:3 - RGN 0x1 (Outer WB WA)
; 2 - IMP 0x0 (Implementation Defined)
; 1 - S 0x0 (Non-shared)
; 0 - IRGN[1] 0x1 (Inner WB WA) */
__set_TTBR0(((uint32_t)&Image$$TTB$$ZI$$Base) | 9);
__ISB();
/* Set up domain access control register
; We set domain 0 to Client and all other domains to No Access.
; All translation table entries specify domain 0 */
__set_DACR(1);
__ISB();
}
