Mercurial > ecos
view packages/hal/arm/edb7xxx/current/include/hal_platform_setup.h @ 66:bf00f99aec69 ecos-sw-2000-02-02
Merge from eCos master repository on 2000-02-02-19:16:44-GMT
| author | jlarmour |
|---|---|
| date | Wed, 02 Feb 2000 19:57:02 +0000 |
| parents | c38311975d4f |
| children | da3908c9cd10 |
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#ifndef CYGONCE_HAL_PLATFORM_SETUP_H #define CYGONCE_HAL_PLATFORM_SETUP_H /*============================================================================= // // hal_platform_setup.h // // Platform specific support for HAL (assembly code) // //============================================================================= //####COPYRIGHTBEGIN#### // // ------------------------------------------- // The contents of this file are subject to the Red Hat eCos Public License // Version 1.1 (the "License"); you may not use this file except in // compliance with the License. You may obtain a copy of the License at // http://www.redhat.com/ // // Software distributed under the License is distributed on an "AS IS" // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the // License for the specific language governing rights and limitations under // the License. // // The Original Code is eCos - Embedded Configurable Operating System, // released September 30, 1998. // // The Initial Developer of the Original Code is Red Hat. // Portions created by Red Hat are // Copyright (C) 1998, 1999, 2000 Red Hat, Inc. // All Rights Reserved. // ------------------------------------------- // //####COPYRIGHTEND#### //============================================================================= //#####DESCRIPTIONBEGIN#### // // Author(s): gthomas // Contributors: gthomas // Date: 1999-04-21 // Purpose: Cirrus EDB7XXX platform specific support routines // Description: // Usage: #include <cyg/hal/hal_platform_setup.h> // //####DESCRIPTIONEND#### // //===========================================================================*/ #include <pkgconf/system.h> // System-wide configuration info #include <pkgconf/hal.h> // Architecture independent configuration #include CYGBLD_HAL_PLATFORM_H // Platform specific configuration #include <cyg/hal/hal_edb7xxx.h> // Platform specific hardware definitions #include <cyg/hal/hal_mmu.h> // MMU definitions #define CYGHWR_HAL_ARM_HAS_MMU // This processor has an MMU // // Memory map - set up by ROM (GDB stubs) // // Region Logical Address Physical Address // DRAM 0x00000000..0x00xFFFFF 0xC00x0000 (see below) // Expansion 2 0x20000000 0x20000000 // Expansion 3 0x30000000 0x30000000 // PCMCIA 0 0x40000000 0x40000000 // PCMCIA 1 0x50000000 0x50000000 // SRAM 0x60000000..0x600007FF 0x60000000 // I/O 0x80000000 0x80000000 // MMU Tables 0xC00y0000 // LCD buffer 0xC0000000..0xC001FFFF 0xC0000000 // ROM 0xE0000000..0xEFFFFFFF 0x00000000 // ROM 0xF0000000..0xFFFFFFFF 0x10000000 #ifdef CYGHWR_HAL_ARM_EDB7XXX_LCD_INSTALLED #define LCD_BUFFER_SIZE 0x00020000 #else #define LCD_BUFFER_SIZE 0x00000000 #endif #define DRAM_PA_START 0xC0000000 #define MMU_BASE DRAM_PA_START+LCD_BUFFER_SIZE #define PTE_BASE MMU_BASE+0x4000 #if (CYGHWR_HAL_ARM_EDB7XXX_DRAM_SIZE == 2) #define MMU_TABLES_SIZE (0x4000+0x1000+0x1000) // RAM used for PTE entries #define DRAM_LA_END (0x00200000-MMU_TABLES_SIZE-LCD_BUFFER_SIZE) #elif (CYGHWR_HAL_ARM_EDB7XXX_DRAM_SIZE == 16) #define MMU_TABLES_SIZE (0x4000+0x4000+0x1000) // RAM used for PTE entries #define DRAM_LA_END (0x01000000-MMU_TABLES_SIZE-LCD_BUFFER_SIZE) #endif #define DRAM_LA_START 0x00000000 #define DRAM_PA MMU_BASE+MMU_TABLES_SIZE #define LCD_LA_START 0xC0000000 #define LCD_LA_END 0xC0020000 #define LCD_PA 0xC0000000 #define ROM0_LA_START 0xE0000000 #define ROM0_PA 0x00000000 #define ROM0_LA_END 0xF0000000 #define ROM1_LA_START 0xF0000000 #define ROM1_LA_END 0x00000000 #define ROM1_PA 0x10000000 #define EXPANSION2_LA_START 0x20000000 #define EXPANSION2_PA 0x20000000 #define EXPANSION3_LA_START 0x30000000 #define EXPANSION3_PA 0x30000000 #define PCMCIA0_LA_START 0x40000000 #define PCMCIA0_PA 0x40000000 #define PCMCIA1_LA_START 0x50000000 #define PCMCIA1_PA 0x50000000 #define SRAM_LA_START 0x60000000 #define SRAM_LA_END 0x60001000 #define SRAM_PA 0x60000000 #define IO_LA_START 0x80000000 #define IO_LA_END 0x80003000 #define IO_PA 0x80000000 // Define startup code [macros] #if defined(CYGSEM_HAL_INSTALL_MMU_TABLES) && !defined(CYG_HAL_STARTUP_RAM) #ifdef CYG_HAL_ARM_CL7111 // CL7111, 710 processor #define MMU_INITIALIZE \ ldr r2,=MMU_Control_Init ;\ mcr MMU_CP,0,r2,MMU_Control,c0 /* MMU off */ ;\ mcr MMU_CP,0,r1,MMU_Base,c0 ;\ mcr MMU_CP,0,r1,MMU_FlushTLB,c0,0 /* Invalidate TLB */ ;\ mcr MMU_CP,0,r1,MMU_FlushIDC,c0,0 /* Invalidate Caches */ ;\ ldr r1,=0xFFFFFFFF ;\ mcr MMU_CP,0,r1,MMU_DomainAccess,c0 ;\ ldr r2,=10f ;\ ldr r1,=MMU_Control_Init|MMU_Control_M ;\ mcr MMU_CP,0,r1,MMU_Control,c0 ;\ mov pc,r2 /* Change address spaces */ ;\ nop ;\ nop ;\ nop ;\ 10: #else // EP7211, 720T processor #define MMU_INITIALIZE \ ldr r2,=MMU_Control_Init ;\ mcr MMU_CP,0,r2,MMU_Control,c0 /* MMU off */ ;\ mcr MMU_CP,0,r1,MMU_Base,c0 ;\ mcr MMU_CP,0,r1,MMU_TLB,c7,0 /* Invalidate TLB */ ;\ mcr MMU_CP,0,r1,MMU_FlushIDC,c0,0 /* Invalidate Caches */ ;\ ldr r1,=0xFFFFFFFF ;\ mcr MMU_CP,0,r1,MMU_DomainAccess,c0 ;\ ldr r2,=10f ;\ ldr r3,=__exception_handlers ;\ sub r2,r2,r3 ;\ ldr r3,=ROM0_LA_START ;\ add r2,r2,r3 ;\ ldr r1,=MMU_Control_Init|MMU_Control_M ;\ mcr MMU_CP,0,r1,MMU_Control,c0 ;\ mov pc,r2 /* Change address spaces */ ;\ nop ;\ nop ;\ nop ;\ 10: #endif #define RELOCATE_TEXT_SEGMENT \ ldr r2,=__exception_handlers ;\ ldr r3,=ROM0_LA_START ;\ cmp r2,r3 ;\ beq 20f ;\ ldr r4,=__rom_data_end ;\ 15: ;\ ldr r0,[r3],#4 ;\ str r0,[r2],#4 ;\ cmp r2,r4 ;\ bne 15b ;\ 20: #define INIT_MEMORY_CONFIG \ /* Initialize memory configuration */ ;\ ldr r1,=MEMCFG1 ;\ ldr r2,=0x8200A080 ;\ str r2,[r1] ;\ ldr r1,=MEMCFG2 ;\ ldr r2,=0xFEFC0000 ;\ str r2,[r1] ;\ ldr r1,=DRFPR ;\ ldr r2,=0x81 /* DRAM refresh = 64KHz */ ;\ strb r2,[r1] #if defined(CYGSEM_HAL_STATIC_MMU_TABLES) #define PLATFORM_SETUP1 \ INIT_MEMORY_CONFIG ;\ ldr r1,=_MMU_table-0xE0000000 ;\ MMU_INITIALIZE ;\ RELOCATE_TEXT_SEGMENT #define PLATFORM_EXTRAS <cyg/hal/hal_platform_extras.h> #else // MMU tables placed in DRAM #if (CYGHWR_HAL_ARM_EDB7XXX_DRAM_SIZE == 2) // Note: The DRAM on this board is very irregular in that every // other 256K piece is missing. E.g. only these [physical] // addresses are valid: // 0xC0000000..0xC003FFFF // 0xC0080000..0xC00BFFFF // 0xC0200000..0xC023FFFF Note the additional GAP! // etc. // 0xC0800000..0xC083FFFF Note the additional GAP! // 0xC0880000..0xC08CFFFF // 0xC0A00000..0xC0A3FFFF // etc. // The MMU mapping code takes this into consideration and creates // a continuous logical map for the DRAM. #define MAP_DRAM \ /* Map DRAM */ ;\ ldr r3,=DRAM_LA_START ;\ ldr r4,=DRAM_LA_END ;\ ldr r5,=DRAM_PA ;\ /* 0x00000000..0x000FFFFF */ ;\ mov r6,r2 /* Set up page table descriptor */ ;\ ldr r7,=MMU_L1_TYPE_Page ;\ orr r6,r6,r7 ;\ str r6,[r1],#4 /* Store PTE, update pointer */ ;\ 10: mov r6,r5 /* Build page table entry */ ;\ ldr r7,=MMU_L2_TYPE_Small|MMU_AP_Any|MMU_Bufferable|MMU_Cacheable;\ orr r6,r6,r7 ;\ ldr r7,=MMU_PAGE_SIZE ;\ str r6,[r2],#4 /* Next page */ ;\ add r3,r3,r7 ;\ add r5,r5,r7 ;\ ldr r8,=DRAM_LA_START+MMU_SECTION_SIZE ;\ cmp r3,r8 /* Done with first 1M? */ ;\ beq 20f ;\ ldr r7,=0x40000 /* Special check for 256K boundary */ ;\ and r7,r7,r5 ;\ cmp r7,#0 ;\ beq 10b ;\ add r5,r5,r7 /* Skip 256K hole */ ;\ ldr r7,=0x100000 ;\ and r7,r5,r7 ;\ beq 10b ;\ add r5,r5,r7 /* Nothing at 0xC0100000 */ ;\ ldr r7,=0x400000 /* Also nothing at 0xC0400000 */ ;\ and r7,r5,r7 ;\ beq 10b ;\ add r5,r5,r7 ;\ b 10b ;\ 20: ;\ /* 0x00100000..0x001FFFFF */ ;\ mov r6,r2 /* Set up page table descriptor */ ;\ ldr r7,=MMU_L1_TYPE_Page ;\ orr r6,r6,r7 ;\ str r6,[r1],#4 /* Store PTE, update pointer */ ;\ 10: mov r6,r5 /* Build page table entry */ ;\ ldr r7,=MMU_L2_TYPE_Small|MMU_AP_Any|MMU_Bufferable|MMU_Cacheable;\ orr r6,r6,r7 ;\ ldr r7,=MMU_PAGE_SIZE ;\ str r6,[r2],#4 /* Next page */ ;\ add r3,r3,r7 ;\ cmp r3,r4 /* Done with first DRAM? */ ;\ beq 20f ;\ add r5,r5,r7 ;\ ldr r7,=0x40000 /* Special check for 256K boundary */ ;\ and r7,r7,r5 ;\ cmp r7,#0 ;\ beq 10b ;\ add r5,r5,r7 /* Skip 256K hole */ ;\ ldr r7,=0x100000 ;\ and r7,r5,r7 ;\ beq 10b ;\ add r5,r5,r7 /* Nothing at 0xC0300000 */ ;\ ldr r7,=0x400000 /* Also nothing at 0xC0400000 */ ;\ and r7,r5,r7 ;\ beq 10b ;\ add r5,r5,r7 ;\ b 10b ;\ 20: #elif (CYGHWR_HAL_ARM_EDB7XXX_DRAM_SIZE == 16) // The 16M board is arranged as: // 0xC0000000..0xC07FFFFF // 0xC1000000..0xC17FFFFF #define MAP_DRAM \ /* Map DRAM */ ;\ ldr r3,=DRAM_LA_START ;\ ldr r4,=DRAM_LA_END ;\ ldr r5,=DRAM_PA ;\ /* 0xXXX00000..0xXXXFFFFF */ ;\ 10: mov r6,r2 /* Set up page table descriptor */ ;\ ldr r7,=MMU_L1_TYPE_Page ;\ orr r6,r6,r7 ;\ str r6,[r1],#4 /* Store PTE, update pointer */ ;\ ldr r8,=MMU_SECTION_SIZE/MMU_PAGE_SIZE ;\ ldr r9,=DRAM_PA_START+0x00800000 /* Skip at 8M boundary */ ;\ 12: cmp r5,r9 ;\ bne 15f ;\ ldr r5,=DRAM_PA_START+0x01000000 /* Next chunk of DRAM */ ;\ 15: mov r6,r5 /* Build page table entry */ ;\ ldr r7,=MMU_L2_TYPE_Small|MMU_AP_Any|MMU_Bufferable|MMU_Cacheable;\ orr r6,r6,r7 ;\ ldr r7,=MMU_PAGE_SIZE ;\ str r6,[r2],#4 /* Next page */ ;\ add r3,r3,r7 ;\ add r5,r5,r7 ;\ cmp r3,r4 /* End of DRAM? */ ;\ beq 20f ;\ sub r8,r8,#1 /* End of 1M section? */ ;\ cmp r8,#0 ;\ bne 12b /* Next page */ ;\ b 10b /* Next section */ ;\ 20: #else #err Invalid DRAM size select #endif #define PLATFORM_SETUP1 \ INIT_MEMORY_CONFIG ;\ /* Initialize MMU to create new memory map */ ;\ ldr r1,=MMU_BASE ;\ ldr r2,=PTE_BASE ;\ MAP_DRAM ;\ /* Nothing until PCMCIA0 */ ;\ ldr r3,=0x3FF /* Page tables need 2K boundary */ ;\ add r2,r2,r3 ;\ ldr r3,=~0x3FF ;\ and r2,r2,r3 ;\ ldr r3,=(DRAM_LA_END+0x000FFFFF)&0xFFF00000 ;\ ldr r4,=EXPANSION2_LA_START ;\ ldr r5,=MMU_L1_TYPE_Fault ;\ ldr r7,=MMU_SECTION_SIZE ;\ 10: str r5,[r1],#4 ;\ add r3,r3,r7 ;\ cmp r3,r4 ;\ bne 10b ;\ /* EXPANSION2, EXPANSION3, PCMCIA0, PCMCIA1 */ ;\ ldr r3,=EXPANSION2_LA_START ;\ ldr r4,=SRAM_LA_START ;\ ldr r5,=EXPANSION2_PA ;\ ldr r6,=MMU_L1_TYPE_Section|MMU_AP_Any ;\ ldr r7,=MMU_SECTION_SIZE ;\ 10: orr r0,r5,r6 ;\ str r0,[r1],#4 ;\ add r5,r5,r7 ;\ add r3,r3,r7 ;\ cmp r3,r4 ;\ bne 10b ;\ /* SRAM */ ;\ ldr r3,=SRAM_LA_START ;\ ldr r4,=MMU_L1_TYPE_Page|MMU_DOMAIN(0) ;\ orr r4,r4,r2 ;\ str r4,[r1],#4 ;\ ldr r4,=MMU_L2_TYPE_Small|MMU_AP_Any|MMU_Bufferable|MMU_Cacheable;\ orr r4,r3,r4 ;\ str r4,[r2],#4 ;\ ldr r3,=SRAM_LA_START+MMU_PAGE_SIZE ;\ ldr r4,=SRAM_LA_START+MMU_SECTION_SIZE ;\ ldr r5,=MMU_L2_TYPE_Fault ;\ ldr r7,=MMU_PAGE_SIZE ;\ 10: str r5,[r2],#4 ;\ add r3,r3,r7 ;\ cmp r3,r4 ;\ bne 10b ;\ ldr r4,=IO_LA_START ;\ ldr r5,=MMU_L1_TYPE_Fault ;\ ldr r7,=MMU_SECTION_SIZE ;\ 20: str r5,[r1],#4 ;\ add r3,r3,r7 ;\ cmp r3,r4 ;\ bne 20b ;\ /* I/O */ ;\ ldr r3,=0x3FF /* Page tables need 2K boundary */ ;\ add r2,r2,r3 ;\ ldr r3,=~0x3FF ;\ and r2,r2,r3 ;\ ldr r4,=MMU_L1_TYPE_Page|MMU_DOMAIN(0) ;\ orr r4,r4,r2 ;\ str r4,[r1],#4 ;\ ldr r3,=IO_LA_START ;\ ldr r4,=IO_LA_END ;\ ldr r7,=MMU_PAGE_SIZE ;\ ldr r5,=IO_PA|MMU_L2_TYPE_Small|MMU_AP_All ;\ 10: str r5,[r2],#4 ;\ add r5,r5,r7 ;\ add r3,r3,r7 ;\ cmp r3,r4 ;\ bne 10b ;\ ldr r4,=IO_LA_START+MMU_SECTION_SIZE ;\ ldr r5,=MMU_L2_TYPE_Fault ;\ ldr r7,=MMU_PAGE_SIZE ;\ 10: str r5,[r2],#4 ;\ add r3,r3,r7 ;\ cmp r3,r4 ;\ bne 10b ;\ ldr r4,=LCD_LA_START ;\ ldr r5,=MMU_L1_TYPE_Fault ;\ ldr r7,=MMU_SECTION_SIZE ;\ 20: str r5,[r1],#4 ;\ add r3,r3,r7 ;\ cmp r3,r4 ;\ bne 20b ;\ /* LCD Buffer & Unmapped DRAM (holes and all) */ ;\ ldr r3,=LCD_LA_START ;\ ldr r4,=ROM0_LA_START ;\ ldr r5,=LCD_PA ;\ ldr r6,=MMU_L1_TYPE_Section|MMU_AP_Any \ |MMU_Bufferable|MMU_Cacheable ;\ ldr r7,=MMU_SECTION_SIZE ;\ 10: orr r0,r5,r6 ;\ str r0,[r1],#4 ;\ add r5,r5,r7 ;\ add r3,r3,r7 ;\ cmp r3,r4 ;\ bne 10b ;\ /* ROM0 */ ;\ ldr r3,=ROM0_LA_START ;\ ldr r4,=ROM0_LA_END ;\ ldr r5,=ROM0_PA ;\ ldr r6,=MMU_L1_TYPE_Section|MMU_AP_Any|MMU_Cacheable ;\ ldr r7,=MMU_SECTION_SIZE ;\ 10: orr r0,r5,r6 ;\ str r0,[r1],#4 ;\ add r5,r5,r7 ;\ add r3,r3,r7 ;\ cmp r3,r4 ;\ bne 10b ;\ /* ROM1 */ ;\ ldr r3,=ROM1_LA_START ;\ ldr r4,=ROM1_LA_END ;\ ldr r5,=ROM1_PA ;\ ldr r6,=MMU_L1_TYPE_Section|MMU_AP_Any ;\ ldr r7,=MMU_SECTION_SIZE ;\ 10: orr r0,r5,r6 ;\ str r0,[r1],#4 ;\ add r5,r5,r7 ;\ add r3,r3,r7 ;\ cmp r3,r4 ;\ bne 10b ;\ /* Now initialize the MMU to use this new page table */ ;\ ldr r1,=MMU_BASE ;\ MMU_INITIALIZE ;\ RELOCATE_TEXT_SEGMENT #endif // CYGSEM_HAL_STATIC_MMU_TABLES #else // CYGSEM_HAL_INSTALL_MMU_TABLES #define PLATFORM_SETUP1 #endif /*---------------------------------------------------------------------------*/ /* end of hal_platform_setup.h */ #endif /* CYGONCE_HAL_PLATFORM_SETUP_H */