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Code Issues Releases Activity

added memory mapped region for system mem - sdk demos load a segment here on ELF load

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This commit is contained in:
bunnei 2014-05-15 18:56:28 -04:00
parent 3c240abf10
commit 4910b6f336
3 changed files with 23 additions and 1 deletions
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3
src/core/mem_map.cpp
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@ -17,6 +17,7 @@ u8* g_base = NULL; ///< The base pointer to the aut
MemArena g_arena; ///< The MemArena class
u8* g_exefs_code = NULL; ///< ExeFS:/.code is loaded here
u8* g_system_mem = NULL; ///< System memory
u8* g_heap = NULL; ///< Application heap (main memory)
u8* g_heap_gsp = NULL; ///< GSP heap (main memory)
u8* g_vram = NULL; ///< Video memory (VRAM) pointer
@ -27,6 +28,7 @@ u8* g_physical_bootrom = NULL; ///< Bootrom physical memory
u8* g_uncached_bootrom = NULL;
u8* g_physical_exefs_code = NULL; ///< Phsical ExeFS:/.code is loaded here
u8* g_physical_system_mem = NULL; ///< System physical memory
u8* g_physical_fcram = NULL; ///< Main physical memory (FCRAM)
u8* g_physical_heap_gsp = NULL; ///< GSP heap physical memory
u8* g_physical_vram = NULL; ///< Video physical memory (VRAM)
@ -39,6 +41,7 @@ static MemoryView g_views[] = {
{&g_vram, &g_physical_vram, VRAM_VADDR, VRAM_SIZE, 0},
{&g_heap, &g_physical_fcram, HEAP_VADDR, HEAP_SIZE, MV_IS_PRIMARY_RAM},
{&g_shared_mem, &g_physical_shared_mem, SHARED_MEMORY_VADDR, SHARED_MEMORY_SIZE, 0},
{&g_system_mem, &g_physical_system_mem, SYSTEM_MEMORY_VADDR, SYSTEM_MEMORY_SIZE, 0},
{&g_kernel_mem, &g_physical_kernel_mem, KERNEL_MEMORY_VADDR, KERNEL_MEMORY_SIZE, 0},
{&g_heap_gsp, &g_physical_heap_gsp, HEAP_GSP_VADDR, HEAP_GSP_SIZE, 0},
};

7
src/core/mem_map.h
View file

@ -47,6 +47,12 @@ enum {
EXEFS_CODE_VADDR_END = (EXEFS_CODE_VADDR + EXEFS_CODE_SIZE),
EXEFS_CODE_MASK = 0x03FFFFFF,
// Region of FCRAM used by system
SYSTEM_MEMORY_SIZE = 0x02C00000, ///< 44MB
SYSTEM_MEMORY_VADDR = 0x04000000,
SYSTEM_MEMORY_VADDR_END = (SYSTEM_MEMORY_VADDR + SYSTEM_MEMORY_SIZE),
SYSTEM_MEMORY_MASK = 0x03FFFFFF,
HEAP_SIZE = FCRAM_SIZE, ///< Application heap size
//HEAP_PADDR = HEAP_GSP_SIZE,
//HEAP_PADDR_END = (HEAP_PADDR + HEAP_SIZE),
@ -116,6 +122,7 @@ extern u8* g_heap; ///< Application heap (main memory)
extern u8* g_vram; ///< Video memory (VRAM)
extern u8* g_shared_mem; ///< Shared memory
extern u8* g_kernel_mem; ///< Kernel memory
extern u8* g_system_mem; ///< System memory
extern u8* g_exefs_code; ///< ExeFS:/.code is loaded here
void Init();

14
src/core/mem_map_funcs.cpp
View file

@ -73,6 +73,10 @@ inline void _Read(T &var, const u32 addr) {
} else if ((vaddr >= SHARED_MEMORY_VADDR) && (vaddr < SHARED_MEMORY_VADDR_END)) {
var = *((const T*)&g_shared_mem[vaddr & SHARED_MEMORY_MASK]);
// System memory
} else if ((vaddr >= SYSTEM_MEMORY_VADDR) && (vaddr < SYSTEM_MEMORY_VADDR_END)) {
var = *((const T*)&g_system_mem[vaddr & SYSTEM_MEMORY_MASK]);
// Config memory
} else if ((vaddr >= CONFIG_MEMORY_VADDR) && (vaddr < CONFIG_MEMORY_VADDR_END)) {
ConfigMem::Read<T>(var, vaddr);
@ -115,6 +119,10 @@ inline void _Write(u32 addr, const T data) {
} else if ((vaddr >= SHARED_MEMORY_VADDR) && (vaddr < SHARED_MEMORY_VADDR_END)) {
*(T*)&g_shared_mem[vaddr & SHARED_MEMORY_MASK] = data;
// System memory
} else if ((vaddr >= SYSTEM_MEMORY_VADDR) && (vaddr < SYSTEM_MEMORY_VADDR_END)) {
*(T*)&g_system_mem[vaddr & SYSTEM_MEMORY_MASK] = data;
// VRAM
} else if ((vaddr >= VRAM_VADDR) && (vaddr < VRAM_VADDR_END)) {
*(T*)&g_vram[vaddr & VRAM_MASK] = data;
@ -153,9 +161,13 @@ u8 *GetPointer(const u32 addr) {
return g_heap + (vaddr & HEAP_MASK);
// Shared memory
} else if ((vaddr > SHARED_MEMORY_VADDR) && (vaddr < SHARED_MEMORY_VADDR_END)) {
} else if ((vaddr >= SHARED_MEMORY_VADDR) && (vaddr < SHARED_MEMORY_VADDR_END)) {
return g_shared_mem + (vaddr & SHARED_MEMORY_MASK);
// System memory
} else if ((vaddr >= SYSTEM_MEMORY_VADDR) && (vaddr < SYSTEM_MEMORY_VADDR_END)) {
return g_system_mem + (vaddr & SYSTEM_MEMORY_MASK);
// VRAM
} else if ((vaddr > VRAM_VADDR) && (vaddr < VRAM_VADDR_END)) {
return g_vram + (vaddr & VRAM_MASK);