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refactored some mem_map stuff

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pull/8/head
ShizZy 12 years ago
parent b2c5690413
commit cd6e998e9a
2 changed files with 36 additions and 19 deletions
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53
src/core/src/mem_map.cpp
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@ -33,29 +33,47 @@
namespace Memory {
u8* g_mem_base = NULL; ///< The base pointer to the auto-mirrored arena.
u8* g_base = NULL; ///< The base pointer to the auto-mirrored arena.
MemArena g_mem_arena; ///< The MemArena class
MemArena g_arena; ///< The MemArena class
u8* g_bootrom = NULL; ///< Bootrom memory (super secret code/data @ 0x8000) pointer
u8* g_fcram = NULL; ///< Main memory (FCRAM) pointer
u8* g_vram = NULL; ///< Video memory (VRAM) pointer
u8* g_physical_bootrom = NULL; ///< Bootrom physical memory (super secret code/data @ 0x8000)
u8* g_uncached_bootrom = NULL;
u8* g_physical_fcram = NULL; ///< Main physical memory (FCRAM)
u8* g_physical_vram = NULL; ///< Video physical memory (VRAM)
// We don't declare the IO region in here since its handled by other means.
static MemoryView g_mem_views[] =
static MemoryView g_views[] =
{
{NULL, NULL, 0x00000000, MEM_BOOTROM_SIZE, 0},
{NULL, NULL, 0x00010000, MEM_BOOTROM_SIZE, MV_MIRROR_PREVIOUS},
{NULL, NULL, 0x17E00000, MEM_MPCORE_PRIV_SIZE, 0},
{&g_vram, &g_physical_vram, 0x18000000, MEM_VRAM_SIZE, 0},
{NULL, NULL, 0x1FF00000, MEM_DSP_SIZE, 0},
{NULL, NULL, 0x1FF80000, MEM_AXI_WRAM_SIZE, 0},
{&g_ram, &g_physical_fcram, 0x20000000, MEM_FCRAM_SIZE, MV_IS_PRIMARY_RAM},
{&g_bootrom, &g_physical_bootrom, 0x00000000, MEM_BOOTROM_SIZE, 0},
{NULL, &g_uncached_bootrom, 0x00010000, MEM_BOOTROM_SIZE, MV_MIRROR_PREVIOUS},
// //{NULL, NULL, 0x17E00000, MEM_MPCORE_PRIV_SIZE, 0},
{&g_vram, &g_physical_vram, 0x18000000, MEM_VRAM_SIZE, 0},
// //{NULL, NULL, 0x1FF00000, MEM_DSP_SIZE, 0},
// //{NULL, NULL, 0x1FF80000, MEM_AXI_WRAM_SIZE, 0},
{&g_fcram, &g_physical_fcram, 0x20000000, MEM_FCRAM_SIZE, MV_IS_PRIMARY_RAM},
};
static const int kNumMemViews = sizeof(g_mem_views) / sizeof(MemoryView); ///< Number of mem views
/*static MemoryView views[] =
{
{&m_pScratchPad, &m_pPhysicalScratchPad, 0x00010000, SCRATCHPAD_SIZE, 0},
{NULL, &m_pUncachedScratchPad, 0x40010000, SCRATCHPAD_SIZE, MV_MIRROR_PREVIOUS},
{&m_pVRAM, &m_pPhysicalVRAM, 0x04000000, 0x00800000, 0},
{NULL, &m_pUncachedVRAM, 0x44000000, 0x00800000, MV_MIRROR_PREVIOUS},
{&m_pRAM, &m_pPhysicalRAM, 0x08000000, g_MemorySize, MV_IS_PRIMARY_RAM}, // only from 0x08800000 is it usable (last 24 megs)
{NULL, &m_pUncachedRAM, 0x48000000, g_MemorySize, MV_MIRROR_PREVIOUS | MV_IS_PRIMARY_RAM},
{NULL, &m_pKernelRAM, 0x88000000, g_MemorySize, MV_MIRROR_PREVIOUS | MV_IS_PRIMARY_RAM},
// TODO: There are a few swizzled mirrors of VRAM, not sure about the best way to
// implement those.
};*/
static const int kNumMemViews = sizeof(g_views) / sizeof(MemoryView); ///< Number of mem views
u8 Read8(const u32 addr) {
return 0xDE;
@ -81,11 +99,10 @@ void Write32(const u32 addr, const u32 data) {
void Init() {
int flags = 0;
for (size_t i = 0; i < ARRAY_SIZE(g_mem_views); i++) {
if (g_mem_views[i].flags & MV_IS_PRIMARY_RAM)
g_mem_views[i].size = MEMORY_SIZE;
for (size_t i = 0; i < ARRAY_SIZE(g_views); i++) {
if (g_views[i].flags & MV_IS_PRIMARY_RAM)
g_views[i].size = MEMORY_SIZE;
}
g_base = MemoryMap_Setup(g_mem_views, kNumMemViews, flags, &g_mem_arena);
INFO_LOG(MEMMAP, "Memory system initialized. RAM at %p (mirror at 0 @ %p)", g_fcram,
g_physical_fcram);
@ -93,9 +110,9 @@ void Init() {
void Shutdown() {
u32 flags = 0;
MemoryMap_Shutdown(g_mem_views, kNumMemViews, flags, &g_mem_arena);
g_mem_arena.ReleaseSpace();
g_mem_base = NULL;
MemoryMap_Shutdown(g_views, kNumMemViews, flags, &g_arena);
g_arena.ReleaseSpace();
g_base = NULL;
INFO_LOG(MEMMAP, "Memory system shut down.");
}

2
src/core/src/mem_map.h
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@ -58,7 +58,7 @@ extern u8 *g_base;
// These are guaranteed to point to "low memory" addresses (sub-32-bit).
// 64-bit: Pointers to low-mem (sub-0x10000000) mirror
// 32-bit: Same as the corresponding physical/virtual pointers.
extern u8* g_ram; ///< Main memory
extern u8* g_fcram; ///< Main memory
extern u8* g_vram; ///< Video memory (VRAM)
void Init();

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