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- added I/D-cache invalidate

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git-svn-id: http://moon:8086/svn/mips@38 a8ebac50-d88d-4704-bea3-6648445a41b3
This commit is contained in:
jens
2015-05-29 20:05:22 +00:00
parent d242dfb4e8
commit 8c235914f4
2 changed files with 66 additions and 0 deletions
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src/bootloader/libsys_boot.c
+58
View File
@@ -80,6 +80,64 @@ uint32_t CP0_PRID_read(void)
return result;
}
void CP0_TR_write_ptr(uint32_t* pPtr)
{
__asm__
(
"swc0 $31, 0(%[pPtr])\n"
:
: [pPtr] "r" (pPtr)
);
}
void CP0_TR_read_ptr(uint32_t* pPtr)
{
__asm__
(
"lwc0 $31, 0(%[pPtr])\n"
:
: [pPtr] "r" (pPtr)
);
}
void ICACHE_invalidate_all(void)
{
__asm__
(
"cop0 32\n"
);
}
void ICACHE_invalidate_at(uint32_t* pPtr)
{
__asm__
(
"mtc0 %[pPtr], $31\n"
"cop0 33\n"
:
: [pPtr] "r" (pPtr)
);
}
void DCACHE_invalidate_all(void)
{
__asm__
(
"cop0 34\n"
);
}
void DCACHE_invalidate_at(uint32_t* pPtr)
{
__asm__
(
"mtc0 %[pPtr], $31\n"
"cop0 35\n"
:
: [pPtr] "r" (pPtr)
);
}
// ---------------------------------------------------------------------------------
char readchar(void)
{
src/bootloader/libsys_boot.h
+8
View File
@@ -59,6 +59,14 @@ void CP0_SR_write(uint32_t val);
uint32_t CP0_CR_read(void);
void CP0_CR_write(uint32_t val);
uint32_t CP0_PRID_read(void);
uint32_t CP0_TR_read(void);
void CP0_TR_write(uint32_t val);
void CP0_TR_write_ptr(uint32_t* pPtr);
void CP0_TR_read_ptr(uint32_t* pPtr);
void ICACHE_invalidate_all(void);
void ICACHE_invalidate_at(uint32_t* pPtr);
void DCACHE_invalidate_all(void);
void DCACHE_invalidate_at(uint32_t* pPtr);
// General
char readchar(void);