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MIPS: spaces: Define a couple of handy macros

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Define CKSEGX_SIZE to represent the size of each KSEG segment.

Introduce CKSEG0ADDR_OR_64BIT and CKSEG1ADDR_OR_64BIT to get an XPHYS
address in 64bits and CKSEG[01]ADDR() in 32 bits mode.

Co-developed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
This commit is contained in:
Gregory CLEMENT 2024-02-16 18:42:10 +01:00 committed by Thomas Bogendoerfer
parent 6d74e0fc0a
commit e40192daba
2 changed files with 9 additions and 0 deletions
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5
arch/mips/include/asm/addrspace.h
View File

@ -47,6 +47,11 @@
*/
#define KSEGX(a) ((_ACAST32_(a)) & _ACAST32_(0xe0000000))
/*
* Gives the size of each kernel segment
*/
#define CSEGX_SIZE 0x20000000
/*
* Returns the physical address of a CKSEGx / XKPHYS address
*/

4
arch/mips/include/asm/mach-generic/spaces.h
View File

@ -49,6 +49,8 @@
#define HIGHMEM_START _AC(0x20000000, UL)
#endif
#define CKSEG0ADDR_OR_64BIT(x) CKSEG0ADDR(x)
#define CKSEG1ADDR_OR_64BIT(x) CKSEG1ADDR(x)
#endif /* CONFIG_32BIT */
#ifdef CONFIG_64BIT
@ -82,6 +84,8 @@
#define TO_CAC(x) (CAC_BASE | ((x) & TO_PHYS_MASK))
#define TO_UNCAC(x) (UNCAC_BASE | ((x) & TO_PHYS_MASK))
#define CKSEG0ADDR_OR_64BIT(x) TO_CAC(x)
#define CKSEG1ADDR_OR_64BIT(x) TO_UNCAC(x)
#endif /* CONFIG_64BIT */
/*