diff options
author | Stefano Babic <sbabic@denx.de> | 2014-01-26 12:11:54 +0100 |
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committer | Stefano Babic <sbabic@denx.de> | 2014-01-26 12:11:54 +0100 |
commit | 707acd01ded3c60a4e277f7c5432d397897b4dfd (patch) | |
tree | 5730e1e1f0bac6c1aeddc261cb412fc3d5f220fd /arch/arm/include/asm/macro.h | |
parent | be2a3bb39adf1fdd274fc427e30ef62eb86441a1 (diff) | |
parent | c71b4dd2da0dcddabd7c29e6c3dc8a495d4bd928 (diff) |
Merge branch 'master' of git://git.denx.de/u-boot-arm
Diffstat (limited to 'arch/arm/include/asm/macro.h')
-rw-r--r-- | arch/arm/include/asm/macro.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/arch/arm/include/asm/macro.h b/arch/arm/include/asm/macro.h index ff13f36ba0..f77e4b880e 100644 --- a/arch/arm/include/asm/macro.h +++ b/arch/arm/include/asm/macro.h @@ -54,5 +54,58 @@ bcs 1b .endm +#ifdef CONFIG_ARM64 +/* + * Register aliases. + */ +lr .req x30 + +/* + * Branch according to exception level + */ +.macro switch_el, xreg, el3_label, el2_label, el1_label + mrs \xreg, CurrentEL + cmp \xreg, 0xc + b.eq \el3_label + cmp \xreg, 0x8 + b.eq \el2_label + cmp \xreg, 0x4 + b.eq \el1_label +.endm + +/* + * Branch if current processor is a slave, + * choose processor with all zero affinity value as the master. + */ +.macro branch_if_slave, xreg, slave_label + mrs \xreg, mpidr_el1 + tst \xreg, #0xff /* Test Affinity 0 */ + b.ne \slave_label + lsr \xreg, \xreg, #8 + tst \xreg, #0xff /* Test Affinity 1 */ + b.ne \slave_label + lsr \xreg, \xreg, #8 + tst \xreg, #0xff /* Test Affinity 2 */ + b.ne \slave_label + lsr \xreg, \xreg, #16 + tst \xreg, #0xff /* Test Affinity 3 */ + b.ne \slave_label +.endm + +/* + * Branch if current processor is a master, + * choose processor with all zero affinity value as the master. + */ +.macro branch_if_master, xreg1, xreg2, master_label + mrs \xreg1, mpidr_el1 + lsr \xreg2, \xreg1, #32 + lsl \xreg1, \xreg1, #40 + lsr \xreg1, \xreg1, #40 + orr \xreg1, \xreg1, \xreg2 + cbz \xreg1, \master_label +.endm + +#endif /* CONFIG_ARM64 */ + #endif /* __ASSEMBLY__ */ #endif /* __ASM_ARM_MACRO_H__ */ |