xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

nds32: support hardware prefetcher

Browse Source 
We add a config for user to enable or disable this feature.
It can be used to control the hardware prefetch function.

Signed-off-by: Nylon Chen <nylon7@andestech.com>
Acked-by: Greentime Hu <greentime@andestech.com>
Signed-off-by: Greentime Hu <greentime@andestech.com>
This commit is contained in:
Nylon Chen
2018-11-08 19:28:15 +08:00
committed by Greentime Hu
parent a5234068e6
commit e2f3f8b4a4
4 changed files with 21 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
arch/nds32/include/asm/bitfield.h
View File

@@ -740,14 +740,20 @@
#define N13MISC_CTL_offRTP 1 /* Disable Return Target Predictor */
#define N13MISC_CTL_offPTEPF 2 /* Disable HPTWK L2 PTE pefetch */
#define N13MISC_CTL_offSP_SHADOW_EN 4 /* Enable shadow stack pointers */
#define MISC_CTL_offHWPRE 11 /* Enable HardWare PREFETCH */
/* bit 6, 9:31 reserved */
#define N13MISC_CTL_makBTB ( 0x1 << N13MISC_CTL_offBTB )
#define N13MISC_CTL_makRTP ( 0x1 << N13MISC_CTL_offRTP )
#define N13MISC_CTL_makPTEPF ( 0x1 << N13MISC_CTL_offPTEPF )
#define N13MISC_CTL_makSP_SHADOW_EN ( 0x1 << N13MISC_CTL_offSP_SHADOW_EN )
#define MISC_CTL_makHWPRE_EN ( 0x1 << MISC_CTL_offHWPRE )
#ifdef CONFIG_HW_PRE
#define MISC_init (N13MISC_CTL_makBTB|N13MISC_CTL_makRTP|N13MISC_CTL_makSP_SHADOW_EN|MISC_CTL_makHWPRE_EN)
#else
#define MISC_init (N13MISC_CTL_makBTB|N13MISC_CTL_makRTP|N13MISC_CTL_makSP_SHADOW_EN)
#endif
/******************************************************************************
* PRUSR_ACC_CTL (Privileged Resource User Access Control Registers)