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| author |   Vladimir Murzin <vladimir.murzin@arm.com> | 2019-02-20 15:00:53 +0100 |
|---|---|---|
| committer |   Russell King <rmk+kernel@armlinux.org.uk> | 2019-02-26 11:35:56 +0000 |
| commit | d410a8a49e3e00e07d43037e90f776d522b25a6a (patch) | |
| tree | 5b5d71c63902a8ce3dd318371f7ded6364b947c3 /arch/arm/mm/dma-mapping.c | |
| parent | ARM: 8847/1: pm: fix HYP/SVC mode mismatch when MCPM is used (diff) | |
| download | linux-dev-d410a8a49e3e00e07d43037e90f776d522b25a6a.tar.xz linux-dev-d410a8a49e3e00e07d43037e90f776d522b25a6a.zip | |
ARM: 8849/1: NOMMU: Fix encodings for PMSAv8's PRBAR4/PRLAR4
To access PRBARn, where n is referenced as a binary number:
MRC p15, 0, <Rt>, c6, c8+n[3:1], 4*n[0] ; Read PRBARn into Rt
MCR p15, 0, <Rt>, c6, c8+n[3:1], 4*n[0] ; Write Rt into PRBARn
To access PRLARn, where n is referenced as a binary number:
MRC p15, 0, <Rt>, c6, c8+n[3:1], 4*n[0]+1 ; Read PRLARn into Rt
MCR p15, 0, <Rt>, c6, c8+n[3:1], 4*n[0]+1 ; Write Rt into PRLARn
For PR{B,L}AR4, n is 4, n[0] is 0, n[3:1] is 2, while current encoding
done with n[0] set to 1 which is wrong. Use proper encoding instead.
Fixes: 046835b4aa22b9ab6aa0bb274e3b71047c4b887d ("ARM: 8757/1: NOMMU: Support PMSAv8 MPU")
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Diffstat (limited to 'arch/arm/mm/dma-mapping.c')
0 files changed, 0 insertions, 0 deletions