From 91cad66628c1af4693c1a5553a72f825bd4d63d6 Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Mon, 4 Mar 2019 14:48:50 +0100 Subject: ARM: Add basic Layerscape support This adds basic Layerscape support: - Makefile/Kconfig - Register maps - errata workarounds Signed-off-by: Sascha Hauer --- arch/arm/mach-layerscape/lowlevel.S | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) create mode 100644 arch/arm/mach-layerscape/lowlevel.S (limited to 'arch/arm/mach-layerscape/lowlevel.S') diff --git a/arch/arm/mach-layerscape/lowlevel.S b/arch/arm/mach-layerscape/lowlevel.S new file mode 100644 index 0000000000..adb3e54367 --- /dev/null +++ b/arch/arm/mach-layerscape/lowlevel.S @@ -0,0 +1,18 @@ +#include + +.section .text.ls1046a_init_l2_latency +ENTRY(ls1046a_init_l2_latency) + /* Initialize the L2 RAM latency */ + mrs x1, S3_1_c11_c0_2 + mov x0, #0x1C7 + /* Clear L2 Tag RAM latency and L2 Data RAM latency */ + bic x1, x1, x0 + /* Set L2 data ram latency bits [2:0] */ + orr x1, x1, #0x2 + /* set L2 tag ram latency bits [8:6] */ + orr x1, x1, #0x80 + msr S3_1_c11_c0_2, x1 + isb + + ret +ENDPROC(ls1046a_init_l2_latency); -- cgit v1.2.3