[PATCH v1 1/5] ARM: trusted_foundations: Implement L2 cache initialization callback
From: linux@armlinux.org.uk (Russell King - ARM Linux)
Date: 2018-05-20 14:08:25
Also in:
linux-tegra, lkml
On Sun, May 20, 2018 at 01:15:38PM +0300, Dmitry Osipenko wrote:
quoted hunk ↗ jump to hunk
Implement L2 cache initialization firmware callback that should be invoked early in boot to enable cache HW. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> --- arch/arm/firmware/trusted_foundations.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+)diff --git a/arch/arm/firmware/trusted_foundations.c b/arch/arm/firmware/trusted_foundations.c index 3fb1b5a1dce9..198ce5c75ca0 100644 --- a/arch/arm/firmware/trusted_foundations.c +++ b/arch/arm/firmware/trusted_foundations.c@@ -18,8 +18,13 @@ #include <linux/init.h> #include <linux/of.h> #include <asm/firmware.h> +#include <asm/outercache.h> #include <asm/trusted_foundations.h> +#define TF_CACHE_MAINT 0xfffff100 + +#define TF_CACHE_INIT 1 + #define TF_SET_CPU_BOOT_ADDR_SMC 0xfffff200 #define TF_CPU_PM 0xfffffffc@@ -63,9 +68,27 @@ static int tf_prepare_idle(void) return 0; } +#ifdef CONFIG_CACHE_L2X0 +static void tf_cache_write_sec(unsigned long val, unsigned int reg) +{ + pr_warn("%s: Ignoring write [0x%x]: 0x%08lx\n", __func__, reg, val);
Why at warning level? Is this some issue that the user needs to be warned about? -- RMK's Patch system: http://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line in suburbia: sync at 8.8Mbps down 630kbps up According to speedtest.net: 8.21Mbps down 510kbps up