From: digetx@gmail.com (Dmitry Osipenko)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v1 3/5] ARM: tegra: Setup L2 cache using Trusted Foundations firmware
Date: Sun, 20 May 2018 13:15:40 +0300 [thread overview]
Message-ID: <20180520101542.12206-4-digetx@gmail.com> (raw)
In-Reply-To: <20180520101542.12206-1-digetx@gmail.com>
On Tegra20/30 L2 cache must be initialized using firmware call if CPU
is running in insecure mode. Initialize L2 cache and setup the outer-cache
callbacks in early boot using the firmware API.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
arch/arm/mach-tegra/tegra.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/arch/arm/mach-tegra/tegra.c b/arch/arm/mach-tegra/tegra.c
index f9587be48235..590b1cf1a8c4 100644
--- a/arch/arm/mach-tegra/tegra.c
+++ b/arch/arm/mach-tegra/tegra.c
@@ -38,6 +38,7 @@
#include <soc/tegra/fuse.h>
#include <soc/tegra/pmc.h>
+#include <asm/firmware.h>
#include <asm/hardware/cache-l2x0.h>
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
@@ -70,9 +71,23 @@ u32 tegra_uart_config[3] = {
0,
};
+static void __init tegra_trusted_foundations_l2x0_cache_init(void)
+{
+ if (IS_ENABLED(CONFIG_CACHE_L2X0) &&
+ IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC) &&
+ of_machine_is_compatible("nvidia,tegra20"))
+ call_firmware_op(l2x0_init);
+
+ if (IS_ENABLED(CONFIG_CACHE_L2X0) &&
+ IS_ENABLED(CONFIG_ARCH_TEGRA_3x_SOC) &&
+ of_machine_is_compatible("nvidia,tegra30"))
+ call_firmware_op(l2x0_init);
+}
+
static void __init tegra_init_early(void)
{
of_register_trusted_foundations();
+ tegra_trusted_foundations_l2x0_cache_init();
tegra_cpu_reset_handler_init();
}
--
2.17.0
next prev parent reply other threads:[~2018-05-20 10:15 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-20 10:15 [PATCH v1 0/5] Initial support of Trusted Foundations on Tegra30 Dmitry Osipenko
2018-05-20 10:15 ` [PATCH v1 1/5] ARM: trusted_foundations: Implement L2 cache initialization callback Dmitry Osipenko
2018-05-20 14:08 ` Russell King - ARM Linux
2018-05-20 14:53 ` Dmitry Osipenko
2018-05-20 10:15 ` [PATCH v1 2/5] ARM: trusted_foundations: Provide information about whether firmware is registered Dmitry Osipenko
2018-05-20 10:15 ` Dmitry Osipenko [this message]
2018-05-20 10:15 ` [PATCH v1 4/5] ARM: tegra: Don't apply CPU erratas in insecure mode Dmitry Osipenko
2018-05-21 7:36 ` Dmitry Osipenko
2018-05-20 10:15 ` [PATCH v1 5/5] ARM: tegra: Always boot CPU in ARM-mode Dmitry Osipenko
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20180520101542.12206-4-digetx@gmail.com \
--to=digetx@gmail.com \
--cc=linux-arm-kernel@lists.infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).