From: Lucas Stach <dev@lynxeye.de>
To: barebox@lists.infradead.org
Subject: [PATCH 4/4] arm: tegra: enable ARM errata workarounds
Date: Wed, 25 Jun 2014 09:18:21 +0200 [thread overview]
Message-ID: <1403680701-10494-4-git-send-email-dev@lynxeye.de> (raw)
In-Reply-To: <1403680701-10494-1-git-send-email-dev@lynxeye.de>
From: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
---
arch/arm/mach-tegra/tegra_maincomplex_init.c | 21 +++++++++++++++++++--
1 file changed, 19 insertions(+), 2 deletions(-)
diff --git a/arch/arm/mach-tegra/tegra_maincomplex_init.c b/arch/arm/mach-tegra/tegra_maincomplex_init.c
index 17490a4..4a362dd 100644
--- a/arch/arm/mach-tegra/tegra_maincomplex_init.c
+++ b/arch/arm/mach-tegra/tegra_maincomplex_init.c
@@ -18,6 +18,7 @@
#include <sizes.h>
#include <asm/barebox-arm-head.h>
#include <asm/barebox-arm.h>
+#include <asm/errata.h>
#include <mach/lowlevel.h>
#include <mach/tegra20-pmc.h>
#include <mach/tegra20-car.h>
@@ -30,6 +31,23 @@ void tegra_maincomplex_entry(void)
arm_cpu_lowlevel_init();
+ chiptype = tegra_get_chiptype();
+
+ /* enable ARM errata workarounds early */
+ switch (chiptype) {
+ case TEGRA20:
+ enable_arm_errata_716044_war();
+ enable_arm_errata_742230_war();
+ enable_arm_errata_751472_war();
+ break;
+ case TEGRA30:
+ enable_arm_errata_743622_war();
+ enable_arm_errata_751472_war();
+ break;
+ default:
+ break;
+ }
+
/* switch to PLLX */
writel(CRC_CCLK_BURST_POLICY_SYS_STATE_RUN <<
CRC_CCLK_BURST_POLICY_SYS_STATE_SHIFT |
@@ -38,8 +56,6 @@ void tegra_maincomplex_entry(void)
TEGRA_CLK_RESET_BASE + CRC_CCLK_BURST_POLICY);
writel(CRC_SUPER_CDIV_ENB, TEGRA_CLK_RESET_BASE + CRC_SUPER_CCLK_DIV);
- chiptype = tegra_get_chiptype();
-
if (chiptype >= TEGRA114) {
asm("mrc p15, 1, %0, c9, c0, 2" : : "r" (reg));
reg &= ~7;
@@ -51,6 +67,7 @@ void tegra_maincomplex_entry(void)
case TEGRA20:
rambase = 0x0;
ramsize = tegra20_get_ramsize();
+
break;
case TEGRA30:
case TEGRA124:
--
1.9.3
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next prev parent reply other threads:[~2014-06-25 7:14 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-25 7:18 [PATCH 1/4] arm: add " Lucas Stach
2014-06-25 7:18 ` [PATCH 2/4] arm: imx6: add cpu lowlevel init function Lucas Stach
2014-06-25 7:18 ` [PATCH 3/4] arm: imx6: use imx6 specific cpu " Lucas Stach
2014-06-25 7:18 ` Lucas Stach [this message]
2014-06-26 6:05 ` [PATCH 1/4] arm: add errata workarounds Sascha Hauer
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