From: Peter De Schrijver <pdeschrijver@nvidia.com>
To: Peter De Schrijver <pdeschrijver@nvidia.com>
Cc: Russell King <linux@arm.linux.org.uk>,
Colin Cross <ccross@android.com>, Olof Johansson <olof@lixom.net>,
Stephen Warren <swarren@nvidia.com>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <linux-tegra@vger.kernel.org>
Subject: [PATCH v2 2/8] arm/tegra: prepare early init for multiple tegra variants
Date: Wed, 2 Nov 2011 16:09:01 +0200 [thread overview]
Message-ID: <1320242948-21061-3-git-send-email-pdeschrijver@nvidia.com> (raw)
In-Reply-To: <1320242948-21061-1-git-send-email-pdeschrijver@nvidia.com>
This patch splits the early init code in a common and a tegra20 specific part.
L2 cache initialization is generalized and discovers the cache associativity
at runtime.
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
---
arch/arm/mach-tegra/board-dt.c | 19 +++++++++++++++++++
arch/arm/mach-tegra/board-harmony.c | 2 +-
arch/arm/mach-tegra/board-paz00.c | 2 +-
arch/arm/mach-tegra/board-seaboard.c | 6 +++---
arch/arm/mach-tegra/board-trimslice.c | 2 +-
arch/arm/mach-tegra/board.h | 4 +---
arch/arm/mach-tegra/common.c | 33 ++++++++++++++++++++++-----------
7 files changed, 48 insertions(+), 20 deletions(-)
diff --git a/arch/arm/mach-tegra/board-dt.c b/arch/arm/mach-tegra/board-dt.c
index d368f8d..a7bae50 100644
--- a/arch/arm/mach-tegra/board-dt.c
+++ b/arch/arm/mach-tegra/board-dt.c
@@ -118,6 +118,25 @@ static void __init tegra_dt_init(void)
of_platform_populate(NULL, tegra_dt_match_table, tegra20_auxdata_lookup, NULL);
}
+static struct {
+ const char *machine;
+ void (*init)(void);
+} early_init[] __initdata = {
+ { "nvidia,tegra20", tegra20_init_early },
+};
+
+static void __init tegra_init_early(void)
+{
+
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(early_init); i++)
+ if (of_machine_is_compatible(early_init[i].machine))
+ return early_init[i].init();
+
+ pr_warn("Unknown platform detected\n");
+}
+
static const char * tegra_dt_board_compat[] = {
"nvidia,harmony",
"nvidia,seaboard",
diff --git a/arch/arm/mach-tegra/board-harmony.c b/arch/arm/mach-tegra/board-harmony.c
index f0bdc5e..c422aeb 100644
--- a/arch/arm/mach-tegra/board-harmony.c
+++ b/arch/arm/mach-tegra/board-harmony.c
@@ -185,7 +185,7 @@ MACHINE_START(HARMONY, "harmony")
.atag_offset = 0x100,
.fixup = tegra_harmony_fixup,
.map_io = tegra_map_common_io,
- .init_early = tegra_init_early,
+ .init_early = tegra20_init_early,
.init_irq = tegra_init_irq,
.timer = &tegra_timer,
.init_machine = tegra_harmony_init,
diff --git a/arch/arm/mach-tegra/board-paz00.c b/arch/arm/mach-tegra/board-paz00.c
index 602f8dd..6997a47 100644
--- a/arch/arm/mach-tegra/board-paz00.c
+++ b/arch/arm/mach-tegra/board-paz00.c
@@ -188,7 +188,7 @@ MACHINE_START(PAZ00, "Toshiba AC100 / Dynabook AZ")
.atag_offset = 0x100,
.fixup = tegra_paz00_fixup,
.map_io = tegra_map_common_io,
- .init_early = tegra_init_early,
+ .init_early = tegra20_init_early,
.init_irq = tegra_init_irq,
.timer = &tegra_timer,
.init_machine = tegra_paz00_init,
diff --git a/arch/arm/mach-tegra/board-seaboard.c b/arch/arm/mach-tegra/board-seaboard.c
index bf13ea3..5e42e08 100644
--- a/arch/arm/mach-tegra/board-seaboard.c
+++ b/arch/arm/mach-tegra/board-seaboard.c
@@ -282,7 +282,7 @@ static void __init tegra_wario_init(void)
MACHINE_START(SEABOARD, "seaboard")
.atag_offset = 0x100,
.map_io = tegra_map_common_io,
- .init_early = tegra_init_early,
+ .init_early = tegra20_init_early,
.init_irq = tegra_init_irq,
.timer = &tegra_timer,
.init_machine = tegra_seaboard_init,
@@ -291,7 +291,7 @@ MACHINE_END
MACHINE_START(KAEN, "kaen")
.atag_offset = 0x100,
.map_io = tegra_map_common_io,
- .init_early = tegra_init_early,
+ .init_early = tegra20_init_early,
.init_irq = tegra_init_irq,
.timer = &tegra_timer,
.init_machine = tegra_kaen_init,
@@ -300,7 +300,7 @@ MACHINE_END
MACHINE_START(WARIO, "wario")
.atag_offset = 0x100,
.map_io = tegra_map_common_io,
- .init_early = tegra_init_early,
+ .init_early = tegra20_init_early,
.init_irq = tegra_init_irq,
.timer = &tegra_timer,
.init_machine = tegra_wario_init,
diff --git a/arch/arm/mach-tegra/board-trimslice.c b/arch/arm/mach-tegra/board-trimslice.c
index e008c0e..7117e81 100644
--- a/arch/arm/mach-tegra/board-trimslice.c
+++ b/arch/arm/mach-tegra/board-trimslice.c
@@ -175,7 +175,7 @@ MACHINE_START(TRIMSLICE, "trimslice")
.atag_offset = 0x100,
.fixup = tegra_trimslice_fixup,
.map_io = tegra_map_common_io,
- .init_early = tegra_init_early,
+ .init_early = tegra20_init_early,
.init_irq = tegra_init_irq,
.timer = &tegra_timer,
.init_machine = tegra_trimslice_init,
diff --git a/arch/arm/mach-tegra/board.h b/arch/arm/mach-tegra/board.h
index 1d14df7..b86cdab 100644
--- a/arch/arm/mach-tegra/board.h
+++ b/arch/arm/mach-tegra/board.h
@@ -23,9 +23,7 @@
#include <linux/types.h>
-void tegra_assert_system_reset(char mode, const char *cmd);
-
-void __init tegra_init_early(void);
+void __init tegra20_init_early(void);
void __init tegra_map_common_io(void);
void __init tegra_init_irq(void);
void __init tegra_init_clock(void);
diff --git a/arch/arm/mach-tegra/common.c b/arch/arm/mach-tegra/common.c
index 03c2bd4..6173fd8 100644
--- a/arch/arm/mach-tegra/common.c
+++ b/arch/arm/mach-tegra/common.c
@@ -1,5 +1,5 @@
/*
- * arch/arm/mach-tegra/board-harmony.c
+ * arch/arm/mach-tegra/common.c
*
* Copyright (C) 2010 Google, Inc.
*
@@ -42,7 +42,9 @@ void tegra_assert_system_reset(char mode, const char *cmd)
writel_relaxed(reg, reset);
}
-static __initdata struct tegra_clk_init_table common_clk_init_table[] = {
+void (*arch_reset)(char mode, const char *cmd) = tegra_assert_system_reset;
+
+static __initdata struct tegra_clk_init_table tegra20_clk_init_table[] = {
/* name parent rate enabled */
{ "clk_m", NULL, 0, true },
{ "pll_p", "clk_m", 216000000, true },
@@ -59,25 +61,34 @@ static __initdata struct tegra_clk_init_table common_clk_init_table[] = {
{ NULL, NULL, 0, 0},
};
-static void __init tegra_init_cache(void)
+static void __init tegra_init_cache(u32 tag_latency, u32 data_latency)
{
#ifdef CONFIG_CACHE_L2X0
void __iomem *p = IO_ADDRESS(TEGRA_ARM_PERIF_BASE) + 0x3000;
+ u32 aux_ctrl;
+
+ writel_relaxed(tag_latency, p + L2X0_TAG_LATENCY_CTRL);
+ writel_relaxed(data_latency, p + L2X0_DATA_LATENCY_CTRL);
- writel_relaxed(0x331, p + L2X0_TAG_LATENCY_CTRL);
- writel_relaxed(0x441, p + L2X0_DATA_LATENCY_CTRL);
+ aux_ctrl = readl(p + L2X0_CACHE_TYPE);
+ aux_ctrl = (aux_ctrl & 0x700) << (17-8);
+ aux_ctrl |= 0x7C000001;
- l2x0_init(p, 0x6C080001, 0x8200c3fe);
+ l2x0_init(p, aux_ctrl, 0x8200c3fe);
#endif
}
-void __init tegra_init_early(void)
+static void __init tegra_setup_system_reset(void)
+{
+ arm_arch_reset = tegra_assert_system_reset;
+}
+
+void __init tegra20_init_early(void)
{
tegra_init_fuse();
tegra_init_clock();
- tegra_clk_init_from_table(common_clk_init_table);
- tegra_init_cache();
-
- arm_arch_reset = tegra_assert_system_reset;
+ tegra_clk_init_from_table(tegra20_clk_init_table);
+ tegra_init_cache(0x331, 0x441);
+ tegra_setup_system_reset();
}
--
1.7.7.rc0.72.g4b5ea.dirty
next prev parent reply other threads:[~2011-11-02 14:09 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-02 14:08 [PATCH v2 0/8] Add support for tegra30 and cardhu Peter De Schrijver
2011-11-02 14:09 ` [PATCH v2 1/8] arm/tegra: initial device tree for tegra30 Peter De Schrijver
2011-11-04 20:29 ` Stephen Warren
2011-11-02 14:09 ` Peter De Schrijver [this message]
2011-11-02 18:30 ` [PATCH v2 2/8] arm/tegra: prepare early init for multiple tegra variants Colin Cross
2011-11-03 9:21 ` Peter De Schrijver
2011-11-03 10:02 ` Russell King - ARM Linux
2011-11-04 15:09 ` Olof Johansson
2011-11-04 16:30 ` Russell King - ARM Linux
2011-11-07 12:36 ` Peter De Schrijver
2011-11-02 14:09 ` [PATCH v2 3/8] arm/tegra: rename tegra20 pinmux files Peter De Schrijver
2011-11-02 14:09 ` [PATCH v2 4/8] arm/tegra: prepare pinmux code for multiple tegra variants Peter De Schrijver
2011-11-04 20:35 ` Stephen Warren
2011-11-02 14:09 ` [PATCH v2 5/8] arm/tegra: add new fields to struct tegra_pingroup_desc Peter De Schrijver
2011-11-04 21:06 ` Olof Johansson
2011-11-02 14:09 ` [PATCH v2 6/8] arm/tegra: pinmux tables and definitions for tegra30 Peter De Schrijver
2011-11-02 14:09 ` [PATCH v2 7/8] arm/tegra: implement support " Peter De Schrijver
2011-11-04 20:43 ` Stephen Warren
2011-11-07 12:47 ` Peter De Schrijver
2011-11-02 14:09 ` [PATCH v2 8/8] arm/tegra: add support for tegra30 based board cardhu Peter De Schrijver
2011-11-02 15:46 ` Peter De Schrijver
2011-11-02 16:07 ` Stephen Warren
2011-11-02 16:19 ` Peter De Schrijver
2011-11-02 16:24 ` Peter De Schrijver
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=1320242948-21061-3-git-send-email-pdeschrijver@nvidia.com \
--to=pdeschrijver@nvidia.com \
--cc=ccross@android.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-tegra@vger.kernel.org \
--cc=linux@arm.linux.org.uk \
--cc=olof@lixom.net \
--cc=swarren@nvidia.com \
/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
all inboxes | Powered by JetHome®