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Message-ID: <1319561644-6160-4-git-send-email-pdeschrijver@nvidia.com>
Date: Tue, 25 Oct 2011 19:53:57 +0300
From: <pdeschrijver@...dia.com>
To: <pdeschrijver@...dia.com>
CC: Russell King <linux@....linux.org.uk>,
Colin Cross <ccross@...roid.com>,
Olof Johansson <olof@...om.net>,
Stephen Warren <swarren@...dia.com>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>, <linux-tegra@...r.kernel.org>
Subject: [PATCH 3/6] arm/tegra: prepare early init for multiple tegra variants
From: Peter De Schrijver <pdeschrijver@...dia.com>
This patch splits the early init code in a common and a tegra20 specific part.
Signed-off-by: Peter De Schrijver <pdeschrijver@...dia.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 | 18 ++++++++++++------
7 files changed, 38 insertions(+), 15 deletions(-)
diff --git a/arch/arm/mach-tegra/board-dt.c b/arch/arm/mach-tegra/board-dt.c
index 0d22212..9130037 100644
--- a/arch/arm/mach-tegra/board-dt.c
+++ b/arch/arm/mach-tegra/board-dt.c
@@ -119,6 +119,25 @@ static void __init tegra_dt_init(void)
"Unknown platform! Pinmuxing not initialized\n");
}
+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();
+
+ printk(KERN_WARNING "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 e595901..adcdec2 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 1709e5e..8603edf 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 c41e01a..347b159 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 2b2f262..679f166 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 690b888..8553fde 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.
*
@@ -31,8 +31,6 @@
#include "clock.h"
#include "fuse.h"
-void (*arch_reset)(char mode, const char *cmd) = tegra_assert_system_reset;
-
void tegra_assert_system_reset(char mode, const char *cmd)
{
void __iomem *reset = IO_ADDRESS(TEGRA_CLK_RESET_BASE + 0x04);
@@ -44,7 +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 },
@@ -65,19 +65,25 @@ static void __init tegra_init_cache(void)
{
#ifdef CONFIG_CACHE_L2X0
void __iomem *p = IO_ADDRESS(TEGRA_ARM_PERIF_BASE) + 0x3000;
+ u32 aux_ctrl;
writel_relaxed(0x331, p + L2X0_TAG_LATENCY_CTRL);
writel_relaxed(0x441, p + L2X0_DATA_LATENCY_CTRL);
+ writel(2, p + L2X0_PREFETCH_CTRL);
+
+ aux_ctrl = readl(p + L2X0_CACHE_TYPE);
+ aux_ctrl = (aux_ctrl & 0x700) << (17-8);
+ aux_ctrl |= 0x6C000001;
l2x0_init(p, 0x6C080001, 0x8200c3fe);
#endif
}
-void __init tegra_init_early(void)
+void __init tegra20_init_early(void)
{
tegra_init_fuse();
tegra_init_clock();
- tegra_clk_init_from_table(common_clk_init_table);
+ tegra_clk_init_from_table(tegra20_clk_init_table);
tegra_init_cache();
}
--
1.7.7.rc0.72.g4b5ea.dirty
--
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