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. Also use arm_pm_restart instead of arm_arch_reset and reset the the system using the PMC reset feature rather then the CAR system reset.
Signed-off-by: Peter De Schrijver <[email protected]> --- 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 | 41 +++++++++++++++++++++----------- 7 files changed, 53 insertions(+), 23 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..35cf81a 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. * @@ -33,16 +33,15 @@ void tegra_assert_system_reset(char mode, const char *cmd) { - void __iomem *reset = IO_ADDRESS(TEGRA_CLK_RESET_BASE + 0x04); + void __iomem *reset = IO_ADDRESS(TEGRA_PMC_BASE + 0); u32 reg; - /* use *_related to avoid spinlock since caches are off */ reg = readl_relaxed(reset); - reg |= 0x04; + reg |= 0x10; writel_relaxed(reg, reset); } -static __initdata struct tegra_clk_init_table common_clk_init_table[] = { +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 +58,39 @@ 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(0x331, p + L2X0_TAG_LATENCY_CTRL); - writel_relaxed(0x441, p + L2X0_DATA_LATENCY_CTRL); + writel_relaxed(tag_latency, p + L2X0_TAG_LATENCY_CTRL); + writel_relaxed(data_latency, p + L2X0_DATA_LATENCY_CTRL); - l2x0_init(p, 0x6C080001, 0x8200c3fe); + aux_ctrl = readl(p + L2X0_CACHE_TYPE); + aux_ctrl = (aux_ctrl & 0x700) << (17-8); + aux_ctrl |= 0x6C000001; + + l2x0_init(p, aux_ctrl, 0x8200c3fe); #endif } -void __init tegra_init_early(void) +static void __init tegra_setup_system_reset(void) +{ + arm_pm_restart = tegra_assert_system_reset; +} + +static void __init tegra_common_init(void) +{ + tegra_setup_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_common_init(); } -- 1.7.7.rc0.72.g4b5ea.dirty -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
