ARM: 8257/1: OMAP2+: use common l2cache initialization code

This patch implements generic DT L2C initialisation (the one from
init_IRQ in arch/arm/kernel/irq.c) for Omap4 and AM43 platforms and
kills the SoC specific stuff in arch/arm/mach-omap2/omap4-common.c.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Nishanth Menon <nm@ti.com>
Acked-by: Nishanth Menon <nm@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/arch/arm/mach-omap2/board-generic.c b/arch/arm/mach-omap2/board-generic.c
index 608079a1aba6774e5ff6682354ecc08ba2d7a882..c5c480b76da57dc7dfab596e47d4cfad649d17e5 100644 (file)
--- a/arch/arm/mach-omap2/board-generic.c
+++ b/arch/arm/mach-omap2/board-generic.c
@@ -171,6 +171,9 @@ static const char *const omap4_boards_compat[] __initconst = {
 };
 
 DT_MACHINE_START(OMAP4_DT, "Generic OMAP4 (Flattened Device Tree)")
+       .l2c_aux_val    = OMAP_L2C_AUX_CTRL,
+       .l2c_aux_mask   = 0xcf9fffff,
+       .l2c_write_sec  = omap4_l2c310_write_sec,
        .reserve        = omap_reserve,
        .smp            = smp_ops(omap4_smp_ops),
        .map_io         = omap4_map_io,
@@ -214,6 +217,9 @@ static const char *const am43_boards_compat[] __initconst = {
 };
 
 DT_MACHINE_START(AM43_DT, "Generic AM43 (Flattened Device Tree)")
+       .l2c_aux_val    = OMAP_L2C_AUX_CTRL,
+       .l2c_aux_mask   = 0xcf9fffff,
+       .l2c_write_sec  = omap4_l2c310_write_sec,
        .map_io         = am33xx_map_io,
        .init_early     = am43xx_init_early,
        .init_late      = am43xx_init_late,

diff --git a/arch/arm/mach-omap2/common.h b/arch/arm/mach-omap2/common.h
index 377eea849e7bcdaf1142f6b1087ed6857a92b046..2610c9f8d29fd77b5c5a4c1e1979dfc0530a659d 100644 (file)
--- a/arch/arm/mach-omap2/common.h
+++ b/arch/arm/mach-omap2/common.h
@@ -35,6 +35,7 @@
 #include <linux/irqchip/irq-omap-intc.h>
 
 #include <asm/proc-fns.h>
+#include <asm/hardware/cache-l2x0.h>
 
 #include "i2c.h"
 #include "serial.h"
@@ -94,11 +95,18 @@ extern void omap3_gptimer_timer_init(void);
 extern void omap4_local_timer_init(void);
 #ifdef CONFIG_CACHE_L2X0
 int omap_l2_cache_init(void);
+#define OMAP_L2C_AUX_CTRL      (L2C_AUX_CTRL_SHARED_OVERRIDE | \
+                                L310_AUX_CTRL_DATA_PREFETCH | \
+                                L310_AUX_CTRL_INSTR_PREFETCH)
+void omap4_l2c310_write_sec(unsigned long val, unsigned reg);
 #else
 static inline int omap_l2_cache_init(void)
 {
        return 0;
 }
+
+#define OMAP_L2C_AUX_CTRL      0
+#define omap4_l2c310_write_sec NULL
 #endif
 extern void omap5_realtime_timer_init(void);
 

diff --git a/arch/arm/mach-omap2/omap4-common.c b/arch/arm/mach-omap2/omap4-common.c
index b7cb44abe49b35a7a03c3c9f172eca5daeb7b4a7..fe99ceff2e2d63f737e8f090b2e6529053e8aecb 100644 (file)
--- a/arch/arm/mach-omap2/omap4-common.c
+++ b/arch/arm/mach-omap2/omap4-common.c
@@ -166,7 +166,7 @@ void __iomem *omap4_get_l2cache_base(void)
        return l2cache_base;
 }
 
-static void omap4_l2c310_write_sec(unsigned long val, unsigned reg)
+void omap4_l2c310_write_sec(unsigned long val, unsigned reg)
 {
        unsigned smc_op;
 
@@ -201,24 +201,10 @@ static void omap4_l2c310_write_sec(unsigned long val, unsigned reg)
 
 int __init omap_l2_cache_init(void)
 {
-       u32 aux_ctrl;
-
        /* Static mapping, never released */
        l2cache_base = ioremap(OMAP44XX_L2CACHE_BASE, SZ_4K);
        if (WARN_ON(!l2cache_base))
                return -ENOMEM;
-
-       /* 16-way associativity, parity disabled, way size - 64KB (es2.0 +) */
-       aux_ctrl = L2C_AUX_CTRL_SHARED_OVERRIDE |
-                  L310_AUX_CTRL_DATA_PREFETCH |
-                  L310_AUX_CTRL_INSTR_PREFETCH;
-
-       outer_cache.write_sec = omap4_l2c310_write_sec;
-       if (of_have_populated_dt())
-               l2x0_of_init(aux_ctrl, 0xcf9fffff);
-       else
-               l2x0_init(l2cache_base, aux_ctrl, 0xcf9fffff);
-
        return 0;
 }
 #endif