ARM: kirkwood: switch to using mvebu mbus
The mvebu mbus code already had most of the support required for
kirkwood. The only difference is that unlike the other mvebu targets
kirkwood doesn't have a bridge control block so the code related to
managing that needs to be compiled out.
Signed-off-by: Chris Packham <judge.packham@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/arch/arm/mach-kirkwood/cpu.c b/arch/arm/mach-kirkwood/cpu.c
index 95dd07f..009b492 100644
--- a/arch/arm/mach-kirkwood/cpu.c
+++ b/arch/arm/mach-kirkwood/cpu.c
@@ -110,6 +110,32 @@
return 0;
}
+static struct mbus_win windows[] = {
+ /* Window 0: PCIE MEM address space */
+ { KW_DEFADR_PCI_MEM, 1024 * 1024 * 256,
+ KWCPU_TARGET_PCIE, KWCPU_ATTR_PCIE_MEM },
+
+ /* Window 1: PCIE IO address space */
+ { KW_DEFADR_PCI_IO, 1024 * 64,
+ KWCPU_TARGET_PCIE, KWCPU_ATTR_PCIE_IO },
+
+ /* Window 2: NAND Flash address space */
+ { KW_DEFADR_NANDF, 1024 * 1024 * 128,
+ KWCPU_TARGET_MEMORY, KWCPU_ATTR_NANDFLASH },
+
+ /* Window 3: SPI Flash address space */
+ { KW_DEFADR_SPIF, 1024 * 1024 * 128,
+ KWCPU_TARGET_MEMORY, KWCPU_ATTR_SPIFLASH },
+
+ /* Window 4: BOOT Memory address space */
+ { KW_DEFADR_BOOTROM, 1024 * 1024 * 128,
+ KWCPU_TARGET_MEMORY, KWCPU_ATTR_BOOTROM },
+
+ /* Window 5: Security SRAM address space */
+ { KW_DEFADR_SASRAM, 1024 * 64,
+ KWCPU_TARGET_SASRAM, KWCPU_ATTR_SASRAM },
+};
+
/*
* SYSRSTn Duration Counter Support
*
@@ -221,15 +247,13 @@
struct kwcpu_registers *cpureg =
(struct kwcpu_registers *)KW_CPU_REG_BASE;
- /* Linux expects` the internal registers to be at 0xf1000000 */
+ /* Linux expects the internal registers to be at 0xf1000000 */
writel(KW_REGS_PHY_BASE, KW_OFFSET_REG);
/* Enable and invalidate L2 cache in write through mode */
writel(readl(&cpureg->l2_cfg) | 0x18, &cpureg->l2_cfg);
invalidate_l2_cache();
- kw_config_adr_windows();
-
#ifdef CONFIG_KIRKWOOD_RGMII_PAD_1V8
/*
* Configures the I/O voltage of the pads connected to Egigabit
@@ -296,6 +320,9 @@
temp = get_cr();
set_cr(temp & ~CR_V);
+ /* Configure mbus windows */
+ mvebu_mbus_probe(windows, ARRAY_SIZE(windows));
+
/* checks and execute resset to factory event */
kw_sysrst_check();
diff --git a/arch/arm/mach-kirkwood/include/mach/cpu.h b/arch/arm/mach-kirkwood/include/mach/cpu.h
index c35cace..3d6b155 100644
--- a/arch/arm/mach-kirkwood/include/mach/cpu.h
+++ b/arch/arm/mach-kirkwood/include/mach/cpu.h
@@ -68,6 +68,13 @@
#define KW_DEFADR_SPIF 0xE8000000
#define KW_DEFADR_BOOTROM 0xF8000000
+struct mbus_win {
+ u32 base;
+ u32 size;
+ u8 target;
+ u8 attr;
+};
+
/*
* read feroceon/sheeva core extra feature register
* using co-proc instruction
@@ -134,6 +141,9 @@
u32 irq_level;
};
+/* Needed for dynamic (board-specific) mbus configuration */
+extern struct mvebu_mbus_state mbus_state;
+
/*
* functions
*/
@@ -141,6 +151,7 @@
unsigned int mvebu_sdram_bs(enum memory_bank bank);
void mvebu_sdram_size_adjust(enum memory_bank bank);
int kw_config_adr_windows(void);
+int mvebu_mbus_probe(struct mbus_win windows[], int count);
void mvebu_config_gpio(unsigned int gpp0_oe_val, unsigned int gpp1_oe_val,
unsigned int gpp0_oe, unsigned int gpp1_oe);
int kw_config_mpp(unsigned int mpp0_7, unsigned int mpp8_15,
diff --git a/arch/arm/mach-mvebu/Makefile b/arch/arm/mach-mvebu/Makefile
index ee2eca9..c0274a6 100644
--- a/arch/arm/mach-mvebu/Makefile
+++ b/arch/arm/mach-mvebu/Makefile
@@ -14,6 +14,7 @@
obj-y = dram.o
obj-y += gpio.o
+obj-y += mbus.o
obj-y += timer.o
else # CONFIG_KIRKWOOD
diff --git a/arch/arm/mach-mvebu/mbus.c b/arch/arm/mach-mvebu/mbus.c
index df4c5cb..7be67b7 100644
--- a/arch/arm/mach-mvebu/mbus.c
+++ b/arch/arm/mach-mvebu/mbus.c
@@ -405,6 +405,7 @@
return 0;
}
+#ifndef CONFIG_KIRKWOOD
static void mvebu_mbus_get_lowest_base(struct mvebu_mbus_state *mbus,
phys_addr_t *base)
{
@@ -451,6 +452,7 @@
val = (size / (64 << 10)) - 1;
writel((val << 16) | 0x1, MBUS_BRIDGE_WIN_CTRL_REG);
}
+#endif
int mbus_dt_setup_win(struct mvebu_mbus_state *mbus,
u32 base, u32 size, u8 target, u8 attr)
@@ -471,12 +473,14 @@
return -ENOMEM;
}
+#ifndef CONFIG_KIRKWOOD
/*
* Re-configure the mbus bridge registers each time this function
* is called. Since it may get called from the board code in
* later boot stages as well.
*/
mvebu_config_mbus_bridge(mbus);
+#endif
return 0;
}