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authorLinus Torvalds <torvalds@linux-foundation.org>2008-07-14 23:06:58 (GMT)
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-14 23:06:58 (GMT)
commit85082fd7cbe3173198aac0eb5e85ab1edcc6352c (patch)
treeedbc09b7945994f78668d218fa02e991c3b3b365 /arch/arm/mach-loki/addr-map.c
parent666484f0250db2e016948d63b3ef33e202e3b8d0 (diff)
parent53ffe3b440aa85af6fc4eda09b2d44bcdd312d4d (diff)
downloadlinux-85082fd7cbe3173198aac0eb5e85ab1edcc6352c.tar.xz
Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (241 commits) [ARM] 5171/1: ep93xx: fix compilation of modules using clocks [ARM] 5133/2: at91sam9g20 defconfig file [ARM] 5130/4: Support for the at91sam9g20 [ARM] 5160/1: IOP3XX: gpio/gpiolib support [ARM] at91: Fix NAND FLASH timings for at91sam9x evaluation kits. [ARM] 5084/1: zylonite: Register AC97 device [ARM] 5085/2: PXA: Move AC97 over to the new central device declaration model [ARM] 5120/1: pxa: correct platform driver names for PXA25x and PXA27x UDC drivers [ARM] 5147/1: pxaficp_ir: drop pxa_gpio_mode calls, as pin setting [ARM] 5145/1: PXA2xx: provide api to control IrDA pins state [ARM] 5144/1: pxaficp_ir: cleanup includes [ARM] pxa: remove pxa_set_cken() [ARM] pxa: allow clk aliases [ARM] Feroceon: don't disable BPU on boot [ARM] Orion: LED support for HP mv2120 [ARM] Orion: add RD88F5181L-FXO support [ARM] Orion: add RD88F5181L-GE support [ARM] Orion: add Netgear WNR854T support [ARM] s3c2410_defconfig: update for current build [ARM] Acer n30: Minor style and indentation fixes. ...
Diffstat (limited to 'arch/arm/mach-loki/addr-map.c')
-rw-r--r--arch/arm/mach-loki/addr-map.c121
1 files changed, 121 insertions, 0 deletions
diff --git a/arch/arm/mach-loki/addr-map.c b/arch/arm/mach-loki/addr-map.c
new file mode 100644
index 0000000..ba25e56
--- /dev/null
+++ b/arch/arm/mach-loki/addr-map.c
@@ -0,0 +1,121 @@
+/*
+ * arch/arm/mach-loki/addr-map.c
+ *
+ * Address map functions for Marvell Loki (88RC8480) SoCs
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/mbus.h>
+#include <asm/hardware.h>
+#include <asm/io.h>
+#include "common.h"
+
+/*
+ * Generic Address Decode Windows bit settings
+ */
+#define TARGET_DDR 0
+#define TARGET_DEV_BUS 1
+#define TARGET_PCIE0 3
+#define TARGET_PCIE1 4
+#define ATTR_DEV_BOOT 0x0f
+#define ATTR_DEV_CS2 0x1b
+#define ATTR_DEV_CS1 0x1d
+#define ATTR_DEV_CS0 0x1e
+#define ATTR_PCIE_IO 0x51
+#define ATTR_PCIE_MEM 0x59
+
+/*
+ * Helpers to get DDR bank info
+ */
+#define DDR_SIZE_CS(n) DDR_REG(0x1500 + ((n) << 3))
+#define DDR_BASE_CS(n) DDR_REG(0x1504 + ((n) << 3))
+
+/*
+ * CPU Address Decode Windows registers
+ */
+#define CPU_WIN_CTRL(n) BRIDGE_REG(0x000 | ((n) << 4))
+#define CPU_WIN_BASE(n) BRIDGE_REG(0x004 | ((n) << 4))
+#define CPU_WIN_REMAP_LO(n) BRIDGE_REG(0x008 | ((n) << 4))
+#define CPU_WIN_REMAP_HI(n) BRIDGE_REG(0x00c | ((n) << 4))
+
+
+struct mbus_dram_target_info loki_mbus_dram_info;
+
+static void __init setup_cpu_win(int win, u32 base, u32 size,
+ u8 target, u8 attr, int remap)
+{
+ u32 ctrl;
+
+ base &= 0xffff0000;
+ ctrl = ((size - 1) & 0xffff0000) | (attr << 8) | (1 << 5) | target;
+
+ writel(base, CPU_WIN_BASE(win));
+ writel(ctrl, CPU_WIN_CTRL(win));
+ if (win < 2) {
+ if (remap < 0)
+ remap = base;
+
+ writel(remap & 0xffff0000, CPU_WIN_REMAP_LO(win));
+ writel(0, CPU_WIN_REMAP_HI(win));
+ }
+}
+
+void __init loki_setup_cpu_mbus(void)
+{
+ int i;
+ int cs;
+
+ /*
+ * First, disable and clear windows.
+ */
+ for (i = 0; i < 8; i++) {
+ writel(0, CPU_WIN_BASE(i));
+ writel(0, CPU_WIN_CTRL(i));
+ if (i < 2) {
+ writel(0, CPU_WIN_REMAP_LO(i));
+ writel(0, CPU_WIN_REMAP_HI(i));
+ }
+ }
+
+ /*
+ * Setup windows for PCIe IO+MEM space.
+ */
+ setup_cpu_win(2, LOKI_PCIE0_MEM_PHYS_BASE, LOKI_PCIE0_MEM_SIZE,
+ TARGET_PCIE0, ATTR_PCIE_MEM, -1);
+ setup_cpu_win(3, LOKI_PCIE1_MEM_PHYS_BASE, LOKI_PCIE1_MEM_SIZE,
+ TARGET_PCIE1, ATTR_PCIE_MEM, -1);
+
+ /*
+ * Setup MBUS dram target info.
+ */
+ loki_mbus_dram_info.mbus_dram_target_id = TARGET_DDR;
+
+ for (i = 0, cs = 0; i < 4; i++) {
+ u32 base = readl(DDR_BASE_CS(i));
+ u32 size = readl(DDR_SIZE_CS(i));
+
+ /*
+ * Chip select enabled?
+ */
+ if (size & 1) {
+ struct mbus_dram_window *w;
+
+ w = &loki_mbus_dram_info.cs[cs++];
+ w->cs_index = i;
+ w->mbus_attr = 0xf & ~(1 << i);
+ w->base = base & 0xffff0000;
+ w->size = (size | 0x0000ffff) + 1;
+ }
+ }
+ loki_mbus_dram_info.num_cs = cs;
+}
+
+void __init loki_setup_dev_boot_win(u32 base, u32 size)
+{
+ setup_cpu_win(4, base, size, TARGET_DEV_BUS, ATTR_DEV_BOOT, -1);
+}