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authorMartin Michlmayr <tbm@cyrius.com>2009-11-05 20:27:46 +0000
committerNicolas Pitre <nico@fluxnic.net>2009-11-13 12:14:24 -0500
commit8d27b2f7988b652dbabf79291a3e2550c06e1af5 (patch)
tree595ded246acfaf068b3426253bc09864a952e2b8 /arch/arm/mach-kirkwood/tsx1x-common.c
parent287989cac25ad71002153d55875584210adf78bd (diff)
[ARM] Kirkwood: Remove code duplication in QNAP setup files
Remove the code duplication found in the setup files of TS-219 and TS-41x. Signed-off-by: Martin Michlmayr <tbm@cyrius.com> Signed-off-by: Nicolas Pitre <nico@marvell.com>
Diffstat (limited to 'arch/arm/mach-kirkwood/tsx1x-common.c')
-rw-r--r--arch/arm/mach-kirkwood/tsx1x-common.c113
1 files changed, 113 insertions, 0 deletions
diff --git a/arch/arm/mach-kirkwood/tsx1x-common.c b/arch/arm/mach-kirkwood/tsx1x-common.c
new file mode 100644
index 00000000000..7221c20b2af
--- /dev/null
+++ b/arch/arm/mach-kirkwood/tsx1x-common.c
@@ -0,0 +1,113 @@
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/physmap.h>
+#include <linux/spi/flash.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/orion_spi.h>
+#include <linux/serial_reg.h>
+#include <mach/kirkwood.h>
+#include "common.h"
+
+/*
+ * QNAP TS-x1x Boards flash
+ */
+
+/****************************************************************************
+ * 16 MiB NOR flash. The struct mtd_partition is not in the same order as the
+ * partitions on the device because we want to keep compatability with
+ * the QNAP firmware.
+ * Layout as used by QNAP:
+ * 0x00000000-0x00080000 : "U-Boot"
+ * 0x00200000-0x00400000 : "Kernel"
+ * 0x00400000-0x00d00000 : "RootFS"
+ * 0x00d00000-0x01000000 : "RootFS2"
+ * 0x00080000-0x000c0000 : "U-Boot Config"
+ * 0x000c0000-0x00200000 : "NAS Config"
+ *
+ * We'll use "RootFS1" instead of "RootFS" to stay compatible with the layout
+ * used by the QNAP TS-109/TS-209.
+ *
+ ***************************************************************************/
+
+struct mtd_partition qnap_tsx1x_partitions[] = {
+ {
+ .name = "U-Boot",
+ .size = 0x00080000,
+ .offset = 0,
+ .mask_flags = MTD_WRITEABLE,
+ }, {
+ .name = "Kernel",
+ .size = 0x00200000,
+ .offset = 0x00200000,
+ }, {
+ .name = "RootFS1",
+ .size = 0x00900000,
+ .offset = 0x00400000,
+ }, {
+ .name = "RootFS2",
+ .size = 0x00300000,
+ .offset = 0x00d00000,
+ }, {
+ .name = "U-Boot Config",
+ .size = 0x00040000,
+ .offset = 0x00080000,
+ }, {
+ .name = "NAS Config",
+ .size = 0x00140000,
+ .offset = 0x000c0000,
+ },
+};
+
+const struct flash_platform_data qnap_tsx1x_flash = {
+ .type = "m25p128",
+ .name = "spi_flash",
+ .parts = qnap_tsx1x_partitions,
+ .nr_parts = ARRAY_SIZE(qnap_tsx1x_partitions),
+};
+
+struct spi_board_info __initdata qnap_tsx1x_spi_slave_info[] = {
+ {
+ .modalias = "m25p80",
+ .platform_data = &qnap_tsx1x_flash,
+ .irq = -1,
+ .max_speed_hz = 20000000,
+ .bus_num = 0,
+ .chip_select = 0,
+ },
+};
+
+void qnap_tsx1x_register_flash(void)
+{
+ spi_register_board_info(qnap_tsx1x_spi_slave_info,
+ ARRAY_SIZE(qnap_tsx1x_spi_slave_info));
+ kirkwood_spi_init();
+}
+
+
+/*****************************************************************************
+ * QNAP TS-x1x specific power off method via UART1-attached PIC
+ ****************************************************************************/
+
+#define UART1_REG(x) (UART1_VIRT_BASE + ((UART_##x) << 2))
+
+void qnap_tsx1x_power_off(void)
+{
+ /* 19200 baud divisor */
+ const unsigned divisor = ((kirkwood_tclk + (8 * 19200)) / (16 * 19200));
+
+ pr_info("%s: triggering power-off...\n", __func__);
+
+ /* hijack UART1 and reset into sane state (19200,8n1) */
+ writel(0x83, UART1_REG(LCR));
+ writel(divisor & 0xff, UART1_REG(DLL));
+ writel((divisor >> 8) & 0xff, UART1_REG(DLM));
+ writel(0x03, UART1_REG(LCR));
+ writel(0x00, UART1_REG(IER));
+ writel(0x00, UART1_REG(FCR));
+ writel(0x00, UART1_REG(MCR));
+
+ /* send the power-off command 'A' to PIC */
+ writel('A', UART1_REG(TX));
+}
+