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-rw-r--r--arch/arm/mach-w90x900/cpu.c1
-rw-r--r--arch/arm/mach-w90x900/dev.c2
-rw-r--r--arch/arm/mach-w90x900/include/mach/nuc900_spi.h35
-rw-r--r--arch/arm/mach-w90x900/include/mach/system.h15
-rw-r--r--arch/arm/mach-w90x900/include/mach/uncompress.h10
-rw-r--r--arch/arm/mach-w90x900/time.c64
6 files changed, 98 insertions, 29 deletions
diff --git a/arch/arm/mach-w90x900/cpu.c b/arch/arm/mach-w90x900/cpu.c
index 921cef991bf0..20dc0c96214d 100644
--- a/arch/arm/mach-w90x900/cpu.c
+++ b/arch/arm/mach-w90x900/cpu.c
@@ -96,6 +96,7 @@ static struct clk_lookup nuc900_clkregs[] = {
struct plat_serial8250_port nuc900_uart_data[] = {
NUC900_8250PORT(UART0),
+ {},
};
struct platform_device nuc900_serial_device = {
diff --git a/arch/arm/mach-w90x900/dev.c b/arch/arm/mach-w90x900/dev.c
index 51f17b753348..ec711f4b4019 100644
--- a/arch/arm/mach-w90x900/dev.c
+++ b/arch/arm/mach-w90x900/dev.c
@@ -197,7 +197,7 @@ static struct platform_device nuc900_device_emc = {
/* SPI device */
-static struct w90p910_spi_info nuc900_spiflash_data = {
+static struct nuc900_spi_info nuc900_spiflash_data = {
.num_cs = 1,
.lsb = 0,
.txneg = 1,
diff --git a/arch/arm/mach-w90x900/include/mach/nuc900_spi.h b/arch/arm/mach-w90x900/include/mach/nuc900_spi.h
new file mode 100644
index 000000000000..bd94819e314f
--- /dev/null
+++ b/arch/arm/mach-w90x900/include/mach/nuc900_spi.h
@@ -0,0 +1,35 @@
+/*
+ * arch/arm/mach-w90x900/include/mach/nuc900_spi.h
+ *
+ * Copyright (c) 2009 Nuvoton technology corporation.
+ *
+ * Wan ZongShun <mcuos.com@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation;version 2 of the License.
+ *
+ */
+
+#ifndef __ASM_ARCH_SPI_H
+#define __ASM_ARCH_SPI_H
+
+extern void mfp_set_groupg(struct device *dev);
+
+struct nuc900_spi_info {
+ unsigned int num_cs;
+ unsigned int lsb;
+ unsigned int txneg;
+ unsigned int rxneg;
+ unsigned int divider;
+ unsigned int sleep;
+ unsigned int txnum;
+ unsigned int txbitlen;
+ int bus_num;
+};
+
+struct nuc900_spi_chip {
+ unsigned char bits_per_word;
+};
+
+#endif /* __ASM_ARCH_SPI_H */
diff --git a/arch/arm/mach-w90x900/include/mach/system.h b/arch/arm/mach-w90x900/include/mach/system.h
index 940640066857..ce228bdc66dd 100644
--- a/arch/arm/mach-w90x900/include/mach/system.h
+++ b/arch/arm/mach-w90x900/include/mach/system.h
@@ -15,7 +15,15 @@
*
*/
+#include <linux/io.h>
#include <asm/proc-fns.h>
+#include <mach/map.h>
+#include <mach/regs-timer.h>
+
+#define WTCR (TMR_BA + 0x1C)
+#define WTCLK (1 << 10)
+#define WTE (1 << 7)
+#define WTRE (1 << 1)
static void arch_idle(void)
{
@@ -23,6 +31,11 @@ static void arch_idle(void)
static void arch_reset(char mode, const char *cmd)
{
- cpu_reset(0);
+ if (mode == 's') {
+ /* Jump into ROM at address 0 */
+ cpu_reset(0);
+ } else {
+ __raw_writel(WTE | WTRE | WTCLK, WTCR);
+ }
}
diff --git a/arch/arm/mach-w90x900/include/mach/uncompress.h b/arch/arm/mach-w90x900/include/mach/uncompress.h
index 050d9fe5ae1b..56f1a74d7016 100644
--- a/arch/arm/mach-w90x900/include/mach/uncompress.h
+++ b/arch/arm/mach-w90x900/include/mach/uncompress.h
@@ -22,11 +22,21 @@
#include <mach/regs-serial.h>
#include <mach/map.h>
+#include <linux/serial_reg.h>
#define arch_decomp_wdog()
+#define TX_DONE (UART_LSR_TEMT | UART_LSR_THRE)
+static volatile u32 * uart_base = (u32 *)UART0_PA;
+
static void putc(int ch)
{
+ /* Check THRE and TEMT bits before we transmit the character.
+ */
+ while ((uart_base[UART_LSR] & TX_DONE) != TX_DONE)
+ barrier();
+
+ *uart_base = ch;
}
static inline void flush(void)
diff --git a/arch/arm/mach-w90x900/time.c b/arch/arm/mach-w90x900/time.c
index 4128af870b41..b80f769bc135 100644
--- a/arch/arm/mach-w90x900/time.c
+++ b/arch/arm/mach-w90x900/time.c
@@ -42,7 +42,10 @@
#define TICKS_PER_SEC 100
#define PRESCALE 0x63 /* Divider = prescale + 1 */
-unsigned int timer0_load;
+#define TDR_SHIFT 24
+#define TDR_MASK ((1 << TDR_SHIFT) - 1)
+
+static unsigned int timer0_load;
static void nuc900_clockevent_setmode(enum clock_event_mode mode,
struct clock_event_device *clk)
@@ -88,7 +91,7 @@ static int nuc900_clockevent_setnextevent(unsigned long evt,
static struct clock_event_device nuc900_clockevent_device = {
.name = "nuc900-timer0",
.shift = 32,
- .features = CLOCK_EVT_MODE_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
+ .features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
.set_mode = nuc900_clockevent_setmode,
.set_next_event = nuc900_clockevent_setnextevent,
.rating = 300,
@@ -112,8 +115,23 @@ static struct irqaction nuc900_timer0_irq = {
.handler = nuc900_timer0_interrupt,
};
-static void __init nuc900_clockevents_init(unsigned int rate)
+static void __init nuc900_clockevents_init(void)
{
+ unsigned int rate;
+ struct clk *clk = clk_get(NULL, "timer0");
+
+ BUG_ON(IS_ERR(clk));
+
+ __raw_writel(0x00, REG_TCSR0);
+
+ clk_enable(clk);
+ rate = clk_get_rate(clk) / (PRESCALE + 1);
+
+ timer0_load = (rate / TICKS_PER_SEC);
+
+ __raw_writel(RESETINT, REG_TISR);
+ setup_irq(IRQ_TIMER0, &nuc900_timer0_irq);
+
nuc900_clockevent_device.mult = div_sc(rate, NSEC_PER_SEC,
nuc900_clockevent_device.shift);
nuc900_clockevent_device.max_delta_ns = clockevent_delta2ns(0xffffffff,
@@ -127,26 +145,35 @@ static void __init nuc900_clockevents_init(unsigned int rate)
static cycle_t nuc900_get_cycles(struct clocksource *cs)
{
- return ~__raw_readl(REG_TDR1);
+ return (~__raw_readl(REG_TDR1)) & TDR_MASK;
}
static struct clocksource clocksource_nuc900 = {
.name = "nuc900-timer1",
.rating = 200,
.read = nuc900_get_cycles,
- .mask = CLOCKSOURCE_MASK(32),
- .shift = 20,
+ .mask = CLOCKSOURCE_MASK(TDR_SHIFT),
+ .shift = 10,
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
};
-static void __init nuc900_clocksource_init(unsigned int rate)
+static void __init nuc900_clocksource_init(void)
{
unsigned int val;
+ unsigned int rate;
+ struct clk *clk = clk_get(NULL, "timer1");
+
+ BUG_ON(IS_ERR(clk));
+
+ __raw_writel(0x00, REG_TCSR1);
+
+ clk_enable(clk);
+ rate = clk_get_rate(clk) / (PRESCALE + 1);
__raw_writel(0xffffffff, REG_TICR1);
val = __raw_readl(REG_TCSR1);
- val |= (COUNTEN | PERIOD);
+ val |= (COUNTEN | PERIOD | PRESCALE);
__raw_writel(val, REG_TCSR1);
clocksource_nuc900.mult =
@@ -156,25 +183,8 @@ static void __init nuc900_clocksource_init(unsigned int rate)
static void __init nuc900_timer_init(void)
{
- struct clk *ck_ext = clk_get(NULL, "ext");
- unsigned int rate;
-
- BUG_ON(IS_ERR(ck_ext));
-
- rate = clk_get_rate(ck_ext);
- clk_put(ck_ext);
- rate = rate / (PRESCALE + 0x01);
-
- /* set a known state */
- __raw_writel(0x00, REG_TCSR0);
- __raw_writel(0x00, REG_TCSR1);
- __raw_writel(RESETINT, REG_TISR);
- timer0_load = (rate / TICKS_PER_SEC);
-
- setup_irq(IRQ_TIMER0, &nuc900_timer0_irq);
-
- nuc900_clocksource_init(rate);
- nuc900_clockevents_init(rate);
+ nuc900_clocksource_init();
+ nuc900_clockevents_init();
}
struct sys_timer nuc900_timer = {
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.