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Diffstat (limited to 'include/asm-arm/arch-ns9xxx/uncompress.h')
-rw-r--r--include/asm-arm/arch-ns9xxx/uncompress.h143
1 files changed, 136 insertions, 7 deletions
diff --git a/include/asm-arm/arch-ns9xxx/uncompress.h b/include/asm-arm/arch-ns9xxx/uncompress.h
index 961ca7dc995..71066baceab 100644
--- a/include/asm-arm/arch-ns9xxx/uncompress.h
+++ b/include/asm-arm/arch-ns9xxx/uncompress.h
@@ -11,20 +11,149 @@
#ifndef __ASM_ARCH_UNCOMPRESS_H
#define __ASM_ARCH_UNCOMPRESS_H
-static void putc(char c)
+#include <asm/io.h>
+
+#define __REG(x) ((void __iomem __force *)(x))
+
+static void putc_dummy(char c, void __iomem *base)
{
- volatile u8 *base = (volatile u8 *)0x40000000;
- int t = 0x10000;
+ /* nothing */
+}
+static void putc_ns9360(char c, void __iomem *base)
+{
+ static int t = 0x10000;
+ do {
+ if (t)
+ --t;
+
+ if (__raw_readl(base + 8) & (1 << 3)) {
+ __raw_writeb(c, base + 16);
+ t = 0x10000;
+ break;
+ }
+ } while (t);
+}
+
+static void putc_a9m9750dev(char c, void __iomem *base)
+{
+ static int t = 0x10000;
+ do {
+ if (t)
+ --t;
+
+ if (__raw_readb(base + 5) & (1 << 5)) {
+ __raw_writeb(c, base);
+ t = 0x10000;
+ break;
+ }
+ } while (t);
+
+}
+
+static void putc_ns921x(char c, void __iomem *base)
+{
+ static int t = 0x10000;
do {
- if (base[5] & 0x20) {
- base[0] = c;
+ if (t)
+ --t;
+
+ if (!(__raw_readl(base) & (1 << 11))) {
+ __raw_writeb(c, base + 0x0028);
+ t = 0x10000;
break;
}
- } while (--t);
+ } while (t);
}
-#define arch_decomp_setup()
+#define MSCS __REG(0xA0900184)
+
+#define NS9360_UARTA __REG(0x90200040)
+#define NS9360_UARTB __REG(0x90200000)
+#define NS9360_UARTC __REG(0x90300000)
+#define NS9360_UARTD __REG(0x90300040)
+
+#define NS9360_UART_ENABLED(base) \
+ (__raw_readl(NS9360_UARTA) & (1 << 31))
+
+#define A9M9750DEV_UARTA __REG(0x40000000)
+
+#define NS921XSYS_CLOCK __REG(0xa090017c)
+#define NS921X_UARTA __REG(0x90010000)
+#define NS921X_UARTB __REG(0x90018000)
+#define NS921X_UARTC __REG(0x90020000)
+#define NS921X_UARTD __REG(0x90028000)
+
+#define NS921X_UART_ENABLED(base) \
+ (__raw_readl((base) + 0x1000) & (1 << 29))
+
+static void autodetect(void (**putc)(char, void __iomem *), void __iomem **base)
+{
+ if (((__raw_readl(MSCS) >> 16) & 0xfe) == 0x00) {
+ /* ns9360 or ns9750 */
+ if (NS9360_UART_ENABLED(NS9360_UARTA)) {
+ *putc = putc_ns9360;
+ *base = NS9360_UARTA;
+ return;
+ } else if (NS9360_UART_ENABLED(NS9360_UARTB)) {
+ *putc = putc_ns9360;
+ *base = NS9360_UARTB;
+ return;
+ } else if (NS9360_UART_ENABLED(NS9360_UARTC)) {
+ *putc = putc_ns9360;
+ *base = NS9360_UARTC;
+ return;
+ } else if (NS9360_UART_ENABLED(NS9360_UARTD)) {
+ *putc = putc_ns9360;
+ *base = NS9360_UARTD;
+ return;
+ } else if (__raw_readl(__REG(0xa09001f4)) == 0xfffff001) {
+ *putc = putc_a9m9750dev;
+ *base = A9M9750DEV_UARTA;
+ return;
+ }
+ } else if (((__raw_readl(MSCS) >> 16) & 0xfe) == 0x02) {
+ /* ns921x */
+ u32 clock = __raw_readl(NS921XSYS_CLOCK);
+
+ if ((clock & (1 << 1)) &&
+ NS921X_UART_ENABLED(NS921X_UARTA)) {
+ *putc = putc_ns921x;
+ *base = NS921X_UARTA;
+ return;
+ } else if ((clock & (1 << 2)) &&
+ NS921X_UART_ENABLED(NS921X_UARTB)) {
+ *putc = putc_ns921x;
+ *base = NS921X_UARTB;
+ return;
+ } else if ((clock & (1 << 3)) &&
+ NS921X_UART_ENABLED(NS921X_UARTC)) {
+ *putc = putc_ns921x;
+ *base = NS921X_UARTC;
+ return;
+ } else if ((clock & (1 << 4)) &&
+ NS921X_UART_ENABLED(NS921X_UARTD)) {
+ *putc = putc_ns921x;
+ *base = NS921X_UARTD;
+ return;
+ }
+ }
+
+ *putc = putc_dummy;
+}
+
+void (*myputc)(char, void __iomem *);
+void __iomem *base;
+
+static void putc(char c)
+{
+ myputc(c, base);
+}
+
+static void arch_decomp_setup(void)
+{
+ autodetect(&myputc, &base);
+}
#define arch_decomp_wdog()
static void flush(void)