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[adm8668] implement early_printk without an early_console

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Signed-off-by: Florian Fainelli <florian@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@34547 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
florian
2012-12-06 22:39:33 +00:00
parent 679ccdc3c3
commit dd2f766913
5 changed files with 24 additions and 44 deletions
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2
target/linux/adm8668/files/arch/mips/adm8668/Makefile
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@@ -3,5 +3,5 @@
#
obj-y := irq.o pci.o prom.o platform.o serial.o proc.o \
setup.o time.o \
setup.o time.o early_printk.o \
net_core.o net_intr.o

16
target/linux/adm8668/files/arch/mips/adm8668/early_printk.c Normal file
View File

@@ -0,0 +1,16 @@
#include <linux/io.h>
#include <linux/serial_core.h>
#include <adm8668.h>
#define UART_READ(r) \
__raw_readl((void __iomem *)(KSEG1ADDR(ADM8668_UART0_BASE) + (r)))
#define UART_WRITE(v, r) \
__raw_writel((v), (void __iomem *)(KSEG1ADDR(ADM8668_UART0_BASE) + (r)))
void prom_putchar(char c)
{
UART_WRITE(c, UART_DR_REG);
while ((UART_READ(UART_FR_REG) & UART_TX_FIFO_FULL) != 0)
;
}

42
target/linux/adm8668/files/arch/mips/adm8668/prom.c
View File

@@ -25,44 +25,6 @@
register volatile struct global_data *gd asm ("k0");
#ifdef CONFIG_SERIAL_ADM8668_CONSOLE
static inline unsigned int adm_uart_readl(unsigned int offset)
{
return (*(volatile unsigned int *)(0xbe400000 + offset));
}
static inline void adm_uart_writel(unsigned int value, unsigned int offset)
{
(*((volatile unsigned int *)(0xbe400000 + offset))) = value;
}
static void prom_putchar(char c)
{
adm_uart_writel(c, UART_DR_REG);
while ((adm_uart_readl(UART_FR_REG) & UART_TX_FIFO_FULL) != 0)
;
}
static void __init
early_console_write(struct console *con, const char *s, unsigned n)
{
while (n-- && *s) {
if (*s == '\n')
prom_putchar('\r');
prom_putchar(*s);
s++;
}
}
static struct console early_console __initdata = {
.name = "early",
.write = early_console_write,
.flags = CON_BOOT,
.index = -1
};
#endif
void __init prom_free_prom_memory(void)
{
/* No prom memory to free */
@@ -122,10 +84,6 @@ void __init prom_init(void)
bd_t *bd = gd->bd;
int memsize;
#ifdef CONFIG_SERIAL_ADM8668_CONSOLE
register_console(&early_console);
#endif
memsize = bd->bi_memsize;
printk("Board info:\n");
printk(" RAM size: %d MB\n", (int)memsize/(1024*1024));