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Code

ar7 misc fixes:

Browse Source 
- serial
 - memory probing


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@6635 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
ejka 2007-03-22 16:39:07 +00:00
parent 7d21d53292
commit 6e38bb0457
4 changed files with 64 additions and 42 deletions
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42
target/linux/ar7-2.6/files/arch/mips/ar7/memory.c
View File

@ -38,33 +38,26 @@
#include <asm/mips-boards/prom.h>
#warning FIXME: use sdram control regs and/or autodetection
static int __init memsize(void)
{
char *memsize_str;
unsigned int result;
char cmdline[CL_SIZE], *ptr;
u32 size = (64 << 20);
volatile u32 *addr = (u32 *)KSEG1ADDR(0x14000000 + size - 4);
u32 *kernel_end = (u32 *)KSEG1ADDR(CPHYSADDR((u32)&_end));
/* Check the command line first for a memsize directive */
strcpy(cmdline, arcs_cmdline);
ptr = strstr(cmdline, "memsize=");
if (ptr && (ptr != cmdline) && (*(ptr - 1) != ' '))
ptr = strstr(ptr, " memsize=");
if (ptr) {
result = memparse(ptr + 8, &ptr);
} else {
/* otherwise look in the environment */
memsize_str = prom_getenv("memsize");
if (!memsize_str) {
prom_printf("memsize not set in boot prom, set to default (8Mb)\n");
result = 0x00800000;
} else {
result = simple_strtol(memsize_str, NULL, 0);
}
while (addr > kernel_end) {
*addr = (u32)addr;
size >>= 1;
addr -= size >> 2;
}
return result;
do {
addr += size >> 2;
if (*addr != (u32)addr)
break;
size <<= 1;
} while (size < (64 << 20));
return size;
}
#ifdef CONFIG_NEED_MULTIPLE_NODES
@ -167,9 +160,10 @@ void __init mem_init(void)
void __init prom_meminit(void)
{
unsigned long pages;
#ifdef CONFIG_NEED_MULTIPLE_NODES
unsigned long kernel_start, kernel_end;
unsigned long pages, free_pages;
unsigned long free_pages;
unsigned long bootmap_size;
#endif
@ -196,7 +190,5 @@ void __init prom_meminit(void)
unsigned long __init prom_free_prom_memory(void)
{
/* return freed;
*/
return 0;
}

4
target/linux/ar7-2.6/files/arch/mips/ar7/platform.c
View File

@ -321,7 +321,7 @@ static int __init ar7_register_devices(void)
memset(uart_port, 0, sizeof(struct uart_port) * 2);
uart_port[0].type = PORT_16750;
uart_port[0].type = PORT_AR7;
uart_port[0].line = 0;
uart_port[0].irq = AR7_IRQ_UART0;
uart_port[0].uartclk = ar7_bus_freq() / 2;
@ -333,7 +333,7 @@ static int __init ar7_register_devices(void)
if (res)
return res;
uart_port[1].type = PORT_16750;
uart_port[1].type = PORT_AR7;
uart_port[1].line = 1;
uart_port[1].irq = AR7_IRQ_UART1;
uart_port[1].uartclk = ar7_bus_freq() / 2;

2
target/linux/ar7-2.6/files/arch/mips/ar7/prom.c
View File

@ -258,7 +258,7 @@ char prom_getchar(void)
int prom_putchar(char c)
{
while ((serial_in(UART_LSR) & UART_LSR_THRE) == 0);
while ((serial_in(UART_LSR) & UART_LSR_TEMT) == 0);
serial_out(UART_TX, c);
return 1;
}

58
target/linux/ar7-2.6/patches/500-serial_kludge.patch
View File

@ -1,22 +1,52 @@
diff -Nru linux-2.6.19.2/drivers/serial/8250.c linux-ar7/drivers/serial/8250.c
--- linux-2.6.19.2/drivers/serial/8250.c 2006-12-12 02:32:53.000000000 +0700
+++ linux-ar7/drivers/serial/8250.c 2007-02-02 14:25:51.000000000 +0700
@@ -2171,6 +2171,9 @@
*/
up->mcr_mask = ~ALPHA_KLUDGE_MCR;
up->mcr_force = ALPHA_KLUDGE_MCR;
+#ifdef CONFIG_AR7
+ up->mcr_force |= UART_MCR_RTS;
+#endif
diff -Nru linux-2.6.19.2/include/linux/serialP.h linux-ar7/include/linux/serialP.h
--- linux-2.6.19.2/include/linux/serialP.h 2007-01-17 01:24:01.000000000 +0700
+++ linux-ar7/include/linux/serialP.h 2007-03-22 22:36:48.000000000 +0700
@@ -135,6 +135,9 @@
* the interrupt line _up_ instead of down, so if we register the IRQ
* while the UART is in that state, we die in an IRQ storm. */
#define ALPHA_KLUDGE_MCR (UART_MCR_OUT2)
+#elif defined(CONFIG_AR7)
+/* This is how it is set up by bootloader... */
+#define ALPHA_KLUDGE_MCR (UART_MCR_OUT2 | UART_MCR_OUT1 | UART_MCR_RTS | UART_MCR_DTR)
#else
#define ALPHA_KLUDGE_MCR 0
#endif
diff -Nru linux-2.6.19.2/include/linux/serial_core.h linux-ar7/include/linux/serial_core.h
--- linux-2.6.19.2/include/linux/serial_core.h 2007-01-11 02:10:37.000000000 +0700
+++ linux-ar7/include/linux/serial_core.h 2007-03-22 22:50:13.000000000 +0700
@@ -39,7 +39,8 @@
#define PORT_RSA 13
#define PORT_NS16550A 14
#define PORT_XSCALE 15
-#define PORT_MAX_8250 15 /* max port ID */
+#define PORT_AR7 16
+#define PORT_MAX_8250 16 /* max port ID */
up->port.ops = &serial8250_pops;
}
@@ -2243,7 +2246,7 @@
/*
* ARM specific type numbers. These are not currently guaranteed
diff -Nru linux-2.6.19.2/drivers/serial/8250.c linux-ar7/drivers/serial/8250.c
--- linux-2.6.19.2/drivers/serial/8250.c 2007-01-11 02:10:37.000000000 +0700
+++ linux-ar7/drivers/serial/8250.c 2007-03-22 22:45:17.000000000 +0700
@@ -251,6 +251,13 @@
.fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10,
.flags = UART_CAP_FIFO | UART_CAP_UUE,
},
+ [PORT_AR7] = {
+ .name = "TI-AR7",
+ .fifo_size = 16,
+ .tx_loadsz = 16,
+ .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_00,
+ .flags = UART_CAP_FIFO | UART_CAP_AFE,
+ },
};
#ifdef CONFIG_SERIAL_8250_AU1X00
@@ -2243,7 +2250,7 @@
{
struct uart_8250_port *up = (struct uart_8250_port *)port;
- wait_for_xmitr(up, UART_LSR_THRE);
+ wait_for_xmitr(up, UART_LSR_TEMT);
+ wait_for_xmitr(up, BOTH_EMPTY);
serial_out(up, UART_TX, ch);
}