ar7 misc fixes: - serial - memory probing

SVN-Revision: 6635

diff --git a/target/linux/ar7-2.6/files/arch/mips/ar7/memory.c b/target/linux/ar7-2.6/files/arch/mips/ar7/memory.c
index 17cb740b3f0063d661544b5e288e337ef0d58d29..10dc09da426f9620b83c42a4d21fd61d805fce1a 100644 (file)
--- a/target/linux/ar7-2.6/files/arch/mips/ar7/memory.c
+++ b/target/linux/ar7-2.6/files/arch/mips/ar7/memory.c
@@ -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;
-
-       /* 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);
-               }
+       u32 size = (64 << 20);
+       volatile u32 *addr = (u32 *)KSEG1ADDR(0x14000000 + size - 4);
+       u32 *kernel_end = (u32 *)KSEG1ADDR(CPHYSADDR((u32)&_end));
+
+       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;
 }

diff --git a/target/linux/ar7-2.6/files/arch/mips/ar7/platform.c b/target/linux/ar7-2.6/files/arch/mips/ar7/platform.c
index ea170edc6af4f0ac327d78b527145655d1736b5b..c61e20a6c156dbea43e20b5e4de683cd7e2a42dd 100644 (file)
--- a/target/linux/ar7-2.6/files/arch/mips/ar7/platform.c
+++ b/target/linux/ar7-2.6/files/arch/mips/ar7/platform.c
@@ -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;

diff --git a/target/linux/ar7-2.6/files/arch/mips/ar7/prom.c b/target/linux/ar7-2.6/files/arch/mips/ar7/prom.c
index 4db4303822b8542b12081faaf809ad8ed7d12378..7176be30220aab37c3cdb7220d9b0ef70a78297e 100644 (file)
--- a/target/linux/ar7-2.6/files/arch/mips/ar7/prom.c
+++ b/target/linux/ar7-2.6/files/arch/mips/ar7/prom.c
@@ -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;
 }

diff --git a/target/linux/ar7-2.6/patches/500-serial_kludge.patch b/target/linux/ar7-2.6/patches/500-serial_kludge.patch
index b6079517d87954bd170c3194ac549c7422be0213..959c5cfe4c9d2fa8e51ef55a77bca25869da4dbd 100644 (file)
--- a/target/linux/ar7-2.6/patches/500-serial_kludge.patch
+++ b/target/linux/ar7-2.6/patches/500-serial_kludge.patch
@@ -1,22 +1,52 @@
+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 */
+ 
+ /*
+  * 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       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
+--- 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,
++      },
+ };
  
-               up->port.ops = &serial8250_pops;
-       }
-@@ -2243,7 +2246,7 @@
+ #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);
  }