diff options
4 files changed, 64 insertions, 42 deletions
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 17cb740b3..10dc09da4 100644 --- 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 ea170edc6..c61e20a6c 100644 --- 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 4db430382..7176be302 100644 --- 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 b6079517d..959c5cfe4 100644 --- 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); } |