Index: kernel/arch/arm32/src/mach/gta02/gta02.c =================================================================== --- kernel/arch/arm32/src/mach/gta02/gta02.c (revision 6250c37234323890b9e9a2f06fea02651a75d6c2) +++ kernel/arch/arm32/src/mach/gta02/gta02.c (revision f1fc83a94680102dc08796c15aa408745db97104) @@ -37,8 +37,13 @@ #include #include +#include +#include #define GTA02_MEMORY_START 0x30000000 /* physical */ #define GTA02_MEMORY_SIZE 0x08000000 /* 128 MB */ -#define GTA02_MEMORY_SKIP 0x8000 /* 2 pages */ +#define GTA02_MEMORY_SKIP 0x8000 + +/** GTA02 serial console UART address (UART S3C24XX CPU UART channel 2). */ +#define GTA02_SCONS_BASE 0x50008000 static void gta02_init(void); @@ -50,4 +55,6 @@ static void gta02_output_init(void); static void gta02_input_init(void); + +static void *gta02_scons_out; struct arm_machine_ops gta02_machine_ops = { @@ -64,4 +71,5 @@ static void gta02_init(void) { + gta02_scons_out = (void *) hw_map(GTA02_SCONS_BASE, PAGE_SIZE); } @@ -95,4 +103,9 @@ static void gta02_output_init(void) { + outdev_t *scons_dev; + + scons_dev = s3c24xx_uart_init((ioport8_t *) gta02_scons_out); + if (scons_dev) + stdout_wire(scons_dev); } Index: kernel/arch/arm32/src/mm/page.c =================================================================== --- kernel/arch/arm32/src/mm/page.c (revision 6250c37234323890b9e9a2f06fea02651a75d6c2) +++ kernel/arch/arm32/src/mm/page.c (revision f1fc83a94680102dc08796c15aa408745db97104) @@ -68,4 +68,6 @@ #error "Only high exception vector supported now" #endif + cur = ALIGN_DOWN(0x50008010, FRAME_SIZE); + page_mapping_insert(AS_KERNEL, PA2KA(cur), cur, flags); page_table_unlock(AS_KERNEL, true); Index: kernel/genarch/Makefile.inc =================================================================== --- kernel/genarch/Makefile.inc (revision 6250c37234323890b9e9a2f06fea02651a75d6c2) +++ kernel/genarch/Makefile.inc (revision f1fc83a94680102dc08796c15aa408745db97104) @@ -90,4 +90,9 @@ endif +ifeq ($(CONFIG_S3C24XX_UART),y) + GENARCH_SOURCES += \ + genarch/src/drivers/s3c24xx_uart/s3c24xx_uart.c +endif + ifeq ($(CONFIG_Z8530),y) GENARCH_SOURCES += \ Index: kernel/genarch/include/drivers/s3c24xx_uart/s3c24xx_uart.h =================================================================== --- kernel/genarch/include/drivers/s3c24xx_uart/s3c24xx_uart.h (revision f1fc83a94680102dc08796c15aa408745db97104) +++ kernel/genarch/include/drivers/s3c24xx_uart/s3c24xx_uart.h (revision f1fc83a94680102dc08796c15aa408745db97104) @@ -0,0 +1,48 @@ +/* + * Copyright (c) 2010 Jiri Svoboda + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * - The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** @addtogroup genarch + * @{ + */ +/** + * @file + * @brief Samsung S3C24xx on-chip UART driver. + */ + +#ifndef KERN_S3C24XX_UART_H_ +#define KERN_S3C24XX_UART_H_ + +#include +#include + +extern outdev_t *s3c24xx_uart_init(ioport8_t *); + +#endif + +/** @} + */ Index: kernel/genarch/src/drivers/s3c24xx_uart/s3c24xx_uart.c =================================================================== --- kernel/genarch/src/drivers/s3c24xx_uart/s3c24xx_uart.c (revision f1fc83a94680102dc08796c15aa408745db97104) +++ kernel/genarch/src/drivers/s3c24xx_uart/s3c24xx_uart.c (revision f1fc83a94680102dc08796c15aa408745db97104) @@ -0,0 +1,127 @@ +/* + * Copyright (c) 2009 Martin Decky + * Copyright (c) 2010 Jiri Svoboda + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * - The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** @addtogroup genarch + * @{ + */ +/** + * @file + * @brief Samsung S3C24xx on-chip UART driver. + * + * This UART is present on the Samsung S3C24xx CPU (on the gta02 platform). + */ + +#include +#include +#include +#include +#include +#include +#include + +/** S3C24xx UART register offsets */ +#define S3C24XX_UTRSTAT 0x10 +#define S3C24XX_UTXH 0x20 + +/* Bits in UTXH register */ +#define S3C24XX_UTXH_TX_EMPTY 0x4 + +typedef struct { + ioport8_t *base; +} s3c24xx_uart_instance_t; + +static void s3c24xx_uart_sendb(outdev_t *dev, uint8_t byte) +{ + s3c24xx_uart_instance_t *instance = + (s3c24xx_uart_instance_t *) dev->data; + ioport32_t *utrstat, *utxh; + + utrstat = (ioport32_t *) (instance->base + S3C24XX_UTRSTAT); + utxh = (ioport32_t *) (instance->base + S3C24XX_UTXH); + + /* Wait for transmitter to be empty. */ + while ((pio_read_32(utrstat) & S3C24XX_UTXH_TX_EMPTY) == 0) + ; + + pio_write_32(utxh, byte); +} + +static void s3c24xx_uart_putchar(outdev_t *dev, wchar_t ch, bool silent) +{ + if (!silent) { + if (!ascii_check(ch)) { + s3c24xx_uart_sendb(dev, U_SPECIAL); + } else { + if (ch == '\n') + s3c24xx_uart_sendb(dev, (uint8_t) '\r'); + s3c24xx_uart_sendb(dev, (uint8_t) ch); + } + } +} + +static outdev_operations_t s3c24xx_uart_ops = { + .write = s3c24xx_uart_putchar, + .redraw = NULL +}; + +outdev_t *s3c24xx_uart_init(ioport8_t *base) +{ + outdev_t *uart_dev = malloc(sizeof(outdev_t), FRAME_ATOMIC); + if (!uart_dev) + return NULL; + + s3c24xx_uart_instance_t *instance = + malloc(sizeof(s3c24xx_uart_instance_t), FRAME_ATOMIC); + if (!instance) { + free(uart_dev); + return NULL; + } + + outdev_initialize("s3c24xx_uart_dev", uart_dev, &s3c24xx_uart_ops); + uart_dev->data = instance; + + instance->base = base; + + if (!fb_exported) { + /* + * This is the necessary evil until the userspace driver is entirely + * self-sufficient. + */ + sysinfo_set_item_val("fb", NULL, true); + sysinfo_set_item_val("fb.kind", NULL, 3); + sysinfo_set_item_val("fb.address.physical", NULL, KA2PA(base)); + + fb_exported = true; + } + + return uart_dev; +} + +/** @} + */