diff options
Diffstat (limited to 'arch/arm/plat-omap/include/mach/uncompress.h')
| -rw-r--r-- | arch/arm/plat-omap/include/mach/uncompress.h | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/arch/arm/plat-omap/include/mach/uncompress.h b/arch/arm/plat-omap/include/mach/uncompress.h new file mode 100644 index 00000000000..0814c5f210c --- /dev/null +++ b/arch/arm/plat-omap/include/mach/uncompress.h @@ -0,0 +1,83 @@ +/* + * arch/arm/plat-omap/include/mach/uncompress.h + * + * Serial port stubs for kernel decompress status messages + * + * Initially based on: + * linux-2.4.15-rmk1-dsplinux1.6/arch/arm/plat-omap/include/mach1510/uncompress.h + * Copyright (C) 2000 RidgeRun, Inc. + * Author: Greg Lonnon <glonnon@ridgerun.com> + * + * Rewritten by: + * Author: <source@mvista.com> + * 2004 (c) MontaVista Software, Inc. + * + * This file is licensed under the terms of the GNU General Public License + * version 2. This program is licensed "as is" without any warranty of any + * kind, whether express or implied. + */ + +#include <linux/types.h> +#include <linux/serial_reg.h> +#include <mach/serial.h> + +unsigned int system_rev; + +#define UART_OMAP_MDR1 0x08 /* mode definition register */ +#define OMAP_ID_730 0x355F +#define ID_MASK 0x7fff +#define check_port(base, shift) ((base[UART_OMAP_MDR1 << shift] & 7) == 0) +#define omap_get_id() ((*(volatile unsigned int *)(0xfffed404)) >> 12) & ID_MASK + +static void putc(int c) +{ + volatile u8 * uart = 0; + int shift = 2; + +#ifdef CONFIG_MACH_OMAP_PALMTE + return; +#endif + +#ifdef CONFIG_ARCH_OMAP +#ifdef CONFIG_OMAP_LL_DEBUG_UART3 + uart = (volatile u8 *)(OMAP_UART3_BASE); +#elif defined(CONFIG_OMAP_LL_DEBUG_UART2) + uart = (volatile u8 *)(OMAP_UART2_BASE); +#else + uart = (volatile u8 *)(OMAP_UART1_BASE); +#endif + +#ifdef CONFIG_ARCH_OMAP1 + /* Determine which serial port to use */ + do { + /* MMU is not on, so cpu_is_omapXXXX() won't work here */ + unsigned int omap_id = omap_get_id(); + + if (omap_id == OMAP_ID_730) + shift = 0; + + if (check_port(uart, shift)) + break; + /* Silent boot if no serial ports are enabled. */ + return; + } while (0); +#endif /* CONFIG_ARCH_OMAP1 */ +#endif + + /* + * Now, xmit each character + */ + while (!(uart[UART_LSR << shift] & UART_LSR_THRE)) + barrier(); + uart[UART_TX << shift] = c; +} + +static inline void flush(void) +{ +} + +/* + * nothing to do + */ +#define arch_decomp_setup() +#define arch_decomp_wdog() |