diff options
Diffstat (limited to 'kernel/arch/arm/mach-davinci/include/mach/uncompress.h')
| -rw-r--r-- | kernel/arch/arm/mach-davinci/include/mach/uncompress.h | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/kernel/arch/arm/mach-davinci/include/mach/uncompress.h b/kernel/arch/arm/mach-davinci/include/mach/uncompress.h new file mode 100644 index 000000000..8fb97b93b --- /dev/null +++ b/kernel/arch/arm/mach-davinci/include/mach/uncompress.h @@ -0,0 +1,97 @@ +/* + * Serial port stubs for kernel decompress status messages + * + * Initially based on: + * arch/arm/plat-omap/include/mach/uncompress.h + * + * Original copyrights follow. + * + * 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 <asm/mach-types.h> + +#include <mach/serial.h> + +#define IOMEM(x) ((void __force __iomem *)(x)) + +u32 *uart; + +/* PORT_16C550A, in polled non-fifo mode */ +static void putc(char c) +{ + if (!uart) + return; + + while (!(uart[UART_LSR] & UART_LSR_THRE)) + barrier(); + uart[UART_TX] = c; +} + +static inline void flush(void) +{ + if (!uart) + return; + + while (!(uart[UART_LSR] & UART_LSR_THRE)) + barrier(); +} + +static inline void set_uart_info(u32 phys) +{ + uart = (u32 *)phys; +} + +#define _DEBUG_LL_ENTRY(machine, phys) \ + { \ + if (machine_is_##machine()) { \ + set_uart_info(phys); \ + break; \ + } \ + } + +#define DEBUG_LL_DAVINCI(machine, port) \ + _DEBUG_LL_ENTRY(machine, DAVINCI_UART##port##_BASE) + +#define DEBUG_LL_DA8XX(machine, port) \ + _DEBUG_LL_ENTRY(machine, DA8XX_UART##port##_BASE) + +static inline void __arch_decomp_setup(unsigned long arch_id) +{ + /* + * Initialize the port based on the machine ID from the bootloader. + * Note that we're using macros here instead of switch statement + * as machine_is functions are optimized out for the boards that + * are not selected. + */ + do { + /* Davinci boards */ + DEBUG_LL_DAVINCI(davinci_evm, 0); + DEBUG_LL_DAVINCI(sffsdr, 0); + DEBUG_LL_DAVINCI(neuros_osd2, 0); + DEBUG_LL_DAVINCI(davinci_dm355_evm, 0); + DEBUG_LL_DAVINCI(dm355_leopard, 0); + DEBUG_LL_DAVINCI(davinci_dm6467_evm, 0); + DEBUG_LL_DAVINCI(davinci_dm365_evm, 0); + + /* DA8xx boards */ + DEBUG_LL_DA8XX(davinci_da830_evm, 2); + DEBUG_LL_DA8XX(davinci_da850_evm, 2); + DEBUG_LL_DA8XX(mityomapl138, 1); + DEBUG_LL_DA8XX(omapl138_hawkboard, 2); + } while (0); +} + +#define arch_decomp_setup() __arch_decomp_setup(arch_id) |