diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-arm/arch-omap/uncompress.h |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'include/asm-arm/arch-omap/uncompress.h')
-rw-r--r-- | include/asm-arm/arch-omap/uncompress.h | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/include/asm-arm/arch-omap/uncompress.h b/include/asm-arm/arch-omap/uncompress.h new file mode 100644 index 000000000000..3e640aba8c20 --- /dev/null +++ b/include/asm-arm/arch-omap/uncompress.h @@ -0,0 +1,82 @@ +/* + * linux/include/asm-arm/arch-omap/uncompress.h + * + * Serial port stubs for kernel decompress status messages + * + * Initially based on: + * linux-2.4.15-rmk1-dsplinux1.6/include/asm-arm/arch-omap1510/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/config.h> +#include <linux/types.h> +#include <linux/serial_reg.h> +#include <asm/arch/hardware.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 +putstr(const char *s) +{ + volatile u8 * uart = 0; + int shift; + +#ifdef CONFIG_OMAP_LL_DEBUG_UART3 + uart = (volatile u8 *)(OMAP_UART3_BASE); +#elif CONFIG_OMAP_LL_DEBUG_UART2 + uart = (volatile u8 *)(OMAP_UART2_BASE); +#else + uart = (volatile u8 *)(OMAP_UART1_BASE); +#endif + + /* 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; + else + shift = 2; + + if (check_port(uart, shift)) + break; + /* Silent boot if no serial ports are enabled. */ + return; + } while (0); + + /* + * Now, xmit each character + */ + while (*s) { + while (!(uart[UART_LSR << shift] & UART_LSR_THRE)) + barrier(); + uart[UART_TX << shift] = *s; + if (*s++ == '\n') { + while (!(uart[UART_LSR << shift] & UART_LSR_THRE)) + barrier(); + uart[UART_TX << shift] = '\r'; + } + } +} + +/* + * nothing to do + */ +#define arch_decomp_setup() +#define arch_decomp_wdog() |