| /* |
| * Common CPM code |
| * |
| * Author: Scott Wood <scottwood@freescale.com> |
| * |
| * Copyright 2007 Freescale Semiconductor, Inc. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of version 2 of the GNU General Public License as |
| * published by the Free Software Foundation. |
| */ |
| |
| #include <linux/init.h> |
| #include <asm/udbg.h> |
| #include <asm/io.h> |
| #include <asm/system.h> |
| #include <mm/mmu_decl.h> |
| |
| #ifdef CONFIG_PPC_EARLY_DEBUG_CPM |
| static u32 __iomem *cpm_udbg_txdesc = |
| (u32 __iomem __force *)CONFIG_PPC_EARLY_DEBUG_CPM_ADDR; |
| |
| static void udbg_putc_cpm(char c) |
| { |
| u8 __iomem *txbuf = (u8 __iomem __force *)in_be32(&cpm_udbg_txdesc[1]); |
| |
| if (c == '\n') |
| udbg_putc('\r'); |
| |
| while (in_be32(&cpm_udbg_txdesc[0]) & 0x80000000) |
| ; |
| |
| out_8(txbuf, c); |
| out_be32(&cpm_udbg_txdesc[0], 0xa0000001); |
| } |
| |
| void __init udbg_init_cpm(void) |
| { |
| if (cpm_udbg_txdesc) { |
| #ifdef CONFIG_CPM2 |
| setbat(1, 0xf0000000, 0xf0000000, 1024*1024, _PAGE_IO); |
| #endif |
| udbg_putc = udbg_putc_cpm; |
| } |
| } |
| #endif |