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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-02 08:26:39 +07:00
35ddf7c003
Recent DEBUG_LL and uncompress.h changes removed the check_port() as pointed out by Cory Maccarrone <darkstar6262@gmail.com>. This causes some boards to not boot, so add back the MDR1 register check. The MDR1 register tells the mode of omap uart. Based on an earlier patch by Cory Maccarrone <darkstar6262@gmail.com>. Tested-by: Cory Maccarrone <darkstar6262@gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
170 lines
4.3 KiB
C
170 lines
4.3 KiB
C
/*
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* arch/arm/plat-omap/include/mach/uncompress.h
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*
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* Serial port stubs for kernel decompress status messages
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*
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* Initially based on:
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* linux-2.4.15-rmk1-dsplinux1.6/arch/arm/plat-omap/include/mach1510/uncompress.h
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* Copyright (C) 2000 RidgeRun, Inc.
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* Author: Greg Lonnon <glonnon@ridgerun.com>
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*
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* Rewritten by:
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* Author: <source@mvista.com>
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* 2004 (c) MontaVista Software, Inc.
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*
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* This file is licensed under the terms of the GNU General Public License
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* version 2. This program is licensed "as is" without any warranty of any
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* kind, whether express or implied.
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*/
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#include <linux/types.h>
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#include <linux/serial_reg.h>
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#include <asm/memory.h>
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#include <asm/mach-types.h>
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#include <plat/serial.h>
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#define MDR1_MODE_MASK 0x07
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static volatile u8 *uart_base;
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static int uart_shift;
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/*
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* Store the DEBUG_LL uart number into memory.
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* See also debug-macro.S, and serial.c for related code.
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*/
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static void set_omap_uart_info(unsigned char port)
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{
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*(volatile u32 *)OMAP_UART_INFO = port;
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}
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static void putc(int c)
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{
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if (!uart_base)
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return;
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/* Check for UART 16x mode */
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if ((uart_base[UART_OMAP_MDR1 << uart_shift] & MDR1_MODE_MASK) != 0)
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return;
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while (!(uart_base[UART_LSR << uart_shift] & UART_LSR_THRE))
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barrier();
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uart_base[UART_TX << uart_shift] = c;
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}
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static inline void flush(void)
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{
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}
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/*
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* Macros to configure UART1 and debug UART
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*/
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#define _DEBUG_LL_ENTRY(mach, dbg_uart, dbg_shft, dbg_id) \
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if (machine_is_##mach()) { \
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uart_base = (volatile u8 *)(dbg_uart); \
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uart_shift = (dbg_shft); \
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port = (dbg_id); \
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set_omap_uart_info(port); \
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break; \
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}
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#define DEBUG_LL_OMAP7XX(p, mach) \
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_DEBUG_LL_ENTRY(mach, OMAP1_UART##p##_BASE, OMAP7XX_PORT_SHIFT, \
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OMAP1UART##p)
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#define DEBUG_LL_OMAP1(p, mach) \
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_DEBUG_LL_ENTRY(mach, OMAP1_UART##p##_BASE, OMAP_PORT_SHIFT, \
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OMAP1UART##p)
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#define DEBUG_LL_OMAP2(p, mach) \
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_DEBUG_LL_ENTRY(mach, OMAP2_UART##p##_BASE, OMAP_PORT_SHIFT, \
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OMAP2UART##p)
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#define DEBUG_LL_OMAP3(p, mach) \
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_DEBUG_LL_ENTRY(mach, OMAP3_UART##p##_BASE, OMAP_PORT_SHIFT, \
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OMAP3UART##p)
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#define DEBUG_LL_OMAP4(p, mach) \
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_DEBUG_LL_ENTRY(mach, OMAP4_UART##p##_BASE, OMAP_PORT_SHIFT, \
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OMAP4UART##p)
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/* Zoom2/3 shift is different for UART1 and external port */
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#define DEBUG_LL_ZOOM(mach) \
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_DEBUG_LL_ENTRY(mach, ZOOM_UART_BASE, ZOOM_PORT_SHIFT, ZOOM_UART)
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static inline void __arch_decomp_setup(unsigned long arch_id)
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{
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int port = 0;
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/*
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* Initialize the port based on the machine ID from the bootloader.
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* Note that we're using macros here instead of switch statement
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* as machine_is functions are optimized out for the boards that
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* are not selected.
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*/
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do {
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/* omap7xx/8xx based boards using UART1 with shift 0 */
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DEBUG_LL_OMAP7XX(1, herald);
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DEBUG_LL_OMAP7XX(1, omap_perseus2);
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/* omap15xx/16xx based boards using UART1 */
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DEBUG_LL_OMAP1(1, ams_delta);
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DEBUG_LL_OMAP1(1, nokia770);
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DEBUG_LL_OMAP1(1, omap_h2);
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DEBUG_LL_OMAP1(1, omap_h3);
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DEBUG_LL_OMAP1(1, omap_innovator);
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DEBUG_LL_OMAP1(1, omap_osk);
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DEBUG_LL_OMAP1(1, omap_palmte);
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DEBUG_LL_OMAP1(1, omap_palmz71);
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/* omap15xx/16xx based boards using UART2 */
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DEBUG_LL_OMAP1(2, omap_palmtt);
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/* omap15xx/16xx based boards using UART3 */
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DEBUG_LL_OMAP1(3, sx1);
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/* omap2 based boards using UART1 */
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DEBUG_LL_OMAP2(1, omap2evm);
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DEBUG_LL_OMAP2(1, omap_2430sdp);
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DEBUG_LL_OMAP2(1, omap_apollon);
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DEBUG_LL_OMAP2(1, omap_h4);
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/* omap2 based boards using UART3 */
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DEBUG_LL_OMAP2(3, nokia_n800);
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DEBUG_LL_OMAP2(3, nokia_n810);
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DEBUG_LL_OMAP2(3, nokia_n810_wimax);
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/* omap3 based boards using UART1 */
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DEBUG_LL_OMAP2(1, omap3evm);
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DEBUG_LL_OMAP3(1, omap_3430sdp);
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DEBUG_LL_OMAP3(1, omap_3630sdp);
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/* omap3 based boards using UART3 */
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DEBUG_LL_OMAP3(3, cm_t35);
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DEBUG_LL_OMAP3(3, igep0020);
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DEBUG_LL_OMAP3(3, nokia_rx51);
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DEBUG_LL_OMAP3(3, omap3517evm);
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DEBUG_LL_OMAP3(3, omap3_beagle);
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DEBUG_LL_OMAP3(3, omap3_pandora);
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DEBUG_LL_OMAP3(3, omap_ldp);
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DEBUG_LL_OMAP3(3, overo);
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DEBUG_LL_OMAP3(3, touchbook);
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/* omap4 based boards using UART3 */
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DEBUG_LL_OMAP4(3, omap_4430sdp);
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/* zoom2/3 external uart */
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DEBUG_LL_ZOOM(omap_zoom2);
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DEBUG_LL_ZOOM(omap_zoom3);
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} while (0);
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}
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#define arch_decomp_setup() __arch_decomp_setup(arch_id)
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/*
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* nothing to do
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*/
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#define arch_decomp_wdog()
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