1 // SPDX-License-Identifier: GPL-2.0-or-later 1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* 2 /*
3 * Copyright (c) 2011 Zhang, Keguang <keguang. 3 * Copyright (c) 2011 Zhang, Keguang <keguang.zhang@gmail.com>
4 * 4 *
5 * Modified from arch/mips/pnx833x/common/prom 5 * Modified from arch/mips/pnx833x/common/prom.c.
6 */ 6 */
7 7
8 #include <linux/io.h> 8 #include <linux/io.h>
9 #include <linux/init.h> 9 #include <linux/init.h>
10 #include <linux/memblock.h> 10 #include <linux/memblock.h>
11 #include <linux/serial_reg.h> 11 #include <linux/serial_reg.h>
12 #include <asm/fw/fw.h> 12 #include <asm/fw/fw.h>
13 13
14 #include <loongson1.h> 14 #include <loongson1.h>
15 15
16 unsigned long memsize; 16 unsigned long memsize;
17 17
18 void __init prom_init(void) 18 void __init prom_init(void)
19 { 19 {
20 void __iomem *uart_base; 20 void __iomem *uart_base;
21 21
22 fw_init_cmdline(); 22 fw_init_cmdline();
23 23
24 memsize = fw_getenvl("memsize"); 24 memsize = fw_getenvl("memsize");
25 if(!memsize) 25 if(!memsize)
26 memsize = DEFAULT_MEMSIZE; 26 memsize = DEFAULT_MEMSIZE;
27 27
28 if (strstr(arcs_cmdline, "console=ttyS 28 if (strstr(arcs_cmdline, "console=ttyS3"))
29 uart_base = ioremap(LS1X_UART3 29 uart_base = ioremap(LS1X_UART3_BASE, 0x0f);
30 else if (strstr(arcs_cmdline, "console 30 else if (strstr(arcs_cmdline, "console=ttyS2"))
31 uart_base = ioremap(LS1X_UART2 31 uart_base = ioremap(LS1X_UART2_BASE, 0x0f);
32 else if (strstr(arcs_cmdline, "console 32 else if (strstr(arcs_cmdline, "console=ttyS1"))
33 uart_base = ioremap(LS1X_UART1 33 uart_base = ioremap(LS1X_UART1_BASE, 0x0f);
34 else 34 else
35 uart_base = ioremap(LS1X_UART0 35 uart_base = ioremap(LS1X_UART0_BASE, 0x0f);
36 setup_8250_early_printk_port((unsigned 36 setup_8250_early_printk_port((unsigned long)uart_base, 0, 0);
37 } 37 }
38 38
39 void __init plat_mem_setup(void) 39 void __init plat_mem_setup(void)
40 { 40 {
41 memblock_add(0x0, (memsize << 20)); 41 memblock_add(0x0, (memsize << 20));
42 } 42 }
43 43
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