~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/arch/mips/lasat/prom.c

Version: ~ [ linux-5.12-rc1 ] ~ [ linux-5.11.2 ] ~ [ linux-5.10.19 ] ~ [ linux-5.9.16 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.101 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.177 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.222 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.258 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.258 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.18.140 ] ~ [ linux-3.16.85 ] ~ [ linux-3.14.79 ] ~ [ linux-3.12.74 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 /*
  2  * PROM interface routines.
  3  */
  4 #include <linux/types.h>
  5 #include <linux/init.h>
  6 #include <linux/string.h>
  7 #include <linux/ctype.h>
  8 #include <linux/kernel.h>
  9 #include <linux/mm.h>
 10 #include <linux/bootmem.h>
 11 #include <linux/ioport.h>
 12 #include <asm/bootinfo.h>
 13 #include <asm/lasat/lasat.h>
 14 #include <asm/cpu.h>
 15 
 16 #include "at93c.h"
 17 #include <asm/lasat/eeprom.h>
 18 #include "prom.h"
 19 
 20 #define RESET_VECTOR    0xbfc00000
 21 #define PROM_JUMP_TABLE_ENTRY(n) (*((u32 *)(RESET_VECTOR + 0x20) + n))
 22 #define PROM_DISPLAY_ADDR       PROM_JUMP_TABLE_ENTRY(0)
 23 #define PROM_PUTC_ADDR          PROM_JUMP_TABLE_ENTRY(1)
 24 #define PROM_MONITOR_ADDR       PROM_JUMP_TABLE_ENTRY(2)
 25 
 26 static void null_prom_display(const char *string, int pos, int clear)
 27 {
 28 }
 29 
 30 static void null_prom_monitor(void)
 31 {
 32 }
 33 
 34 static void null_prom_putc(char c)
 35 {
 36 }
 37 
 38 /* these are functions provided by the bootloader */
 39 static void (*__prom_putc)(char c) = null_prom_putc;
 40 
 41 void prom_putchar(char c)
 42 {
 43         __prom_putc(c);
 44 }
 45 
 46 void (*prom_display)(const char *string, int pos, int clear) =
 47                 null_prom_display;
 48 void (*prom_monitor)(void) = null_prom_monitor;
 49 
 50 unsigned int lasat_ndelay_divider;
 51 
 52 static void setup_prom_vectors(void)
 53 {
 54         u32 version = *(u32 *)(RESET_VECTOR + 0x90);
 55 
 56         if (version >= 307) {
 57                 prom_display = (void *)PROM_DISPLAY_ADDR;
 58                 __prom_putc = (void *)PROM_PUTC_ADDR;
 59                 prom_monitor = (void *)PROM_MONITOR_ADDR;
 60         }
 61         printk(KERN_DEBUG "prom vectors set up\n");
 62 }
 63 
 64 static struct at93c_defs at93c_defs[N_MACHTYPES] = {
 65         {
 66                 .reg            = (void *)AT93C_REG_100,
 67                 .rdata_reg      = (void *)AT93C_RDATA_REG_100,
 68                 .rdata_shift    = AT93C_RDATA_SHIFT_100,
 69                 .wdata_shift    = AT93C_WDATA_SHIFT_100,
 70                 .cs             = AT93C_CS_M_100,
 71                 .clk            = AT93C_CLK_M_100
 72         }, {
 73                 .reg            = (void *)AT93C_REG_200,
 74                 .rdata_reg      = (void *)AT93C_RDATA_REG_200,
 75                 .rdata_shift    = AT93C_RDATA_SHIFT_200,
 76                 .wdata_shift    = AT93C_WDATA_SHIFT_200,
 77                 .cs             = AT93C_CS_M_200,
 78                 .clk            = AT93C_CLK_M_200
 79         },
 80 };
 81 
 82 void __init prom_init(void)
 83 {
 84         int argc = fw_arg0;
 85         char **argv = (char **) fw_arg1;
 86 
 87         setup_prom_vectors();
 88 
 89         if (IS_LASAT_200()) {
 90                 printk(KERN_INFO "LASAT 200 board\n");
 91                 lasat_ndelay_divider = LASAT_200_DIVIDER;
 92                 at93c = &at93c_defs[1];
 93         } else {
 94                 printk(KERN_INFO "LASAT 100 board\n");
 95                 lasat_ndelay_divider = LASAT_100_DIVIDER;
 96                 at93c = &at93c_defs[0];
 97         }
 98 
 99         lasat_init_board_info();                /* Read info from EEPROM */
100 
101         /* Get the command line */
102         if (argc > 0) {
103                 strncpy(arcs_cmdline, argv[0], COMMAND_LINE_SIZE-1);
104                 arcs_cmdline[COMMAND_LINE_SIZE-1] = '\0';
105         }
106 
107         /* Set the I/O base address */
108         set_io_port_base(KSEG1);
109 
110         /* Set memory regions */
111         ioport_resource.start = 0;
112         ioport_resource.end = 0xffffffff;       /* Wrong, fixme.  */
113 
114         add_memory_region(0, lasat_board_info.li_memsize, BOOT_MEM_RAM);
115 }
116 
117 void __init prom_free_prom_memory(void)
118 {
119 }
120 
121 const char *get_system_type(void)
122 {
123         return lasat_board_info.li_bmstr;
124 }
125 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp