2 * Copyright (C) 2007-2008 Gabor Juhos <juhosg@openwrt.org>
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License version 2 as published
6 * by the Free Software Foundation.
10 #include <linux/types.h>
11 #include <linux/kernel.h>
12 #include <linux/init.h>
15 //#include <asm/bootinfo.h>
16 #include <asm/addrspace.h>
18 #include <asm/mach-adm5120/adm5120_info.h>
19 #include <asm/mach-adm5120/adm5120_defs.h>
20 #include <asm/mach-adm5120/adm5120_switch.h>
22 unsigned int adm5120_product_code;
23 unsigned int adm5120_revision;
24 unsigned int adm5120_package;
25 unsigned int adm5120_nand_boot;
26 unsigned long adm5120_speed;
27 unsigned long adm5120_mach_type;
30 * CPU settings detection
32 #define CODE_GET_PC(c) ((c) & CODE_PC_MASK)
33 #define CODE_GET_REV(c) (((c) >> CODE_REV_SHIFT) & CODE_REV_MASK)
34 #define CODE_GET_PK(c) (((c) >> CODE_PK_SHIFT) & CODE_PK_MASK)
35 #define CODE_GET_CLKS(c) (((c) >> CODE_CLKS_SHIFT) & CODE_CLKS_MASK)
36 #define CODE_GET_NAB(c) (((c) & CODE_NAB) != 0)
38 void adm5120_ndelay(u32 ns)
42 SW_WRITE_REG(SWITCH_REG_TIMER, TIMER_PERIOD_DEFAULT);
43 SW_WRITE_REG(SWITCH_REG_TIMER_INT, (TIMER_INT_TOS | TIMER_INT_TOM));
46 t &= TIMER_PERIOD_MASK;
47 SW_WRITE_REG(SWITCH_REG_TIMER, t | TIMER_TE);
49 /* wait until the timer expires */
51 t = SW_READ_REG(SWITCH_REG_TIMER_INT);
52 } while ((t & TIMER_INT_TOS) == 0);
54 /* leave the timer disabled */
55 SW_WRITE_REG(SWITCH_REG_TIMER, TIMER_PERIOD_DEFAULT);
56 SW_WRITE_REG(SWITCH_REG_TIMER_INT, (TIMER_INT_TOS | TIMER_INT_TOM));
59 void __init adm5120_soc_init(void)
64 code = SW_READ_REG(SWITCH_REG_CODE);
66 adm5120_product_code = CODE_GET_PC(code);
67 adm5120_revision = CODE_GET_REV(code);
68 adm5120_package = (CODE_GET_PK(code) == CODE_PK_BGA) ?
69 ADM5120_PACKAGE_BGA : ADM5120_PACKAGE_PQFP;
70 adm5120_nand_boot = CODE_GET_NAB(code);
72 clks = CODE_GET_CLKS(code);
73 adm5120_speed = ADM5120_SPEED_175;
75 adm5120_speed += 25000000;
77 adm5120_speed += 50000000;