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/addrspace.h>
17 #include <asm/mach-adm5120/adm5120_info.h>
18 #include <asm/mach-adm5120/adm5120_defs.h>
19 #include <asm/mach-adm5120/adm5120_switch.h>
21 unsigned int adm5120_product_code
;
22 unsigned int adm5120_revision
;
23 unsigned int adm5120_package
;
24 unsigned int adm5120_nand_boot
;
25 unsigned long adm5120_speed
;
28 * CPU settings detection
30 #define CODE_GET_PC(c) ((c) & CODE_PC_MASK)
31 #define CODE_GET_REV(c) (((c) >> CODE_REV_SHIFT) & CODE_REV_MASK)
32 #define CODE_GET_PK(c) (((c) >> CODE_PK_SHIFT) & CODE_PK_MASK)
33 #define CODE_GET_CLKS(c) (((c) >> CODE_CLKS_SHIFT) & CODE_CLKS_MASK)
34 #define CODE_GET_NAB(c) (((c) & CODE_NAB) != 0)
36 void adm5120_ndelay(u32 ns
)
40 SW_WRITE_REG(SWITCH_REG_TIMER
, TIMER_PERIOD_DEFAULT
);
41 SW_WRITE_REG(SWITCH_REG_TIMER_INT
, (TIMER_INT_TOS
| TIMER_INT_TOM
));
44 t
&= TIMER_PERIOD_MASK
;
45 SW_WRITE_REG(SWITCH_REG_TIMER
, t
| TIMER_TE
);
47 /* wait until the timer expires */
49 t
= SW_READ_REG(SWITCH_REG_TIMER_INT
);
50 } while ((t
& TIMER_INT_TOS
) == 0);
52 /* leave the timer disabled */
53 SW_WRITE_REG(SWITCH_REG_TIMER
, TIMER_PERIOD_DEFAULT
);
54 SW_WRITE_REG(SWITCH_REG_TIMER_INT
, (TIMER_INT_TOS
| TIMER_INT_TOM
));
57 void __init
adm5120_soc_init(void)
62 code
= SW_READ_REG(SWITCH_REG_CODE
);
64 adm5120_product_code
= CODE_GET_PC(code
);
65 adm5120_revision
= CODE_GET_REV(code
);
66 adm5120_package
= (CODE_GET_PK(code
) == CODE_PK_BGA
) ?
67 ADM5120_PACKAGE_BGA
: ADM5120_PACKAGE_PQFP
;
68 adm5120_nand_boot
= CODE_GET_NAB(code
);
70 clks
= CODE_GET_CLKS(code
);
71 adm5120_speed
= ADM5120_SPEED_175
;
73 adm5120_speed
+= 25000000;
75 adm5120_speed
+= 50000000;