diff options
| author | Jo-Philipp Wich <jow@openwrt.org> | 2009-04-21 21:59:59 +0000 |
|---|---|---|
| committer | Jo-Philipp Wich <jow@openwrt.org> | 2009-04-21 21:59:59 +0000 |
| commit | 18193fa5e9790e5c48ac42bb99f7477be2aed7f9 (patch) | |
| tree | 8ebeed64d6a23d1726f0411b7822f337974b8d6a /contrib/userspace-nvram/sdinitvals.h | |
| parent | a2b916ab736802050b19562b7c163e3f3bb1566f (diff) | |
contrib: add a userspace port of the Broadcom NVRAM kernel api, allows NVRAM manipulation on bcm47xx
Diffstat (limited to 'contrib/userspace-nvram/sdinitvals.h')
| -rw-r--r-- | contrib/userspace-nvram/sdinitvals.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/contrib/userspace-nvram/sdinitvals.h b/contrib/userspace-nvram/sdinitvals.h new file mode 100644 index 000000000..5a289adec --- /dev/null +++ b/contrib/userspace-nvram/sdinitvals.h @@ -0,0 +1,30 @@ +/* + * SDRAM init values + * + * Copyright 2007, Broadcom Corporation + * Copyright 2009, OpenWrt.org + * All Rights Reserved. + * + * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY + * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM + * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS + * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE. + * + */ + +#ifndef _sdinitvals_h_ +#define _sdinitvals_h_ + +/* SDRAM refresh control (refresh) register bits */ +#define SDRAM_REF(p) (((p)&0xff) | SDRAM_REF_EN) /* Refresh period */ +#define SDRAM_REF_EN 0x8000 /* Writing 1 enables periodic refresh */ + +/* SDRAM Core default Init values (OCP ID 0x803) */ +#define MEM4MX16X2 0x419 /* 16 MB */ + +#define SDRAM_INIT MEM4MX16X2 +#define SDRAM_BURSTFULL 0x0000 /* Use full page bursts */ +#define SDRAM_CONFIG SDRAM_BURSTFULL +#define SDRAM_REFRESH SDRAM_REF(0x40) + +#endif /* _sdinitvals_h_ */ |