ref: 6fc0e0541c6f27dcb4c6196eab5badedf49c01c8
dir: /sys/src/9/omap/io.h/
/*
* the ``general-purpose'' memory controller.
* only works with flash memory.
*/
enum {
/* syscfg bits */
Idlemask = MASK(2) << 3,
Noidle = 1 << 3,
/* config bits */
Postnandwrites = 1<<0, /* force nand reg. writes to be posted */
/* indices of cscfg[].cfg[] */
Csctl = 1 - 1, /* chip-select signal ctl */
Csmap = 7 - 1, /* chip-select addr map cfg */
/* Csctl bits */
Muxadddata = 1 << 9,
Devtypemask = MASK(2) << 10,
Devtypenor = 0 << 10,
Devtypenand = 2 << 10,
Devsizemask = 1 << 12,
Devsize8 = 0 << 12,
Devsize16 = 1 << 12,
Writesync = 1 << 27,
Readsync = 1 << 29,
/* Csmap bits */
Csvalid = 1 << 6,
MB16 = 017 << 8, /* 16MB size */
MB128 = 010 << 8, /* 128MB size */
};
typedef struct Gpmc Gpmc;
typedef struct Gpmccs Gpmccs;
/*
* configuration for non-dram (e.g., flash) memory
*/
struct Gpmc { /* hw registers */
uchar _pad0[0x10];
ulong syscfg;
ulong syssts;
ulong irqsts;
ulong irqenable;
uchar _pad1[0x40 - 0x20];
ulong tmout_ctl;
ulong erraddr;
ulong errtype;
ulong _pad7;
ulong config;
ulong sts;
uchar _pad2[0x60 - 0x58];
/* chip-select config */
struct Gpmccs {
ulong cfg[7];
ulong nandcmd;
ulong nandaddr;
ulong nanddata;
ulong _pad6[2];
} cscfg[8];
/* prefetch */
ulong prefcfg[2];
ulong _pad8;
ulong prefctl;
ulong prefsts;
/* ecc */
ulong ecccfg;
ulong eccctl;
ulong eccsize;
ulong eccres[9];
uchar _pad3[0x240 - 0x224];
/* bch */
ulong bchres[8][4];
uchar _pad4[0x2d0 - 0x2c0];
ulong bchswdata;
};