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* MPC8xx Internal Memory Map
* Copyright (c) 1997 Dan Malek (
* The I/O on the MPC860 is comprised of blocks of special registers
* and the dual port ram for the Communication Processor Module.
* Within this space are functional units such as the SIU, memory
* controller, system timers, and other control functions. It is
* a combination that I found difficult to separate into logical
* functional files.....but anyone else is welcome to try. -- Dan
#ifndef __IMMAP_8XX__
#define __IMMAP_8XX__
/* System configuration registers.
typedef struct sys_conf {
uint sc_siumcr;
uint sc_sypcr;
uint sc_swt;
char res1[2];
ushort sc_swsr;
uint sc_sipend;
uint sc_simask;
uint sc_siel;
uint sc_sivec;
uint sc_tesr;
char res2[0xc];
uint sc_sdcr;
char res3[0x4c];
} sysconf8xx_t;
/* PCMCIA configuration registers.
typedef struct pcmcia_conf {
uint pcmc_pbr0;
uint pcmc_por0;
uint pcmc_pbr1;
uint pcmc_por1;
uint pcmc_pbr2;
uint pcmc_por2;
uint pcmc_pbr3;
uint pcmc_por3;
uint pcmc_pbr4;
uint pcmc_por4;
uint pcmc_pbr5;
uint pcmc_por5;
uint pcmc_pbr6;
uint pcmc_por6;
uint pcmc_pbr7;
uint pcmc_por7;
char res1[0x20];
uint pcmc_pgcra;
uint pcmc_pgcrb;
uint pcmc_pscr;
char res2[4];
uint pcmc_pipr;
char res3[4];
uint pcmc_per;
char res4[4];
} pcmconf8xx_t;
/* Memory controller registers.
typedef struct mem_ctlr {
uint memc_br0;
uint memc_or0;
uint memc_br1;
uint memc_or1;
uint memc_br2;
uint memc_or2;
uint memc_br3;
uint memc_or3;
uint memc_br4;
uint memc_or4;
uint memc_br5;
uint memc_or5;
uint memc_br6;
uint memc_or6;
uint memc_br7;
uint memc_or7;
char res1[0x24];
uint memc_mar;
uint memc_mcr;
char res2[4];
uint memc_mamr;
uint memc_mbmr;
ushort memc_mstat;
ushort memc_mptpr;
uint memc_mdr;
char res3[0x80];
} memctl8xx_t;
/* System Integration Timers.
typedef struct sys_int_timers {
ushort sit_tbscr;
char res0[0x02];
uint sit_tbreff0;
uint sit_tbreff1;
char res1[0x14];
ushort sit_rtcsc;
char res2[0x02];
uint sit_rtc;
uint sit_rtsec;
uint sit_rtcal;
char res3[0x10];
ushort sit_piscr;
char res4[2];
uint sit_pitc;
uint sit_pitr;
char res5[0x34];
} sit8xx_t;
#define TBSCR_TBIRQ_MASK ((ushort)0xff00)
#define TBSCR_REFA ((ushort)0x0080)
#define TBSCR_REFB ((ushort)0x0040)
#define TBSCR_REFAE ((ushort)0x0008)
#define TBSCR_REFBE ((ushort)0x0004)
#define TBSCR_TBF ((ushort)0x0002)
#define TBSCR_TBE ((ushort)0x0001)
#define RTCSC_RTCIRQ_MASK ((ushort)0xff00)
#define RTCSC_SEC ((ushort)0x0080)
#define RTCSC_ALR ((ushort)0x0040)
#define RTCSC_38K ((ushort)0x0010)
#define RTCSC_SIE ((ushort)0x0008)
#define RTCSC_ALE ((ushort)0x0004)
#define RTCSC_RTF ((ushort)0x0002)
#define RTCSC_RTE ((ushort)0x0001)
#define PISCR_PIRQ_MASK ((ushort)0xff00)
#define PISCR_PS ((ushort)0x0080)
#define PISCR_PIE ((ushort)0x0004)
#define PISCR_PTF ((ushort)0x0002)
#define PISCR_PTE ((ushort)0x0001)
/* Clocks and Reset.
typedef struct clk_and_reset {
uint car_sccr;
uint car_plprcr;
uint car_rsr;
char res[0x74]; /* Reserved area */
} car8xx_t;
/* System Integration Timers keys.
typedef struct sitk {
uint sitk_tbscrk;
uint sitk_tbreff0k;
uint sitk_tbreff1k;
uint sitk_tbk;
char res1[0x10];
uint sitk_rtcsck;
uint sitk_rtck;
uint sitk_rtseck;
uint sitk_rtcalk;
char res2[0x10];
uint sitk_piscrk;
uint sitk_pitck;
char res3[0x38];
} sitk8xx_t;
/* Clocks and reset keys.
typedef struct cark {
uint cark_sccrk;
uint cark_plprcrk;
uint cark_rsrk;
char res[0x474];
} cark8xx_t;
/* The key to unlock registers maintained by keep-alive power.
#define KAPWR_KEY ((unsigned int)0x55ccaa33)
/* I2C
typedef struct i2c {
u_char i2c_i2mod;
char res1[3];
u_char i2c_i2add;
char res2[3];
u_char i2c_i2brg;
char res3[3];
u_char i2c_i2com;
char res4[3];
u_char i2c_i2cer;
char res5[3];
u_char i2c_i2cmr;
char res6[0x8b];
} i2c8xx_t;
/* DMA control/status registers.
typedef struct sdma_csr {
char res1[4];
uint sdma_sdar;
u_char sdma_sdsr;
char res3[3];
u_char sdma_sdmr;
char res4[3];
u_char sdma_idsr1;
char res5[3];
u_char sdma_idmr1;
char res6[3];
u_char sdma_idsr2;
char res7[3];
u_char sdma_idmr2;
char res8[0x13];
} sdma8xx_t;
/* Communication Processor Module Interrupt Controller.
typedef struct cpm_ic {
ushort cpic_civr;
char res[0xe];
uint cpic_cicr;
uint cpic_cipr;
uint cpic_cimr;
uint cpic_cisr;
} cpic8xx_t;
/* Input/Output Port control/status registers.
typedef struct io_port {
ushort iop_padir;
ushort iop_papar;
ushort iop_paodr;
ushort iop_padat;
char res1[8];
ushort iop_pcdir;
ushort iop_pcpar;
ushort iop_pcso;
ushort iop_pcdat;
ushort iop_pcint;
char res2[6];
ushort iop_pddir;
ushort iop_pdpar;
char res3[2];
ushort iop_pddat;
uint utmode;
char res4[4];
} iop8xx_t;
/* Communication Processor Module Timers
typedef struct cpm_timers {
ushort cpmt_tgcr;
char res1[0xe];
ushort cpmt_tmr1;
ushort cpmt_tmr2;
ushort cpmt_trr1;
ushort cpmt_trr2;
ushort cpmt_tcr1;
ushort cpmt_tcr2;
ushort cpmt_tcn1;
ushort cpmt_tcn2;
ushort cpmt_tmr3;
ushort cpmt_tmr4;
ushort cpmt_trr3;
ushort cpmt_trr4;
ushort cpmt_tcr3;
ushort cpmt_tcr4;
ushort cpmt_tcn3;
ushort cpmt_tcn4;
ushort cpmt_ter1;
ushort cpmt_ter2;
ushort cpmt_ter3;
ushort cpmt_ter4;
char res2[8];
} cpmtimer8xx_t;
/* Finally, the Communication Processor stuff.....
typedef struct scc { /* Serial communication channels */
uint scc_gsmrl;
uint scc_gsmrh;
ushort scc_psmr;
char res1[2];
ushort scc_todr;
ushort scc_dsr;
ushort scc_scce;
char res2[2];
ushort scc_sccm;
char res3;
u_char scc_sccs;
char res4[8];
} scc_t;
typedef struct smc { /* Serial management channels */
char res1[2];
ushort smc_smcmr;
char res2[2];
u_char smc_smce;
char res3[3];
u_char smc_smcm;
char res4[5];
} smc_t;
/* MPC860T Fast Ethernet Controller. It isn't part of the CPM, but
* it fits within the address space.
typedef struct fec {
uint fec_addr_low; /* lower 32 bits of station address */
ushort fec_addr_high; /* upper 16 bits of station address */
ushort res1; /* reserved */
uint fec_hash_table_high; /* upper 32-bits of hash table */
uint fec_hash_table_low; /* lower 32-bits of hash table */
uint fec_r_des_start; /* beginning of Rx descriptor ring */
uint fec_x_des_start; /* beginning of Tx descriptor ring */
uint fec_r_buff_size; /* Rx buffer size */
uint res2[9]; /* reserved */
uint fec_ecntrl; /* ethernet control register */
uint fec_ievent; /* interrupt event register */
uint fec_imask; /* interrupt mask register */
uint fec_ivec; /* interrupt level and vector status */
uint fec_r_des_active; /* Rx ring updated flag */
uint fec_x_des_active; /* Tx ring updated flag */
uint res3[10]; /* reserved */
uint fec_mii_data; /* MII data register */
uint fec_mii_speed; /* MII speed control register */
uint res4[17]; /* reserved */
uint fec_r_bound; /* end of RAM (read-only) */
uint fec_r_fstart; /* Rx FIFO start address */
uint res5[6]; /* reserved */
uint fec_x_fstart; /* Tx FIFO start address */
uint res6[17]; /* reserved */
uint fec_fun_code; /* fec SDMA function code */
uint res7[3]; /* reserved */
uint fec_r_cntrl; /* Rx control register */
uint fec_r_hash; /* Rx hash register */
uint res8[14]; /* reserved */
uint fec_x_cntrl; /* Tx control register */
uint res9[0x1e]; /* reserved */
} fec_t;
typedef struct comm_proc {
/* General control and status registers.
ushort cp_cpcr;
u_char res1[2];
ushort cp_rccr;
u_char res2;
u_char cp_rmds;
u_char res3[4];
ushort cp_cpmcr1;
ushort cp_cpmcr2;
ushort cp_cpmcr3;
ushort cp_cpmcr4;
u_char res4[2];
ushort cp_rter;
u_char res5[2];
ushort cp_rtmr;
u_char res6[0x14];
/* Baud rate generators.
uint cp_brgc1;
uint cp_brgc2;
uint cp_brgc3;
uint cp_brgc4;
/* Serial Communication Channels.
scc_t cp_scc[4];
/* Serial Management Channels.
smc_t cp_smc[2];
/* Serial Peripheral Interface.
ushort cp_spmode;
u_char res7[4];
u_char cp_spie;
u_char res8[3];
u_char cp_spim;
u_char res9[2];
u_char cp_spcom;
u_char res10[2];
/* Parallel Interface Port.
u_char res11[2];
ushort cp_pipc;
u_char res12[2];
ushort cp_ptpr;
uint cp_pbdir;
uint cp_pbpar;
u_char res13[2];
ushort cp_pbodr;
uint cp_pbdat;
/* Port E - MPC87x/88x only.
uint cp_pedir;
uint cp_pepar;
uint cp_peso;
uint cp_peodr;
uint cp_pedat;
/* Communications Processor Timing Register -
Contains RMII Timing for the FECs on MPC87x/88x only.
uint cp_cptr;
/* Serial Interface and Time Slot Assignment.
uint cp_simode;
u_char cp_sigmr;
u_char res15;
u_char cp_sistr;
u_char cp_sicmr;
u_char res16[4];
uint cp_sicr;
uint cp_sirp;
u_char res17[0xc];
u_char res19[0x100];
u_char cp_siram[0x200];
/* The fast ethernet controller is not really part of the CPM,
* but it resides in the address space.
fec_t cp_fec;
char res18[0xE00];
/* The MPC885 family has a second FEC here */
fec_t cp_fec2;
#define cp_fec1 cp_fec /* consistency macro */
/* Dual Ported RAM follows.
* There are many different formats for this memory area
* depending upon the devices used and options chosen.
* Some processors don't have all of it populated.
u_char cp_dpmem[0x1C00]; /* BD / Data / ucode */
/* Parameter RAM */
union {
u_char cp_dparam[0x400];
u16 cp_dparam16[0x200];
} cpm8xx_t;
/* Internal memory map.
typedef struct immap {
sysconf8xx_t im_siu_conf; /* SIU Configuration */
pcmconf8xx_t im_pcmcia; /* PCMCIA Configuration */
memctl8xx_t im_memctl; /* Memory Controller */
sit8xx_t im_sit; /* System integration timers */
car8xx_t im_clkrst; /* Clocks and reset */
sitk8xx_t im_sitk; /* Sys int timer keys */
cark8xx_t im_clkrstk; /* Clocks and reset keys */
char res[96];
i2c8xx_t im_i2c; /* I2C control/status */
sdma8xx_t im_sdma; /* SDMA control/status */
cpic8xx_t im_cpic; /* CPM Interrupt Controller */
iop8xx_t im_ioport; /* IO Port control/status */
cpmtimer8xx_t im_cpmtimer; /* CPM timers */
cpm8xx_t im_cpm; /* Communication processor */
} immap_t;
#endif /* __IMMAP_8XX__ */