Your ROOT_URL in app.ini is https://src.whiteboxsystems.nl/ but you are visiting http://src.whiteboxsystems.nl/Whitebox/u-boot/commit/121cb96d511789bb8aa8b844aa163710ab4acc35 You should set ROOT_URL correctly, otherwise the web may not work correctly.
Whitebox
/
u-boot
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Initial revision

Browse Source
master
wdenk 23 years ago
parent 82e299bf89
commit 121cb96d51
3 changed files with 1532 additions and 0 deletions
  1. 209
      cpu/mpc8260/commproc.c
  2. 740
      include/asm-ppc/cpm_8260.h
  3. 583
      post/uart.c

209
cpu/mpc8260/commproc.c
Unescape View File

@ -0,0 +1,209 @@
/*
* This file is based on "arch/ppc/8260_io/commproc.c" - here is it's
* copyright notice:
*
* General Purpose functions for the global management of the
* 8260 Communication Processor Module.
* Copyright (c) 1999 Dan Malek (dmalek@jlc.net)
* Copyright (c) 2000 MontaVista Software, Inc (source@mvista.com)
* 2.3.99 Updates
*
* In addition to the individual control of the communication
* channels, there are a few functions that globally affect the
* communication processor.
*
* Buffer descriptors must be allocated from the dual ported memory
* space. The allocator for that is here. When the communication
* process is reset, we reclaim the memory available. There is
* currently no deallocator for this memory.
*/
#include <common.h>
#include <asm/cpm_8260.h>
/*
* because we have stack and init data in dual port ram
* we must reduce the size
*/
#undef CPM_DATAONLY_SIZE
#define CPM_DATAONLY_SIZE ((uint)(8 * 1024) - CPM_DATAONLY_BASE)
void
m8260_cpm_reset(void)
{
DECLARE_GLOBAL_DATA_PTR;
volatile immap_t *immr = (immap_t *)CFG_IMMR;
volatile ulong count;
/* Reclaim the DP memory for our use.
*/
gd->dp_alloc_base = CPM_DATAONLY_BASE;
gd->dp_alloc_top = gd->dp_alloc_base + CPM_DATAONLY_SIZE;
/*
* Reset CPM
*/
immr->im_cpm.cp_cpcr = CPM_CR_RST;
count = 0;
do { /* Spin until command processed */
__asm__ __volatile__ ("eieio");
} while ((immr->im_cpm.cp_cpcr & CPM_CR_FLG) && ++count < 1000000);
#ifdef CONFIG_HARD_I2C
*((unsigned short*)(&immr->im_dprambase[PROFF_I2C_BASE])) = 0;
#endif
}
/* Allocate some memory from the dual ported ram.
* To help protocols with object alignment restrictions, we do that
* if they ask.
*/
uint
m8260_cpm_dpalloc(uint size, uint align)
{
DECLARE_GLOBAL_DATA_PTR;
volatile immap_t *immr = (immap_t *)CFG_IMMR;
uint retloc;
uint align_mask, off;
uint savebase;
align_mask = align - 1;
savebase = gd->dp_alloc_base;
if ((off = (gd->dp_alloc_base & align_mask)) != 0)
gd->dp_alloc_base += (align - off);
if ((off = size & align_mask) != 0)
size += align - off;
if ((gd->dp_alloc_base + size) >= gd->dp_alloc_top) {
gd->dp_alloc_base = savebase;
panic("m8260_cpm_dpalloc: ran out of dual port ram!");
}
retloc = gd->dp_alloc_base;
gd->dp_alloc_base += size;
memset((void *)&immr->im_dprambase[retloc], 0, size);
return(retloc);
}
/* We also own one page of host buffer space for the allocation of
* UART "fifos" and the like.
*/
uint
m8260_cpm_hostalloc(uint size, uint align)
{
/* the host might not even have RAM yet - just use dual port RAM */
return (m8260_cpm_dpalloc(size, align));
}
/* Set a baud rate generator. This needs lots of work. There are
* eight BRGs, which can be connected to the CPM channels or output
* as clocks. The BRGs are in two different block of internal
* memory mapped space.
* The baud rate clock is the system clock divided by something.
* It was set up long ago during the initial boot phase and is
* is given to us.
* Baud rate clocks are zero-based in the driver code (as that maps
* to port numbers). Documentation uses 1-based numbering.
*/
#define BRG_INT_CLK gd->brg_clk
#define BRG_UART_CLK ((BRG_INT_CLK + 15) / 16)
/* This function is used by UARTS, or anything else that uses a 16x
* oversampled clock.
*/
void
m8260_cpm_setbrg(uint brg, uint rate)
{
DECLARE_GLOBAL_DATA_PTR;
volatile immap_t *immr = (immap_t *)CFG_IMMR;
volatile uint *bp;
/* This is good enough to get SMCs running.....
*/
if (brg < 4) {
bp = (uint *)&immr->im_brgc1;
}
else {
bp = (uint *)&immr->im_brgc5;
brg -= 4;
}
bp += brg;
*bp = (((((BRG_UART_CLK+rate-1)/rate)-1)&0xfff)<<1)|CPM_BRG_EN;
}
/* This function is used to set high speed synchronous baud rate
* clocks.
*/
void
m8260_cpm_fastbrg(uint brg, uint rate, int div16)
{
DECLARE_GLOBAL_DATA_PTR;
volatile immap_t *immr = (immap_t *)CFG_IMMR;
volatile uint *bp;
/* This is good enough to get SMCs running.....
*/
if (brg < 4) {
bp = (uint *)&immr->im_brgc1;
}
else {
bp = (uint *)&immr->im_brgc5;
brg -= 4;
}
bp += brg;
*bp = (((((BRG_INT_CLK+rate-1)/rate)-1)&0xfff)<<1)|CPM_BRG_EN;
if (div16)
*bp |= CPM_BRG_DIV16;
}
/* This function is used to set baud rate generators using an external
* clock source and 16x oversampling.
*/
void
m8260_cpm_extcbrg(uint brg, uint rate, uint extclk, int pinsel)
{
volatile immap_t *immr = (immap_t *)CFG_IMMR;
volatile uint *bp;
if (brg < 4) {
bp = (uint *)&immr->im_brgc1;
}
else {
bp = (uint *)&immr->im_brgc5;
brg -= 4;
}
bp += brg;
*bp = ((((((extclk/16)+rate-1)/rate)-1)&0xfff)<<1)|CPM_BRG_EN;
if (pinsel == 0)
*bp |= CPM_BRG_EXTC_CLK3_9;
else
*bp |= CPM_BRG_EXTC_CLK5_15;
}
#ifdef CONFIG_POST
void post_word_store (ulong a)
{
volatile ulong *save_addr =
(volatile ulong *)(CFG_IMMR + CPM_POST_WORD_ADDR);
*save_addr = a;
}
ulong post_word_load (void)
{
volatile ulong *save_addr =
(volatile ulong *)(CFG_IMMR + CPM_POST_WORD_ADDR);
return *save_addr;
}
#endif /* CONFIG_POST */

740
include/asm-ppc/cpm_8260.h
Unescape View File

@ -0,0 +1,740 @@
/*
* MPC8260 Communication Processor Module.
* Copyright (c) 1999 Dan Malek (dmalek@jlc.net)
*
* This file contains structures and information for the communication
* processor channels found in the dual port RAM or parameter RAM.
* All CPM control and status is available through the MPC8260 internal
* memory map. See immap.h for details.
*/
#ifndef __CPM_82XX__
#define __CPM_82XX__
#include <asm/immap_8260.h>
/* CPM Command register.
*/
#define CPM_CR_RST ((uint)0x80000000)
#define CPM_CR_PAGE ((uint)0x7c000000)
#define CPM_CR_SBLOCK ((uint)0x03e00000)
#define CPM_CR_FLG ((uint)0x00010000)
#define CPM_CR_MCN ((uint)0x00003fc0)
#define CPM_CR_OPCODE ((uint)0x0000000f)
/* Device sub-block and page codes.
*/
#define CPM_CR_SCC1_SBLOCK (0x04)
#define CPM_CR_SCC2_SBLOCK (0x05)
#define CPM_CR_SCC3_SBLOCK (0x06)
#define CPM_CR_SCC4_SBLOCK (0x07)
#define CPM_CR_SMC1_SBLOCK (0x08)
#define CPM_CR_SMC2_SBLOCK (0x09)
#define CPM_CR_SPI_SBLOCK (0x0a)
#define CPM_CR_I2C_SBLOCK (0x0b)
#define CPM_CR_TIMER_SBLOCK (0x0f)
#define CPM_CR_RAND_SBLOCK (0x0e)
#define CPM_CR_FCC1_SBLOCK (0x10)
#define CPM_CR_FCC2_SBLOCK (0x11)
#define CPM_CR_FCC3_SBLOCK (0x12)
#define CPM_CR_IDMA1_SBLOCK (0x14)
#define CPM_CR_IDMA2_SBLOCK (0x15)
#define CPM_CR_IDMA3_SBLOCK (0x16)
#define CPM_CR_IDMA4_SBLOCK (0x17)
#define CPM_CR_MCC1_SBLOCK (0x1c)
#define CPM_CR_SCC1_PAGE (0x00)
#define CPM_CR_SCC2_PAGE (0x01)
#define CPM_CR_SCC3_PAGE (0x02)
#define CPM_CR_SCC4_PAGE (0x03)
#define CPM_CR_SMC1_PAGE (0x07)
#define CPM_CR_SMC2_PAGE (0x08)
#define CPM_CR_SPI_PAGE (0x09)
#define CPM_CR_I2C_PAGE (0x0a)
#define CPM_CR_TIMER_PAGE (0x0a)
#define CPM_CR_RAND_PAGE (0x0a)
#define CPM_CR_FCC1_PAGE (0x04)
#define CPM_CR_FCC2_PAGE (0x05)
#define CPM_CR_FCC3_PAGE (0x06)
#define CPM_CR_IDMA1_PAGE (0x07)
#define CPM_CR_IDMA2_PAGE (0x08)
#define CPM_CR_IDMA3_PAGE (0x09)
#define CPM_CR_IDMA4_PAGE (0x0a)
#define CPM_CR_MCC1_PAGE (0x07)
#define CPM_CR_MCC2_PAGE (0x08)
/* Some opcodes (there are more...later)
*/
#define CPM_CR_INIT_TRX ((ushort)0x0000)
#define CPM_CR_INIT_RX ((ushort)0x0001)
#define CPM_CR_INIT_TX ((ushort)0x0002)
#define CPM_CR_HUNT_MODE ((ushort)0x0003)
#define CPM_CR_STOP_TX ((ushort)0x0004)
#define CPM_CR_RESTART_TX ((ushort)0x0006)
#define CPM_CR_SET_GADDR ((ushort)0x0008)
#define mk_cr_cmd(PG, SBC, MCN, OP) \
((PG << 26) | (SBC << 21) | (MCN << 6) | OP)
/* Dual Port RAM addresses. The first 16K is available for almost
* any CPM use, so we put the BDs there. The first 128 bytes are
* used for SMC1 and SMC2 parameter RAM, so we start allocating
* BDs above that. All of this must change when we start
* downloading RAM microcode.
*/
#define CPM_DATAONLY_BASE ((uint)128)
#define CPM_DATAONLY_SIZE ((uint)(16 * 1024) - CPM_DATAONLY_BASE)
#define CPM_DP_NOSPACE ((uint)0x7fffffff)
#define CPM_FCC_SPECIAL_BASE ((uint)0x0000b000)
/* The number of pages of host memory we allocate for CPM. This is
* done early in kernel initialization to get physically contiguous
* pages.
*/
#define NUM_CPM_HOST_PAGES 2
/* Export the base address of the communication processor registers
* and dual port ram.
*/
extern cpm8260_t *cpmp; /* Pointer to comm processor */
uint m8260_cpm_dpalloc(uint size, uint align);
uint m8260_cpm_hostalloc(uint size, uint align);
void m8260_cpm_setbrg(uint brg, uint rate);
void m8260_cpm_fastbrg(uint brg, uint rate, int div16);
void m8260_cpm_extcbrg(uint brg, uint rate, uint extclk, int pinsel);
/* Buffer descriptors used by many of the CPM protocols.
*/
typedef struct cpm_buf_desc {
ushort cbd_sc; /* Status and Control */
ushort cbd_datlen; /* Data length in buffer */
uint cbd_bufaddr; /* Buffer address in host memory */
} cbd_t;
#define BD_SC_EMPTY ((ushort)0x8000) /* Recieve is empty */
#define BD_SC_READY ((ushort)0x8000) /* Transmit is ready */
#define BD_SC_WRAP ((ushort)0x2000) /* Last buffer descriptor */
#define BD_SC_INTRPT ((ushort)0x1000) /* Interrupt on change */
#define BD_SC_LAST ((ushort)0x0800) /* Last buffer in frame */
#define BD_SC_CM ((ushort)0x0200) /* Continous mode */
#define BD_SC_ID ((ushort)0x0100) /* Rec'd too many idles */
#define BD_SC_P ((ushort)0x0100) /* xmt preamble */
#define BD_SC_BR ((ushort)0x0020) /* Break received */
#define BD_SC_FR ((ushort)0x0010) /* Framing error */
#define BD_SC_PR ((ushort)0x0008) /* Parity error */
#define BD_SC_OV ((ushort)0x0002) /* Overrun */
#define BD_SC_CD ((ushort)0x0001) /* ?? */
/* Function code bits, usually generic to devices.
*/
#define CPMFCR_GBL ((u_char)0x20) /* Set memory snooping */
#define CPMFCR_EB ((u_char)0x10) /* Set big endian byte order */
#define CPMFCR_TC2 ((u_char)0x04) /* Transfer code 2 value */
#define CPMFCR_DTB ((u_char)0x02) /* Use local bus for data when set */
#define CPMFCR_BDB ((u_char)0x01) /* Use local bus for BD when set */
/* Parameter RAM offsets from the base.
*/
#define CPM_POST_WORD_ADDR 0x80FC /* steal a long at the end of SCC1 */
#define PROFF_SCC1 ((uint)0x8000)
#define PROFF_SCC2 ((uint)0x8100)
#define PROFF_SCC3 ((uint)0x8200)
#define PROFF_SCC4 ((uint)0x8300)
#define PROFF_FCC1 ((uint)0x8400)
#define PROFF_FCC2 ((uint)0x8500)
#define PROFF_FCC3 ((uint)0x8600)
#define PROFF_MCC1 ((uint)0x8700)
#define PROFF_SMC1_BASE ((uint)0x87fc)
#define PROFF_IDMA1_BASE ((uint)0x87fe)
#define PROFF_MCC2 ((uint)0x8800)
#define PROFF_SMC2_BASE ((uint)0x88fc)
#define PROFF_IDMA2_BASE ((uint)0x88fe)
#define PROFF_SPI_BASE ((uint)0x89fc)
#define PROFF_IDMA3_BASE ((uint)0x89fe)
#define PROFF_TIMERS ((uint)0x8ae0)
#define PROFF_REVNUM ((uint)0x8af0)
#define PROFF_RAND ((uint)0x8af8)
#define PROFF_I2C_BASE ((uint)0x8afc)
#define PROFF_IDMA4_BASE ((uint)0x8afe)
/* The SMCs are relocated to any of the first eight DPRAM pages.
* We will fix these at the first locations of DPRAM, until we
* get some microcode patches :-).
* The parameter ram space for the SMCs is fifty-some bytes, and
* they are required to start on a 64 byte boundary.
*/
#define PROFF_SMC1 (0)
#define PROFF_SMC2 (64)
/* Define enough so I can at least use the serial port as a UART.
*/
typedef struct smc_uart {
ushort smc_rbase; /* Rx Buffer descriptor base address */
ushort smc_tbase; /* Tx Buffer descriptor base address */
u_char smc_rfcr; /* Rx function code */
u_char smc_tfcr; /* Tx function code */
ushort smc_mrblr; /* Max receive buffer length */
uint smc_rstate; /* Internal */
uint smc_idp; /* Internal */
ushort smc_rbptr; /* Internal */
ushort smc_ibc; /* Internal */
uint smc_rxtmp; /* Internal */
uint smc_tstate; /* Internal */
uint smc_tdp; /* Internal */
ushort smc_tbptr; /* Internal */
ushort smc_tbc; /* Internal */
uint smc_txtmp; /* Internal */
ushort smc_maxidl; /* Maximum idle characters */
ushort smc_tmpidl; /* Temporary idle counter */
ushort smc_brklen; /* Last received break length */
ushort smc_brkec; /* rcv'd break condition counter */
ushort smc_brkcr; /* xmt break count register */
ushort smc_rmask; /* Temporary bit mask */
uint smc_stmp; /* SDMA Temp */
} smc_uart_t;
/* SMC uart mode register (Internal memory map).
*/
#define SMCMR_REN ((ushort)0x0001)
#define SMCMR_TEN ((ushort)0x0002)
#define SMCMR_DM ((ushort)0x000c)
#define SMCMR_SM_GCI ((ushort)0x0000)
#define SMCMR_SM_UART ((ushort)0x0020)
#define SMCMR_SM_TRANS ((ushort)0x0030)
#define SMCMR_SM_MASK ((ushort)0x0030)
#define SMCMR_PM_EVEN ((ushort)0x0100) /* Even parity, else odd */
#define SMCMR_REVD SMCMR_PM_EVEN
#define SMCMR_PEN ((ushort)0x0200) /* Parity enable */
#define SMCMR_BS SMCMR_PEN
#define SMCMR_SL ((ushort)0x0400) /* Two stops, else one */
#define SMCR_CLEN_MASK ((ushort)0x7800) /* Character length */
#define smcr_mk_clen(C) (((C) << 11) & SMCR_CLEN_MASK)
/* SMC Event and Mask register.
*/
#define SMCM_TXE ((unsigned char)0x10)
#define SMCM_BSY ((unsigned char)0x04)
#define SMCM_TX ((unsigned char)0x02)
#define SMCM_RX ((unsigned char)0x01)
/* Baud rate generators.
*/
#define CPM_BRG_RST ((uint)0x00020000)
#define CPM_BRG_EN ((uint)0x00010000)
#define CPM_BRG_EXTC_INT ((uint)0x00000000)
#define CPM_BRG_EXTC_CLK3_9 ((uint)0x00004000)
#define CPM_BRG_EXTC_CLK5_15 ((uint)0x00008000)
#define CPM_BRG_ATB ((uint)0x00002000)
#define CPM_BRG_CD_MASK ((uint)0x00001ffe)
#define CPM_BRG_DIV16 ((uint)0x00000001)
/* SCCs.
*/
#define SCC_GSMRH_IRP ((uint)0x00040000)
#define SCC_GSMRH_GDE ((uint)0x00010000)
#define SCC_GSMRH_TCRC_CCITT ((uint)0x00008000)
#define SCC_GSMRH_TCRC_BISYNC ((uint)0x00004000)
#define SCC_GSMRH_TCRC_HDLC ((uint)0x00000000)
#define SCC_GSMRH_REVD ((uint)0x00002000)
#define SCC_GSMRH_TRX ((uint)0x00001000)
#define SCC_GSMRH_TTX ((uint)0x00000800)
#define SCC_GSMRH_CDP ((uint)0x00000400)
#define SCC_GSMRH_CTSP ((uint)0x00000200)
#define SCC_GSMRH_CDS ((uint)0x00000100)
#define SCC_GSMRH_CTSS ((uint)0x00000080)
#define SCC_GSMRH_TFL ((uint)0x00000040)
#define SCC_GSMRH_RFW ((uint)0x00000020)
#define SCC_GSMRH_TXSY ((uint)0x00000010)
#define SCC_GSMRH_SYNL16 ((uint)0x0000000c)
#define SCC_GSMRH_SYNL8 ((uint)0x00000008)
#define SCC_GSMRH_SYNL4 ((uint)0x00000004)
#define SCC_GSMRH_RTSM ((uint)0x00000002)
#define SCC_GSMRH_RSYN ((uint)0x00000001)
#define SCC_GSMRL_SIR ((uint)0x80000000) /* SCC2 only */
#define SCC_GSMRL_EDGE_NONE ((uint)0x60000000)
#define SCC_GSMRL_EDGE_NEG ((uint)0x40000000)
#define SCC_GSMRL_EDGE_POS ((uint)0x20000000)
#define SCC_GSMRL_EDGE_BOTH ((uint)0x00000000)
#define SCC_GSMRL_TCI ((uint)0x10000000)
#define SCC_GSMRL_TSNC_3 ((uint)0x0c000000)
#define SCC_GSMRL_TSNC_4 ((uint)0x08000000)
#define SCC_GSMRL_TSNC_14 ((uint)0x04000000)
#define SCC_GSMRL_TSNC_INF ((uint)0x00000000)
#define SCC_GSMRL_RINV ((uint)0x02000000)
#define SCC_GSMRL_TINV ((uint)0x01000000)
#define SCC_GSMRL_TPL_128 ((uint)0x00c00000)
#define SCC_GSMRL_TPL_64 ((uint)0x00a00000)
#define SCC_GSMRL_TPL_48 ((uint)0x00800000)
#define SCC_GSMRL_TPL_32 ((uint)0x00600000)
#define SCC_GSMRL_TPL_16 ((uint)0x00400000)
#define SCC_GSMRL_TPL_8 ((uint)0x00200000)
#define SCC_GSMRL_TPL_NONE ((uint)0x00000000)
#define SCC_GSMRL_TPP_ALL1 ((uint)0x00180000)
#define SCC_GSMRL_TPP_01 ((uint)0x00100000)
#define SCC_GSMRL_TPP_10 ((uint)0x00080000)
#define SCC_GSMRL_TPP_ZEROS ((uint)0x00000000)
#define SCC_GSMRL_TEND ((uint)0x00040000)
#define SCC_GSMRL_TDCR_32 ((uint)0x00030000)
#define SCC_GSMRL_TDCR_16 ((uint)0x00020000)
#define SCC_GSMRL_TDCR_8 ((uint)0x00010000)
#define SCC_GSMRL_TDCR_1 ((uint)0x00000000)
#define SCC_GSMRL_RDCR_32 ((uint)0x0000c000)
#define SCC_GSMRL_RDCR_16 ((uint)0x00008000)
#define SCC_GSMRL_RDCR_8 ((uint)0x00004000)
#define SCC_GSMRL_RDCR_1 ((uint)0x00000000)
#define SCC_GSMRL_RENC_DFMAN ((uint)0x00003000)
#define SCC_GSMRL_RENC_MANCH ((uint)0x00002000)
#define SCC_GSMRL_RENC_FM0 ((uint)0x00001000)
#define SCC_GSMRL_RENC_NRZI ((uint)0x00000800)
#define SCC_GSMRL_RENC_NRZ ((uint)0x00000000)
#define SCC_GSMRL_TENC_DFMAN ((uint)0x00000600)
#define SCC_GSMRL_TENC_MANCH ((uint)0x00000400)
#define SCC_GSMRL_TENC_FM0 ((uint)0x00000200)
#define SCC_GSMRL_TENC_NRZI ((uint)0x00000100)
#define SCC_GSMRL_TENC_NRZ ((uint)0x00000000)
#define SCC_GSMRL_DIAG_LE ((uint)0x000000c0) /* Loop and echo */
#define SCC_GSMRL_DIAG_ECHO ((uint)0x00000080)
#define SCC_GSMRL_DIAG_LOOP ((uint)0x00000040)
#define SCC_GSMRL_DIAG_NORM ((uint)0x00000000)
#define SCC_GSMRL_ENR ((uint)0x00000020)
#define SCC_GSMRL_ENT ((uint)0x00000010)
#define SCC_GSMRL_MODE_ENET ((uint)0x0000000c)
#define SCC_GSMRL_MODE_DDCMP ((uint)0x00000009)
#define SCC_GSMRL_MODE_BISYNC ((uint)0x00000008)
#define SCC_GSMRL_MODE_V14 ((uint)0x00000007)
#define SCC_GSMRL_MODE_AHDLC ((uint)0x00000006)
#define SCC_GSMRL_MODE_PROFIBUS ((uint)0x00000005)
#define SCC_GSMRL_MODE_UART ((uint)0x00000004)
#define SCC_GSMRL_MODE_SS7 ((uint)0x00000003)
#define SCC_GSMRL_MODE_ATALK ((uint)0x00000002)
#define SCC_GSMRL_MODE_HDLC ((uint)0x00000000)
#define SCC_TODR_TOD ((ushort)0x8000)
/* SCC Event and Mask register.
*/
#define SCCM_TXE ((unsigned char)0x10)
#define SCCM_BSY ((unsigned char)0x04)
#define SCCM_TX ((unsigned char)0x02)
#define SCCM_RX ((unsigned char)0x01)
typedef struct scc_param {
ushort scc_rbase; /* Rx Buffer descriptor base address */
ushort scc_tbase; /* Tx Buffer descriptor base address */
u_char scc_rfcr; /* Rx function code */
u_char scc_tfcr; /* Tx function code */
ushort scc_mrblr; /* Max receive buffer length */
uint scc_rstate; /* Internal */
uint scc_idp; /* Internal */
ushort scc_rbptr; /* Internal */
ushort scc_ibc; /* Internal */
uint scc_rxtmp; /* Internal */
uint scc_tstate; /* Internal */
uint scc_tdp; /* Internal */
ushort scc_tbptr; /* Internal */
ushort scc_tbc; /* Internal */
uint scc_txtmp; /* Internal */
uint scc_rcrc; /* Internal */
uint scc_tcrc; /* Internal */
} sccp_t;
/* CPM Ethernet through SCC1.
*/
typedef struct scc_enet {
sccp_t sen_genscc;
uint sen_cpres; /* Preset CRC */
uint sen_cmask; /* Constant mask for CRC */
uint sen_crcec; /* CRC Error counter */
uint sen_alec; /* alignment error counter */
uint sen_disfc; /* discard frame counter */
ushort sen_pads; /* Tx short frame pad character */
ushort sen_retlim; /* Retry limit threshold */
ushort sen_retcnt; /* Retry limit counter */
ushort sen_maxflr; /* maximum frame length register */
ushort sen_minflr; /* minimum frame length register */
ushort sen_maxd1; /* maximum DMA1 length */
ushort sen_maxd2; /* maximum DMA2 length */
ushort sen_maxd; /* Rx max DMA */
ushort sen_dmacnt; /* Rx DMA counter */
ushort sen_maxb; /* Max BD byte count */
ushort sen_gaddr1; /* Group address filter */
ushort sen_gaddr2;
ushort sen_gaddr3;
ushort sen_gaddr4;
uint sen_tbuf0data0; /* Save area 0 - current frame */
uint sen_tbuf0data1; /* Save area 1 - current frame */
uint sen_tbuf0rba; /* Internal */
uint sen_tbuf0crc; /* Internal */
ushort sen_tbuf0bcnt; /* Internal */
ushort sen_paddrh; /* physical address (MSB) */
ushort sen_paddrm;
ushort sen_paddrl; /* physical address (LSB) */
ushort sen_pper; /* persistence */
ushort sen_rfbdptr; /* Rx first BD pointer */
ushort sen_tfbdptr; /* Tx first BD pointer */
ushort sen_tlbdptr; /* Tx last BD pointer */
uint sen_tbuf1data0; /* Save area 0 - current frame */
uint sen_tbuf1data1; /* Save area 1 - current frame */
uint sen_tbuf1rba; /* Internal */
uint sen_tbuf1crc; /* Internal */
ushort sen_tbuf1bcnt; /* Internal */
ushort sen_txlen; /* Tx Frame length counter */
ushort sen_iaddr1; /* Individual address filter */
ushort sen_iaddr2;
ushort sen_iaddr3;
ushort sen_iaddr4;
ushort sen_boffcnt; /* Backoff counter */
/* NOTE: Some versions of the manual have the following items
* incorrectly documented. Below is the proper order.
*/
ushort sen_taddrh; /* temp address (MSB) */
ushort sen_taddrm;
ushort sen_taddrl; /* temp address (LSB) */
} scc_enet_t;
/* SCC Event register as used by Ethernet.
*/
#define SCCE_ENET_GRA ((ushort)0x0080) /* Graceful stop complete */
#define SCCE_ENET_TXE ((ushort)0x0010) /* Transmit Error */
#define SCCE_ENET_RXF ((ushort)0x0008) /* Full frame received */
#define SCCE_ENET_BSY ((ushort)0x0004) /* All incoming buffers full */
#define SCCE_ENET_TXB ((ushort)0x0002) /* A buffer was transmitted */
#define SCCE_ENET_RXB ((ushort)0x0001) /* A buffer was received */
/* SCC Mode Register (PSMR) as used by Ethernet.
*/
#define SCC_PSMR_HBC ((ushort)0x8000) /* Enable heartbeat */
#define SCC_PSMR_FC ((ushort)0x4000) /* Force collision */
#define SCC_PSMR_RSH ((ushort)0x2000) /* Receive short frames */
#define SCC_PSMR_IAM ((ushort)0x1000) /* Check individual hash */
#define SCC_PSMR_ENCRC ((ushort)0x0800) /* Ethernet CRC mode */
#define SCC_PSMR_PRO ((ushort)0x0200) /* Promiscuous mode */
#define SCC_PSMR_BRO ((ushort)0x0100) /* Catch broadcast pkts */
#define SCC_PSMR_SBT ((ushort)0x0080) /* Special backoff timer */
#define SCC_PSMR_LPB ((ushort)0x0040) /* Set Loopback mode */
#define SCC_PSMR_SIP ((ushort)0x0020) /* Sample Input Pins */
#define SCC_PSMR_LCW ((ushort)0x0010) /* Late collision window */
#define SCC_PSMR_NIB22 ((ushort)0x000a) /* Start frame search */
#define SCC_PSMR_FDE ((ushort)0x0001) /* Full duplex enable */
/* Buffer descriptor control/status used by Ethernet receive.
* Common to SCC and FCC.
*/
#define BD_ENET_RX_EMPTY ((ushort)0x8000)
#define BD_ENET_RX_WRAP ((ushort)0x2000)
#define BD_ENET_RX_INTR ((ushort)0x1000)
#define BD_ENET_RX_LAST ((ushort)0x0800)
#define BD_ENET_RX_FIRST ((ushort)0x0400)
#define BD_ENET_RX_MISS ((ushort)0x0100)
#define BD_ENET_RX_BC ((ushort)0x0080) /* FCC Only */
#define BD_ENET_RX_MC ((ushort)0x0040) /* FCC Only */
#define BD_ENET_RX_LG ((ushort)0x0020)
#define BD_ENET_RX_NO ((ushort)0x0010)
#define BD_ENET_RX_SH ((ushort)0x0008)
#define BD_ENET_RX_CR ((ushort)0x0004)
#define BD_ENET_RX_OV ((ushort)0x0002)
#define BD_ENET_RX_CL ((ushort)0x0001)
#define BD_ENET_RX_STATS ((ushort)0x01ff) /* All status bits */
/* Buffer descriptor control/status used by Ethernet transmit.
* Common to SCC and FCC.
*/
#define BD_ENET_TX_READY ((ushort)0x8000)
#define BD_ENET_TX_PAD ((ushort)0x4000)
#define BD_ENET_TX_WRAP ((ushort)0x2000)
#define BD_ENET_TX_INTR ((ushort)0x1000)
#define BD_ENET_TX_LAST ((ushort)0x0800)
#define BD_ENET_TX_TC ((ushort)0x0400)
#define BD_ENET_TX_DEF ((ushort)0x0200)
#define BD_ENET_TX_HB ((ushort)0x0100)
#define BD_ENET_TX_LC ((ushort)0x0080)
#define BD_ENET_TX_RL ((ushort)0x0040)
#define BD_ENET_TX_RCMASK ((ushort)0x003c)
#define BD_ENET_TX_UN ((ushort)0x0002)
#define BD_ENET_TX_CSL ((ushort)0x0001)
#define BD_ENET_TX_STATS ((ushort)0x03ff) /* All status bits */
/* SCC as UART
*/
typedef struct scc_uart {
sccp_t scc_genscc;
uint scc_res1; /* Reserved */
uint scc_res2; /* Reserved */
ushort scc_maxidl; /* Maximum idle chars */
ushort scc_idlc; /* temp idle counter */
ushort scc_brkcr; /* Break count register */
ushort scc_parec; /* receive parity error counter */
ushort scc_frmec; /* receive framing error counter */
ushort scc_nosec; /* receive noise counter */
ushort scc_brkec; /* receive break condition counter */
ushort scc_brkln; /* last received break length */
ushort scc_uaddr1; /* UART address character 1 */
ushort scc_uaddr2; /* UART address character 2 */
ushort scc_rtemp; /* Temp storage */
ushort scc_toseq; /* Transmit out of sequence char */
ushort scc_char1; /* control character 1 */
ushort scc_char2; /* control character 2 */
ushort scc_char3; /* control character 3 */
ushort scc_char4; /* control character 4 */
ushort scc_char5; /* control character 5 */
ushort scc_char6; /* control character 6 */
ushort scc_char7; /* control character 7 */
ushort scc_char8; /* control character 8 */
ushort scc_rccm; /* receive control character mask */
ushort scc_rccr; /* receive control character register */
ushort scc_rlbc; /* receive last break character */
} scc_uart_t;
/* SCC Event and Mask registers when it is used as a UART.
*/
#define UART_SCCM_GLR ((ushort)0x1000)
#define UART_SCCM_GLT ((ushort)0x0800)
#define UART_SCCM_AB ((ushort)0x0200)
#define UART_SCCM_IDL ((ushort)0x0100)
#define UART_SCCM_GRA ((ushort)0x0080)
#define UART_SCCM_BRKE ((ushort)0x0040)
#define UART_SCCM_BRKS ((ushort)0x0020)
#define UART_SCCM_CCR ((ushort)0x0008)
#define UART_SCCM_BSY ((ushort)0x0004)
#define UART_SCCM_TX ((ushort)0x0002)
#define UART_SCCM_RX ((ushort)0x0001)
/* The SCC PSMR when used as a UART.
*/
#define SCU_PSMR_FLC ((ushort)0x8000)
#define SCU_PSMR_SL ((ushort)0x4000)
#define SCU_PSMR_CL ((ushort)0x3000)
#define SCU_PSMR_UM ((ushort)0x0c00)
#define SCU_PSMR_FRZ ((ushort)0x0200)
#define SCU_PSMR_RZS ((ushort)0x0100)
#define SCU_PSMR_SYN ((ushort)0x0080)
#define SCU_PSMR_DRT ((ushort)0x0040)
#define SCU_PSMR_PEN ((ushort)0x0010)
#define SCU_PSMR_RPM ((ushort)0x000c)
#define SCU_PSMR_REVP ((ushort)0x0008)
#define SCU_PSMR_TPM ((ushort)0x0003)
#define SCU_PSMR_TEVP ((ushort)0x0003)
/* CPM Transparent mode SCC.
*/
typedef struct scc_trans {
sccp_t st_genscc;
uint st_cpres; /* Preset CRC */
uint st_cmask; /* Constant mask for CRC */
} scc_trans_t;
#define BD_SCC_TX_LAST ((ushort)0x0800)
/* How about some FCCs.....
*/
#define FCC_GFMR_DIAG_NORM ((uint)0x00000000)
#define FCC_GFMR_DIAG_LE ((uint)0x40000000)
#define FCC_GFMR_DIAG_AE ((uint)0x80000000)
#define FCC_GFMR_DIAG_ALE ((uint)0xc0000000)
#define FCC_GFMR_TCI ((uint)0x20000000)
#define FCC_GFMR_TRX ((uint)0x10000000)
#define FCC_GFMR_TTX ((uint)0x08000000)
#define FCC_GFMR_TTX ((uint)0x08000000)
#define FCC_GFMR_CDP ((uint)0x04000000)
#define FCC_GFMR_CTSP ((uint)0x02000000)
#define FCC_GFMR_CDS ((uint)0x01000000)
#define FCC_GFMR_CTSS ((uint)0x00800000)
#define FCC_GFMR_SYNL_NONE ((uint)0x00000000)
#define FCC_GFMR_SYNL_AUTO ((uint)0x00004000)
#define FCC_GFMR_SYNL_8 ((uint)0x00008000)
#define FCC_GFMR_SYNL_16 ((uint)0x0000c000)
#define FCC_GFMR_RTSM ((uint)0x00002000)
#define FCC_GFMR_RENC_NRZ ((uint)0x00000000)
#define FCC_GFMR_RENC_NRZI ((uint)0x00000800)
#define FCC_GFMR_REVD ((uint)0x00000400)
#define FCC_GFMR_TENC_NRZ ((uint)0x00000000)
#define FCC_GFMR_TENC_NRZI ((uint)0x00000100)
#define FCC_GFMR_TCRC_16 ((uint)0x00000000)
#define FCC_GFMR_TCRC_32 ((uint)0x00000080)
#define FCC_GFMR_ENR ((uint)0x00000020)
#define FCC_GFMR_ENT ((uint)0x00000010)
#define FCC_GFMR_MODE_ENET ((uint)0x0000000c)
#define FCC_GFMR_MODE_ATM ((uint)0x0000000a)
#define FCC_GFMR_MODE_HDLC ((uint)0x00000000)
/* Generic FCC parameter ram.
*/
typedef struct fcc_param {
ushort fcc_riptr; /* Rx Internal temp pointer */
ushort fcc_tiptr; /* Tx Internal temp pointer */
ushort fcc_res1;
ushort fcc_mrblr; /* Max receive buffer length, mod 32 bytes */
uint fcc_rstate; /* Upper byte is Func code, must be set */
uint fcc_rbase; /* Receive BD base */
ushort fcc_rbdstat; /* RxBD status */
ushort fcc_rbdlen; /* RxBD down counter */
uint fcc_rdptr; /* RxBD internal data pointer */
uint fcc_tstate; /* Upper byte is Func code, must be set */
uint fcc_tbase; /* Transmit BD base */
ushort fcc_tbdstat; /* TxBD status */
ushort fcc_tbdlen; /* TxBD down counter */
uint fcc_tdptr; /* TxBD internal data pointer */
uint fcc_rbptr; /* Rx BD Internal buf pointer */
uint fcc_tbptr; /* Tx BD Internal buf pointer */
uint fcc_rcrc; /* Rx temp CRC */
uint fcc_res2;
uint fcc_tcrc; /* Tx temp CRC */
} fccp_t;
/* Ethernet controller through FCC.
*/
typedef struct fcc_enet {
fccp_t fen_genfcc;
uint fen_statbuf; /* Internal status buffer */
uint fen_camptr; /* CAM address */
uint fen_cmask; /* Constant mask for CRC */
uint fen_cpres; /* Preset CRC */
uint fen_crcec; /* CRC Error counter */
uint fen_alec; /* alignment error counter */
uint fen_disfc; /* discard frame counter */
ushort fen_retlim; /* Retry limit */
ushort fen_retcnt; /* Retry counter */
ushort fen_pper; /* Persistence */
ushort fen_boffcnt; /* backoff counter */
uint fen_gaddrh; /* Group address filter, high 32-bits */
uint fen_gaddrl; /* Group address filter, low 32-bits */
ushort fen_tfcstat; /* out of sequence TxBD */
ushort fen_tfclen;
uint fen_tfcptr;
ushort fen_mflr; /* Maximum frame length (1518) */
ushort fen_paddrh; /* MAC address */
ushort fen_paddrm;
ushort fen_paddrl;
ushort fen_ibdcount; /* Internal BD counter */
ushort fen_idbstart; /* Internal BD start pointer */
ushort fen_ibdend; /* Internal BD end pointer */
ushort fen_txlen; /* Internal Tx frame length counter */
uint fen_ibdbase[8]; /* Internal use */
uint fen_iaddrh; /* Individual address filter */
uint fen_iaddrl;
ushort fen_minflr; /* Minimum frame length (64) */
ushort fen_taddrh; /* Filter transfer MAC address */
ushort fen_taddrm;
ushort fen_taddrl;
ushort fen_padptr; /* Pointer to pad byte buffer */
ushort fen_cftype; /* control frame type */
ushort fen_cfrange; /* control frame range */
ushort fen_maxb; /* maximum BD count */
ushort fen_maxd1; /* Max DMA1 length (1520) */
ushort fen_maxd2; /* Max DMA2 length (1520) */
ushort fen_maxd; /* internal max DMA count */
ushort fen_dmacnt; /* internal DMA counter */
uint fen_octc; /* Total octect counter */
uint fen_colc; /* Total collision counter */
uint fen_broc; /* Total broadcast packet counter */
uint fen_mulc; /* Total multicast packet count */
uint fen_uspc; /* Total packets < 64 bytes */
uint fen_frgc; /* Total packets < 64 bytes with errors */
uint fen_ospc; /* Total packets > 1518 */
uint fen_jbrc; /* Total packets > 1518 with errors */
uint fen_p64c; /* Total packets == 64 bytes */
uint fen_p65c; /* Total packets 64 < bytes <= 127 */
uint fen_p128c; /* Total packets 127 < bytes <= 255 */
uint fen_p256c; /* Total packets 256 < bytes <= 511 */
uint fen_p512c; /* Total packets 512 < bytes <= 1023 */
uint fen_p1024c; /* Total packets 1024 < bytes <= 1518 */
uint fen_cambuf; /* Internal CAM buffer poiner */
ushort fen_rfthr; /* Received frames threshold */
ushort fen_rfcnt; /* Received frames count */
} fcc_enet_t;
/* FCC Event/Mask register as used by Ethernet.
*/
#define FCC_ENET_GRA ((ushort)0x0080) /* Graceful stop complete */
#define FCC_ENET_RXC ((ushort)0x0040) /* Control Frame Received */
#define FCC_ENET_TXC ((ushort)0x0020) /* Out of seq. Tx sent */
#define FCC_ENET_TXE ((ushort)0x0010) /* Transmit Error */
#define FCC_ENET_RXF ((ushort)0x0008) /* Full frame received */
#define FCC_ENET_BSY ((ushort)0x0004) /* Busy. Rx Frame dropped */
#define FCC_ENET_TXB ((ushort)0x0002) /* A buffer was transmitted */
#define FCC_ENET_RXB ((ushort)0x0001) /* A buffer was received */
/* FCC Mode Register (FPSMR) as used by Ethernet.
*/
#define FCC_PSMR_HBC ((uint)0x80000000) /* Enable heartbeat */
#define FCC_PSMR_FC ((uint)0x40000000) /* Force Collision */
#define FCC_PSMR_SBT ((uint)0x20000000) /* Stop backoff timer */
#define FCC_PSMR_LPB ((uint)0x10000000) /* Local protect. 1 = FDX */
#define FCC_PSMR_LCW ((uint)0x08000000) /* Late collision select */
#define FCC_PSMR_FDE ((uint)0x04000000) /* Full Duplex Enable */
#define FCC_PSMR_MON ((uint)0x02000000) /* RMON Enable */
#define FCC_PSMR_PRO ((uint)0x00400000) /* Promiscuous Enable */
#define FCC_PSMR_FCE ((uint)0x00200000) /* Flow Control Enable */
#define FCC_PSMR_RSH ((uint)0x00100000) /* Receive Short Frames */
#define FCC_PSMR_CAM ((uint)0x00000400) /* CAM enable */
#define FCC_PSMR_BRO ((uint)0x00000200) /* Broadcast pkt discard */
#define FCC_PSMR_ENCRC ((uint)0x00000080) /* Use 32-bit CRC */
/* IIC parameter RAM.
*/
typedef struct iic {
ushort iic_rbase; /* Rx Buffer descriptor base address */
ushort iic_tbase; /* Tx Buffer descriptor base address */
u_char iic_rfcr; /* Rx function code */
u_char iic_tfcr; /* Tx function code */
ushort iic_mrblr; /* Max receive buffer length */
uint iic_rstate; /* Internal */
uint iic_rdp; /* Internal */
ushort iic_rbptr; /* Internal */
ushort iic_rbc; /* Internal */
uint iic_rxtmp; /* Internal */
uint iic_tstate; /* Internal */
uint iic_tdp; /* Internal */
ushort iic_tbptr; /* Internal */
ushort iic_tbc; /* Internal */
uint iic_txtmp; /* Internal */
} iic_t;
/* SPI parameter RAM.
*/
typedef struct spi {
ushort spi_rbase; /* Rx Buffer descriptor base address */
ushort spi_tbase; /* Tx Buffer descriptor base address */
u_char spi_rfcr; /* Rx function code */
u_char spi_tfcr; /* Tx function code */
ushort spi_mrblr; /* Max receive buffer length */
uint spi_rstate; /* Internal */
uint spi_rdp; /* Internal */
ushort spi_rbptr; /* Internal */
ushort spi_rbc; /* Internal */
uint spi_rxtmp; /* Internal */
uint spi_tstate; /* Internal */
uint spi_tdp; /* Internal */
ushort spi_tbptr; /* Internal */
ushort spi_tbc; /* Internal */
uint spi_txtmp; /* Internal */
uint spi_res; /* Tx temp. */
uint spi_res1[4]; /* SDMA temp. */
} spi_t;
/* SPI Mode register.
*/
#define SPMODE_LOOP ((ushort)0x4000) /* Loopback */
#define SPMODE_CI ((ushort)0x2000) /* Clock Invert */
#define SPMODE_CP ((ushort)0x1000) /* Clock Phase */
#define SPMODE_DIV16 ((ushort)0x0800) /* BRG/16 mode */
#define SPMODE_REV ((ushort)0x0400) /* Reversed Data */
#define SPMODE_MSTR ((ushort)0x0200) /* SPI Master */
#define SPMODE_EN ((ushort)0x0100) /* Enable */
#define SPMODE_LENMSK ((ushort)0x00f0) /* character length */
#define SPMODE_PMMSK ((ushort)0x000f) /* prescale modulus */
#define SPMODE_LEN(x) ((((x)-1)&0xF)<<4)
#define SPMODE_PM(x) ((x) &0xF)
#define SPI_EB ((u_char)0x10) /* big endian byte order */
#define BD_IIC_START ((ushort)0x0400)
#endif /* __CPM_82XX__ */

583
post/uart.c
Unescape View File

@ -0,0 +1,583 @@
/*
* (C) Copyright 2002
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
/*
* UART test
*
* The Serial Management Controllers (SMC) and the Serial Communication
* Controllers (SCC) listed in ctlr_list array below are tested in
* the loopback UART mode.
* The controllers are configured accordingly and several characters
* are transmitted. The configurable test parameters are:
* MIN_PACKET_LENGTH - minimum size of packet to transmit
* MAX_PACKET_LENGTH - maximum size of packet to transmit
* TEST_NUM - number of tests
*/
#ifdef CONFIG_POST
#include <post.h>
#if defined(CONFIG_8xx)
#include <commproc.h>
#elif defined(CONFIG_MPC8260)
#include <asm/cpm_8260.h>
#else
#error "Apparently a bad configuration, please fix."
#endif
#include <command.h>
#include <net.h>
#if CONFIG_POST & CFG_POST_UART
#define CTLR_SMC 0
#define CTLR_SCC 1
/* The list of controllers to test */
#if defined(CONFIG_MPC823)
static int ctlr_list[][2] =
{ {CTLR_SMC, 0}, {CTLR_SMC, 1}, {CTLR_SCC, 1} };
#else
static int ctlr_list[][2] = { };
#endif
#define CTRL_LIST_SIZE (sizeof(ctlr_list) / sizeof(ctlr_list[0]))
static struct {
void (*init) (int index);
void (*putc) (int index, const char c);
int (*getc) (int index);
} ctlr_proc[2];
static char *ctlr_name[2] = { "SMC", "SCC" };
static int used_by_uart[2] = { -1, -1 };
static int used_by_ether[2] = { -1, -1 };
static int proff_smc[] = { PROFF_SMC1, PROFF_SMC2 };
static int proff_scc[] =
{ PROFF_SCC1, PROFF_SCC2, PROFF_SCC3, PROFF_SCC4 };
/*
* SMC callbacks
*/
static void smc_init (int smc_index)
{
DECLARE_GLOBAL_DATA_PTR;
static int cpm_cr_ch[] = { CPM_CR_CH_SMC1, CPM_CR_CH_SMC2 };
volatile immap_t *im = (immap_t *) CFG_IMMR;
volatile smc_t *sp;
volatile smc_uart_t *up;
volatile cbd_t *tbdf, *rbdf;
volatile cpm8xx_t *cp = &(im->im_cpm);
uint dpaddr;
/* initialize pointers to SMC */
sp = (smc_t *) & (cp->cp_smc[smc_index]);
up = (smc_uart_t *) & cp->cp_dparam[proff_smc[smc_index]];
/* Disable transmitter/receiver.
*/
sp->smc_smcmr &= ~(SMCMR_REN | SMCMR_TEN);
/* Enable SDMA.
*/
im->im_siu_conf.sc_sdcr = 1;
/* clear error conditions */
#ifdef CFG_SDSR
im->im_sdma.sdma_sdsr = CFG_SDSR;
#else
im->im_sdma.sdma_sdsr = 0x83;
#endif
/* clear SDMA interrupt mask */
#ifdef CFG_SDMR
im->im_sdma.sdma_sdmr = CFG_SDMR;
#else
im->im_sdma.sdma_sdmr = 0x00;
#endif
#if defined(CONFIG_FADS)
/* Enable RS232 */
*((uint *) BCSR1) &=
~(smc_index == 1 ? BCSR1_RS232EN_1 : BCSR1_RS232EN_2);
#endif
#if defined(CONFIG_RPXLITE) || defined(CONFIG_RPXCLASSIC)
/* Enable Monitor Port Transceiver */
*((uchar *) BCSR0) |= BCSR0_ENMONXCVR;
#endif
/* Set the physical address of the host memory buffers in
* the buffer descriptors.
*/
#ifdef CFG_ALLOC_DPRAM
dpaddr = dpram_alloc_align (sizeof (cbd_t) * 2 + 2, 8);
#else
dpaddr = CPM_POST_BASE;
#endif
/* Allocate space for two buffer descriptors in the DP ram.
* For now, this address seems OK, but it may have to
* change with newer versions of the firmware.
* damm: allocating space after the two buffers for rx/tx data
*/
rbdf = (cbd_t *) & cp->cp_dpmem[dpaddr];
rbdf->cbd_bufaddr = (uint) (rbdf + 2);
rbdf->cbd_sc = 0;
tbdf = rbdf + 1;
tbdf->cbd_bufaddr = ((uint) (rbdf + 2)) + 1;
tbdf->cbd_sc = 0;
/* Set up the uart parameters in the parameter ram.
*/
up->smc_rbase = dpaddr;
up->smc_tbase = dpaddr + sizeof (cbd_t);
up->smc_rfcr = SMC_EB;
up->smc_tfcr = SMC_EB;
#if defined(CONFIG_MBX)
board_serial_init ();
#endif
/* Set UART mode, 8 bit, no parity, one stop.
* Enable receive and transmit.
* Set local loopback mode.
*/
sp->smc_smcmr = smcr_mk_clen (9) | SMCMR_SM_UART | (ushort) 0x0004;
/* Mask all interrupts and remove anything pending.
*/
sp->smc_smcm = 0;
sp->smc_smce = 0xff;
/* Set up the baud rate generator.
*/
cp->cp_simode = 0x00000000;
cp->cp_brgc1 =
(((gd->cpu_clk / 16 / gd->baudrate) -
1) << 1) | CPM_BRG_EN;
/* Make the first buffer the only buffer.
*/
tbdf->cbd_sc |= BD_SC_WRAP;
rbdf->cbd_sc |= BD_SC_EMPTY | BD_SC_WRAP;
/* Single character receive.
*/
up->smc_mrblr = 1;
up->smc_maxidl = 0;
/* Initialize Tx/Rx parameters.
*/
while (cp->cp_cpcr & CPM_CR_FLG) /* wait if cp is busy */
;
cp->cp_cpcr =
mk_cr_cmd (cpm_cr_ch[smc_index], CPM_CR_INIT_TRX) | CPM_CR_FLG;
while (cp->cp_cpcr & CPM_CR_FLG) /* wait if cp is busy */
;
/* Enable transmitter/receiver.
*/
sp->smc_smcmr |= SMCMR_REN | SMCMR_TEN;
}
static void smc_putc (int smc_index, const char c)
{
volatile cbd_t *tbdf;
volatile char *buf;
volatile smc_uart_t *up;
volatile immap_t *im = (immap_t *) CFG_IMMR;
volatile cpm8xx_t *cpmp = &(im->im_cpm);
up = (smc_uart_t *) & cpmp->cp_dparam[proff_smc[smc_index]];
tbdf = (cbd_t *) & cpmp->cp_dpmem[up->smc_tbase];
/* Wait for last character to go.
*/
buf = (char *) tbdf->cbd_bufaddr;
#if 0
__asm__ ("eieio");
while (tbdf->cbd_sc & BD_SC_READY)
__asm__ ("eieio");
#endif
*buf = c;
tbdf->cbd_datlen = 1;
tbdf->cbd_sc |= BD_SC_READY;
__asm__ ("eieio");
#if 1
while (tbdf->cbd_sc & BD_SC_READY)
__asm__ ("eieio");
#endif
}
static int smc_getc (int smc_index)
{
volatile cbd_t *rbdf;
volatile unsigned char *buf;
volatile smc_uart_t *up;
volatile immap_t *im = (immap_t *) CFG_IMMR;
volatile cpm8xx_t *cpmp = &(im->im_cpm);
unsigned char c;
int i;
up = (smc_uart_t *) & cpmp->cp_dparam[proff_smc[smc_index]];
rbdf = (cbd_t *) & cpmp->cp_dpmem[up->smc_rbase];
/* Wait for character to show up.
*/
buf = (unsigned char *) rbdf->cbd_bufaddr;
#if 0
while (rbdf->cbd_sc & BD_SC_EMPTY);
#else
for (i = 100; i > 0; i--) {
if (!(rbdf->cbd_sc & BD_SC_EMPTY))
break;
udelay (1000);
}
if (i == 0)
return -1;
#endif
c = *buf;
rbdf->cbd_sc |= BD_SC_EMPTY;
return (c);
}
/*
* SCC callbacks
*/
static void scc_init (int scc_index)
{
DECLARE_GLOBAL_DATA_PTR;
static int cpm_cr_ch[] = {
CPM_CR_CH_SCC1,
CPM_CR_CH_SCC2,
CPM_CR_CH_SCC3,
CPM_CR_CH_SCC4,
};
volatile immap_t *im = (immap_t *) CFG_IMMR;
volatile scc_t *sp;
volatile scc_uart_t *up;
volatile cbd_t *tbdf, *rbdf;
volatile cpm8xx_t *cp = &(im->im_cpm);
uint dpaddr;
/* initialize pointers to SCC */
sp = (scc_t *) & (cp->cp_scc[scc_index]);
up = (scc_uart_t *) & cp->cp_dparam[proff_scc[scc_index]];
/* Disable transmitter/receiver.
*/
sp->scc_gsmrl &= ~(SCC_GSMRL_ENR | SCC_GSMRL_ENT);
/* Allocate space for two buffer descriptors in the DP ram.
*/
#ifdef CFG_ALLOC_DPRAM
dpaddr = dpram_alloc_align (sizeof (cbd_t) * 2 + 2, 8);
#else
dpaddr = CPM_POST_BASE;
#endif
/* Enable SDMA.
*/
im->im_siu_conf.sc_sdcr = 0x0001;
/* Set the physical address of the host memory buffers in
* the buffer descriptors.
*/
rbdf = (cbd_t *) & cp->cp_dpmem[dpaddr];
rbdf->cbd_bufaddr = (uint) (rbdf + 2);
rbdf->cbd_sc = 0;
tbdf = rbdf + 1;
tbdf->cbd_bufaddr = ((uint) (rbdf + 2)) + 1;
tbdf->cbd_sc = 0;
/* Set up the baud rate generator.
*/
cp->cp_sicr &= ~(0x000000FF << (8 * scc_index));
/* no |= needed, since BRG1 is 000 */
cp->cp_brgc1 =
(((gd->cpu_clk / 16 / gd->baudrate) -
1) << 1) | CPM_BRG_EN;
/* Set up the uart parameters in the parameter ram.
*/
up->scc_genscc.scc_rbase = dpaddr;
up->scc_genscc.scc_tbase = dpaddr + sizeof (cbd_t);
/* Initialize Tx/Rx parameters.
*/
while (cp->cp_cpcr & CPM_CR_FLG) /* wait if cp is busy */
;
cp->cp_cpcr =
mk_cr_cmd (cpm_cr_ch[scc_index], CPM_CR_INIT_TRX) | CPM_CR_FLG;
while (cp->cp_cpcr & CPM_CR_FLG) /* wait if cp is busy */
;
up->scc_genscc.scc_rfcr = SCC_EB | 0x05;
up->scc_genscc.scc_tfcr = SCC_EB | 0x05;
up->scc_genscc.scc_mrblr = 1; /* Single character receive */
up->scc_maxidl = 0; /* disable max idle */
up->scc_brkcr = 1; /* send one break character on stop TX */
up->scc_parec = 0;
up->scc_frmec = 0;
up->scc_nosec = 0;
up->scc_brkec = 0;
up->scc_uaddr1 = 0;
up->scc_uaddr2 = 0;
up->scc_toseq = 0;
up->scc_char1 = 0x8000;
up->scc_char2 = 0x8000;
up->scc_char3 = 0x8000;
up->scc_char4 = 0x8000;
up->scc_char5 = 0x8000;
up->scc_char6 = 0x8000;
up->scc_char7 = 0x8000;
up->scc_char8 = 0x8000;
up->scc_rccm = 0xc0ff;
/* Set low latency / small fifo.
*/
sp->scc_gsmrh = SCC_GSMRH_RFW;
/* Set UART mode
*/
sp->scc_gsmrl &= ~0xF;
sp->scc_gsmrl |= SCC_GSMRL_MODE_UART;
/* Set local loopback mode.
*/
sp->scc_gsmrl &= ~SCC_GSMRL_DIAG_LE;
sp->scc_gsmrl |= SCC_GSMRL_DIAG_LOOP;
/* Set clock divider 16 on Tx and Rx
*/
sp->scc_gsmrl |= (SCC_GSMRL_TDCR_16 | SCC_GSMRL_RDCR_16);
sp->scc_psmr |= SCU_PSMR_CL;
/* Mask all interrupts and remove anything pending.
*/
sp->scc_sccm = 0;
sp->scc_scce = 0xffff;
sp->scc_dsr = 0x7e7e;
sp->scc_psmr = 0x3000;
/* Make the first buffer the only buffer.
*/
tbdf->cbd_sc |= BD_SC_WRAP;
rbdf->cbd_sc |= BD_SC_EMPTY | BD_SC_WRAP;
/* Enable transmitter/receiver.
*/
sp->scc_gsmrl |= (SCC_GSMRL_ENR | SCC_GSMRL_ENT);
}
static void scc_putc (int scc_index, const char c)
{
volatile cbd_t *tbdf;
volatile char *buf;
volatile scc_uart_t *up;
volatile immap_t *im = (immap_t *) CFG_IMMR;
volatile cpm8xx_t *cpmp = &(im->im_cpm);
up = (scc_uart_t *) & cpmp->cp_dparam[proff_scc[scc_index]];
tbdf = (cbd_t *) & cpmp->cp_dpmem[up->scc_genscc.scc_tbase];
/* Wait for last character to go.
*/
buf = (char *) tbdf->cbd_bufaddr;
#if 0
__asm__ ("eieio");
while (tbdf->cbd_sc & BD_SC_READY)
__asm__ ("eieio");
#endif
*buf = c;
tbdf->cbd_datlen = 1;
tbdf->cbd_sc |= BD_SC_READY;
__asm__ ("eieio");
#if 1
while (tbdf->cbd_sc & BD_SC_READY)
__asm__ ("eieio");
#endif
}
static int scc_getc (int scc_index)
{
volatile cbd_t *rbdf;
volatile unsigned char *buf;
volatile scc_uart_t *up;
volatile immap_t *im = (immap_t *) CFG_IMMR;
volatile cpm8xx_t *cpmp = &(im->im_cpm);
unsigned char c;
int i;
up = (scc_uart_t *) & cpmp->cp_dparam[proff_scc[scc_index]];
rbdf = (cbd_t *) & cpmp->cp_dpmem[up->scc_genscc.scc_rbase];
/* Wait for character to show up.
*/
buf = (unsigned char *) rbdf->cbd_bufaddr;
#if 0
while (rbdf->cbd_sc & BD_SC_EMPTY);
#else
for (i = 100; i > 0; i--) {
if (!(rbdf->cbd_sc & BD_SC_EMPTY))
break;
udelay (1000);
}
if (i == 0)
return -1;
#endif
c = *buf;
rbdf->cbd_sc |= BD_SC_EMPTY;
return (c);
}
/*
* Test routines
*/
static int test_ctlr (int ctlr, int index)
{
int res = -1;
char test_str[] = "*** UART Test String ***\r\n";
int i;
#if !defined(CONFIG_8xx_CONS_NONE)
if (used_by_uart[ctlr] == index) {
while (ctlr_proc[ctlr].getc (index) != -1);
}
#endif
ctlr_proc[ctlr].init (index);
for (i = 0; i < sizeof (test_str) - 1; i++) {
ctlr_proc[ctlr].putc (index, test_str[i]);
if (ctlr_proc[ctlr].getc (index) != test_str[i])
goto Done;
}
res = 0;
Done:
#if !defined(CONFIG_8xx_CONS_NONE)
if (used_by_uart[ctlr] == index) {
serial_init ();
}
#endif
#if defined(SCC_ENET)
if (used_by_ether[ctlr] == index) {
DECLARE_GLOBAL_DATA_PTR;
eth_init (gd->bd);
}
#endif
if (res != 0) {
post_log ("uart %s%d test failed\n",
ctlr_name[ctlr], index + 1);
}
return res;
}
int uart_post_test (int flags)
{
int res = 0;
int i;
#if defined(CONFIG_8xx_CONS_SMC1)
used_by_uart[CTLR_SMC] = 0;
#elif defined(CONFIG_8xx_CONS_SMC2)
used_by_uart[CTLR_SMC] = 1;
#elif defined(CONFIG_8xx_CONS_SCC1)
used_by_uart[CTLR_SCC] = 0;
#elif defined(CONFIG_8xx_CONS_SCC2)
used_by_uart[CTLR_SCC] = 1;
#elif defined(CONFIG_8xx_CONS_SCC3)
used_by_uart[CTLR_SCC] = 2;
#elif defined(CONFIG_8xx_CONS_SCC4)
used_by_uart[CTLR_SCC] = 3;
#endif
#if defined(SCC_ENET)
used_by_ether[CTLR_SCC] = SCC_ENET;
#endif
ctlr_proc[CTLR_SMC].init = smc_init;
ctlr_proc[CTLR_SMC].putc = smc_putc;
ctlr_proc[CTLR_SMC].getc = smc_getc;
ctlr_proc[CTLR_SCC].init = scc_init;
ctlr_proc[CTLR_SCC].putc = scc_putc;
ctlr_proc[CTLR_SCC].getc = scc_getc;
for (i = 0; i < CTRL_LIST_SIZE; i++) {
if (test_ctlr (ctlr_list[i][0], ctlr_list[i][1]) != 0) {
res = -1;
}
}
return res;
}
#endif /* CONFIG_POST & CFG_POST_UART */
#endif /* CONFIG_POST */
Write Preview
Loading…
Cancel
Save