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upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support
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u-boot/board/spc1920/hpi.c

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/*
* (C) Copyright 2006
* Markus Klotzbuecher, DENX Software Engineering, mk@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
*/
/*
* Host Port Interface (HPI)
*/
/* debug levels:
* 0 : errors
* 1 : usefull info
* 2 : lots of info
* 3 : noisy
*/
#define DEBUG 0
#include <config.h>
#include <common.h>
#include <mpc8xx.h>
#include "pld.h"
#include "hpi.h"
#define _NOT_USED_ 0xFFFFFFFF
/* original table:
* - inserted loops to achieve long CS low and high Periods (~217ns)
* - move cs high 2/4 to the right
*/
const uint dsp_table_slow[] =
{
/* single read (offset 0x00 in upm ram) */
0x8fffdc04, 0x0fffdc84, 0x0fffdc84, 0x0fffdc00,
0x3fffdc04, 0xffffdc84, 0xffffdc84, 0xffffdc05,
/* burst read (offset 0x08 in upm ram) */
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
/* single write (offset 0x18 in upm ram) */
0x8fffd004, 0x0fffd084, 0x0fffd084, 0x3fffd000,
0xffffd084, 0xffffd084, 0xffffd005, _NOT_USED_,
/* burst write (offset 0x20 in upm ram) */
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
/* refresh (offset 0x30 in upm ram) */
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
/* exception (offset 0x3C in upm ram) */
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
};
/* dsp hpi upm ram table
* works fine for noninc access, failes on incremental.
* - removed first word
*/
const uint dsp_table_fast[] =
{
/* single read (offset 0x00 in upm ram) */
0x8fffdc04, 0x0fffdc04, 0x0fffdc00, 0x3fffdc04,
0xffffdc05, _NOT_USED_, _NOT_USED_, _NOT_USED_,
/* burst read (offset 0x08 in upm ram) */
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
/* single write (offset 0x18 in upm ram) */
0x8fffd004, 0x0fffd004, 0x3fffd000, 0xffffd005,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
/* burst write (offset 0x20 in upm ram) */
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
/* refresh (offset 0x30 in upm ram) */
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
/* exception (offset 0x3C in upm ram) */
_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
};
#ifdef CONFIG_SPC1920_HPI_TEST
#undef HPI_TEST_OSZI
#define HPI_TEST_CHUNKSIZE 0x1000
#define HPI_TEST_PATTERN 0x00000000
#define HPI_TEST_START 0x0
#define HPI_TEST_END 0x30000
#define TINY_AUTOINC_DATA_SIZE 16 /* 32bit words */
#define TINY_AUTOINC_BASE_ADDR 0x0
static int hpi_activate(void);
static void hpi_inactivate(void);
static void dsp_reset(void);
static int hpi_write_inc(u32 addr, u32 *data, u32 count);
static int hpi_read_inc(u32 addr, u32 *buf, u32 count);
static int hpi_write_noinc(u32 addr, u32 data);
static u32 hpi_read_noinc(u32 addr);
int hpi_test(void);
static int hpi_write_addr_test(u32 addr);
static int hpi_read_write_test(u32 addr, u32 data);
static int hpi_tiny_autoinc_test(void);
#endif /* CONFIG_SPC1920_HPI_TEST */
/* init the host port interface on UPMA */
int hpi_init(void)
{
volatile immap_t *immr = (immap_t *) CFG_IMMR;
volatile memctl8xx_t *memctl = &immr->im_memctl;
volatile spc1920_pld_t *pld = (spc1920_pld_t *) CFG_SPC1920_PLD_BASE;
upmconfig(UPMA, (uint *)dsp_table_slow, sizeof(dsp_table_slow)/sizeof(uint));
udelay(100);
memctl->memc_mamr = CFG_MAMR;
memctl->memc_or3 = CFG_OR3;
memctl->memc_br3 = CFG_BR3;
/* reset dsp */
dsp_reset();
/* activate hpi switch*/
pld->dsp_hpi_on = 0x1;
udelay(100);
return 0;
}
#ifdef CONFIG_SPC1920_HPI_TEST
/* activate the Host Port interface */
static int hpi_activate(void)
{
volatile spc1920_pld_t *pld = (spc1920_pld_t *) CFG_SPC1920_PLD_BASE;
/* turn on hpi */
pld->dsp_hpi_on = 0x1;
udelay(5);
/* turn on the power EN_DSP_POWER high*/
/* currently always on TBD */
/* setup hpi control register */
HPI_HPIC_1 = (u16) 0x0008;
HPI_HPIC_2 = (u16) 0x0008;
udelay(100);
return 0;
}
/* turn off the host port interface */
static void hpi_inactivate(void)
{
volatile spc1920_pld_t *pld = (spc1920_pld_t *) CFG_SPC1920_PLD_BASE;
/* deactivate hpi */
pld->dsp_hpi_on = 0x0;
/* reset the dsp */
/* pld->dsp_reset = 0x0; */
/* turn off the power EN_DSP_POWER# high*/
/* currently always on TBD */
}
/* reset the DSP */
static void dsp_reset(void)
{
volatile spc1920_pld_t *pld = (spc1920_pld_t *) CFG_SPC1920_PLD_BASE;
pld->dsp_reset = 0x1;
pld->dsp_hpi_on = 0x0;
udelay(300000);
pld->dsp_reset = 0x0;
pld->dsp_hpi_on = 0x1;
}
/* write using autoinc (count is number of 32bit words) */
static int hpi_write_inc(u32 addr, u32 *data, u32 count)
{
int i;
u16 addr1, addr2;
addr1 = (u16) ((addr >> 16) & 0xffff); /* First HW is most significant */
addr2 = (u16) (addr & 0xffff);
/* write address */
HPI_HPIA_1 = addr1;
HPI_HPIA_2 = addr2;
debugX(4, "writing from data=0x%x to 0x%x\n", data, (data+count));
for(i=0; i<count; i++) {
HPI_HPID_INC_1 = (u16) ((data[i] >> 16) & 0xffff);
HPI_HPID_INC_2 = (u16) (data[i] & 0xffff);
debugX(4, "hpi_write_inc: data1=0x%x, data2=0x%x\n",
(u16) ((data[i] >> 16) & 0xffff),
(u16) (data[i] & 0xffff));
}
#if 0
while(data_ptr < (u16*) (data + count)) {
HPI_HPID_INC_1 = *(data_ptr++);
HPI_HPID_INC_2 = *(data_ptr++);
}
#endif
/* return number of bytes written */
return count;
}
/*
* read using autoinc (count is number of 32bit words)
*/
static int hpi_read_inc(u32 addr, u32 *buf, u32 count)
{
int i;
u16 addr1, addr2, data1, data2;
addr1 = (u16) ((addr >> 16) & 0xffff); /* First HW is most significant */
addr2 = (u16) (addr & 0xffff);
/* write address */
HPI_HPIA_1 = addr1;
HPI_HPIA_2 = addr2;
for(i=0; i<count; i++) {
data1 = HPI_HPID_INC_1;
data2 = HPI_HPID_INC_2;
debugX(4, "hpi_read_inc: data1=0x%x, data2=0x%x\n", data1, data2);
buf[i] = (((u32) data1) << 16) | (data2 & 0xffff);
}
#if 0
while(buf_ptr < (u16*) (buf + count)) {
*(buf_ptr++) = HPI_HPID_INC_1;
*(buf_ptr++) = HPI_HPID_INC_2;
}
#endif
/* return number of bytes read */
return count;
}
/* write to non- auto inc regs */
static int hpi_write_noinc(u32 addr, u32 data)
{
u16 addr1, addr2, data1, data2;
addr1 = (u16) ((addr >> 16) & 0xffff); /* First HW is most significant */
addr2 = (u16) (addr & 0xffff);
/* printf("hpi_write_noinc: addr1=0x%x, addr2=0x%x\n", addr1, addr2); */
HPI_HPIA_1 = addr1;
HPI_HPIA_2 = addr2;
data1 = (u16) ((data >> 16) & 0xffff);
data2 = (u16) (data & 0xffff);
/* printf("hpi_write_noinc: data1=0x%x, data2=0x%x\n", data1, data2); */
HPI_HPID_NOINC_1 = data1;
HPI_HPID_NOINC_2 = data2;
return 0;
}
/* read from non- auto inc regs */
static u32 hpi_read_noinc(u32 addr)
{
u16 addr1, addr2, data1, data2;
u32 ret;
addr1 = (u16) ((addr >> 16) & 0xffff); /* First HW is most significant */
addr2 = (u16) (addr & 0xffff);
HPI_HPIA_1 = addr1;
HPI_HPIA_2 = addr2;
/* printf("hpi_read_noinc: addr1=0x%x, addr2=0x%x\n", addr1, addr2); */
data1 = HPI_HPID_NOINC_1;
data2 = HPI_HPID_NOINC_2;
/* printf("hpi_read_noinc: data1=0x%x, data2=0x%x\n", data1, data2); */
ret = (((u32) data1) << 16) | (data2 & 0xffff);
return ret;
}
/*
* Host Port Interface Tests
*/
#ifndef HPI_TEST_OSZI
/* main test function */
int hpi_test(void)
{
int err = 0;
u32 i, ii, pattern, tmp;
pattern = HPI_TEST_PATTERN;
u32 test_data[HPI_TEST_CHUNKSIZE];
u32 read_data[HPI_TEST_CHUNKSIZE];
debugX(2, "hpi_test: activating hpi...");
hpi_activate();
debugX(2, "OK.\n");
#if 0
/* Dump the first 1024 bytes
*
*/
for(i=0; i<1024; i+=4) {
if(i%16==0)
printf("\n0x%08x: ", i);
printf("0x%08x ", hpi_read_noinc(i));
}
#endif
/* HPIA read-write test
*
*/
debugX(1, "hpi_test: starting HPIA read-write tests...\n");
err |= hpi_write_addr_test(0xdeadc0de);
err |= hpi_write_addr_test(0xbeefd00d);
err |= hpi_write_addr_test(0xabcd1234);
err |= hpi_write_addr_test(0xaaaaaaaa);
if(err) {
debugX(1, "hpi_test: HPIA read-write tests: *** FAILED ***\n");
return -1;
}
debugX(1, "hpi_test: HPIA read-write tests: OK\n");
/* read write test using nonincremental data regs
*
*/
debugX(1, "hpi_test: starting nonincremental tests...\n");
for(i=HPI_TEST_START; i<HPI_TEST_END; i+=4) {
err |= hpi_read_write_test(i, pattern);
/* stolen from cmd_mem.c */
if(pattern & 0x80000000) {
pattern = -pattern; /* complement & increment */
} else {
pattern = ~pattern;
}
err |= hpi_read_write_test(i, pattern);
if(err) {
debugX(1, "hpi_test: nonincremental tests *** FAILED ***\n");
return -1;
}
}
debugX(1, "hpi_test: nonincremental test OK\n");
/* read write a chunk of data using nonincremental data regs
*
*/
debugX(1, "hpi_test: starting nonincremental chunk tests...\n");
pattern = HPI_TEST_PATTERN;
for(i=HPI_TEST_START; i<HPI_TEST_END; i+=4) {
hpi_write_noinc(i, pattern);
/* stolen from cmd_mem.c */
if(pattern & 0x80000000) {
pattern = -pattern; /* complement & increment */
} else {
pattern = ~pattern;
}
}
pattern = HPI_TEST_PATTERN;
for(i=HPI_TEST_START; i<HPI_TEST_END; i+=4) {
tmp = hpi_read_noinc(i);
if(tmp != pattern) {
debugX(1, "hpi_test: noninc chunk test *** FAILED *** @ 0x%x, written=0x%x, read=0x%x\n", i, pattern, tmp);
err = -1;
}
/* stolen from cmd_mem.c */
if(pattern & 0x80000000) {
pattern = -pattern; /* complement & increment */
} else {
pattern = ~pattern;
}
}
if(err)
return -1;
debugX(1, "hpi_test: nonincremental chunk test OK\n");
#ifdef DO_TINY_TEST
/* small verbose test using autoinc and nonautoinc to compare
*
*/
debugX(1, "hpi_test: tiny_autoinc_test...\n");
hpi_tiny_autoinc_test();
debugX(1, "hpi_test: tiny_autoinc_test done\n");
#endif /* DO_TINY_TEST */
/* $%& write a chunk of data using the autoincremental regs
*
*/
debugX(1, "hpi_test: starting autoinc test %d chunks with 0x%x bytes...\n",
((HPI_TEST_END - HPI_TEST_START) / HPI_TEST_CHUNKSIZE),
HPI_TEST_CHUNKSIZE);
for(i=HPI_TEST_START;
i < ((HPI_TEST_END - HPI_TEST_START) / HPI_TEST_CHUNKSIZE);
i++) {
/* generate the pattern data */
debugX(3, "generating pattern data: ");
for(ii = 0; ii < HPI_TEST_CHUNKSIZE; ii++) {
debugX(3, "0x%x ", pattern);
test_data[ii] = pattern;
read_data[ii] = 0x0; /* zero to be sure */
/* stolen from cmd_mem.c */
if(pattern & 0x80000000) {
pattern = -pattern; /* complement & increment */
} else {
pattern = ~pattern;
}
}
debugX(3, "done\n");
debugX(2, "Writing autoinc data @ 0x%x\n", i);
hpi_write_inc(i, test_data, HPI_TEST_CHUNKSIZE);
debugX(2, "Reading autoinc data @ 0x%x\n", i);
hpi_read_inc(i, read_data, HPI_TEST_CHUNKSIZE);
/* compare */
for(ii = 0; ii < HPI_TEST_CHUNKSIZE; ii++) {
debugX(3, "hpi_test_autoinc: @ 0x%x, written=0x%x, read=0x%x", i+ii, test_data[ii], read_data[ii]);
if(read_data[ii] != test_data[ii]) {
debugX(0, "hpi_test: autoinc test @ 0x%x, written=0x%x, read=0x%x *** FAILED ***\n", i+ii, test_data[ii], read_data[ii]);
return -1;
}
}
}
debugX(1, "hpi_test: autoinc test OK\n");
return 0;
}
#else /* HPI_TEST_OSZI */
int hpi_test(void)
{
int i;
u32 read_data[TINY_AUTOINC_DATA_SIZE];
unsigned int dummy_data[TINY_AUTOINC_DATA_SIZE] = {
0x11112222, 0x33334444, 0x55556666, 0x77778888,
0x9999aaaa, 0xbbbbcccc, 0xddddeeee, 0xffff1111,
0x00010002, 0x00030004, 0x00050006, 0x00070008,
0x0009000a, 0x000b000c, 0x000d000e, 0x000f0001
};
debugX(0, "hpi_test: activating hpi...");
hpi_activate();
debugX(0, "OK.\n");
while(1) {
led9(1);
debugX(0, " writing to autoinc...\n");
hpi_write_inc(TINY_AUTOINC_BASE_ADDR,
dummy_data, TINY_AUTOINC_DATA_SIZE);
debugX(0, " reading from autoinc...\n");
hpi_read_inc(TINY_AUTOINC_BASE_ADDR,
read_data, TINY_AUTOINC_DATA_SIZE);
for(i=0; i < (TINY_AUTOINC_DATA_SIZE); i++) {
debugX(0, " written=0x%x, read(inc)=0x%x\n",
dummy_data[i], read_data[i]);
}
led9(0);
udelay(2000000);
}
return 0;
}
#endif
/* test if Host Port Address Register can be written correctly */
static int hpi_write_addr_test(u32 addr)
{
u32 read_back;
/* write address */
HPI_HPIA_1 = ((u16) (addr >> 16)); /* First HW is most significant */
HPI_HPIA_2 = ((u16) addr);
read_back = (((u32) HPI_HPIA_1)<<16) | ((u32) HPI_HPIA_2);
if(read_back == addr) {
debugX(2, " hpi_write_addr_test OK: written=0x%x, read=0x%x\n",
addr, read_back);
return 0;
} else {
debugX(0, " hpi_write_addr_test *** FAILED ***: written=0x%x, read=0x%x\n",
addr, read_back);
return -1;
}
return 0;
}
/* test if a simple read/write sequence succeeds */
static int hpi_read_write_test(u32 addr, u32 data)
{
u32 read_back;
hpi_write_noinc(addr, data);
read_back = hpi_read_noinc(addr);
if(read_back == data) {
debugX(2, " hpi_read_write_test: OK, addr=0x%x written=0x%x, read=0x%x\n", addr, data, read_back);
return 0;
} else {
debugX(0, " hpi_read_write_test: *** FAILED ***, addr=0x%x written=0x%x, read=0x%x\n", addr, data, read_back);
return -1;
}
return 0;
}
static int hpi_tiny_autoinc_test(void)
{
int i;
u32 read_data[TINY_AUTOINC_DATA_SIZE];
u32 read_data_noinc[TINY_AUTOINC_DATA_SIZE];
unsigned int dummy_data[TINY_AUTOINC_DATA_SIZE] = {
0x11112222, 0x33334444, 0x55556666, 0x77778888,
0x9999aaaa, 0xbbbbcccc, 0xddddeeee, 0xffff1111,
0x00010002, 0x00030004, 0x00050006, 0x00070008,
0x0009000a, 0x000b000c, 0x000d000e, 0x000f0001
};
printf(" writing to autoinc...\n");
hpi_write_inc(TINY_AUTOINC_BASE_ADDR, dummy_data, TINY_AUTOINC_DATA_SIZE);
printf(" reading from autoinc...\n");
hpi_read_inc(TINY_AUTOINC_BASE_ADDR, read_data, TINY_AUTOINC_DATA_SIZE);
printf(" reading from noinc for comparison...\n");
for(i=0; i < (TINY_AUTOINC_DATA_SIZE); i++)
read_data_noinc[i] = hpi_read_noinc(TINY_AUTOINC_BASE_ADDR+i*4);
for(i=0; i < (TINY_AUTOINC_DATA_SIZE); i++) {
printf(" written=0x%x, read(inc)=0x%x, read(noinc)=0x%x\n",
dummy_data[i], read_data[i], read_data_noinc[i]);
}
return 0;
}
#endif /* CONFIG_SPC1920_HPI_TEST */