--- /dev/null
+/*
+ * (C) Copyright 2006
+ * Markus Klotzbuecher, DENX Software Engineering, mk@denx.de.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+/*
+ * 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);
+#if 0
+static void hpi_inactivate(void);
+#endif
+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);
+#ifdef DO_TINY_TEST
+static int hpi_tiny_autoinc_test(void);
+#endif /* DO_TINY_TEST */
+#endif /* CONFIG_SPC1920_HPI_TEST */
+
+
+/* init the host port interface on UPMA */
+int hpi_init(void)
+{
+ volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
+ volatile memctl8xx_t *memctl = &immr->im_memctl;
+ volatile spc1920_pld_t *pld = (spc1920_pld_t *) CONFIG_SYS_SPC1920_PLD_BASE;
+
+ upmconfig(UPMA, (uint *)dsp_table_slow, sizeof(dsp_table_slow)/sizeof(uint));
+ udelay(100);
+
+ memctl->memc_mamr = CONFIG_SYS_MAMR;
+ memctl->memc_or3 = CONFIG_SYS_OR3;
+ memctl->memc_br3 = CONFIG_SYS_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 *) CONFIG_SYS_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;
+}
+
+#if 0
+/* turn off the host port interface */
+static void hpi_inactivate(void)
+{
+ volatile spc1920_pld_t *pld = (spc1920_pld_t *) CONFIG_SYS_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 */
+
+}
+#endif
+
+/* reset the DSP */
+static void dsp_reset(void)
+{
+ volatile spc1920_pld_t *pld = (spc1920_pld_t *) CONFIG_SYS_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;
+
+ debug("writing from data=0x%lx to 0x%lx\n",
+ (ulong)data, (ulong)(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);
+ debug("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;
+ debug("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];
+
+ debug("hpi_test: activating hpi...");
+ hpi_activate();
+ debug("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
+ *
+ */
+ debug("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) {
+ debug("hpi_test: HPIA read-write tests: *** FAILED ***\n");
+ return -1;
+ }
+ debug("hpi_test: HPIA read-write tests: OK\n");
+
+
+ /* read write test using nonincremental data regs
+ *
+ */
+ debug("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) {
+ debug("hpi_test: nonincremental tests *** FAILED ***\n");
+ return -1;
+ }
+ }
+ debug("hpi_test: nonincremental test OK\n");
+
+ /* read write a chunk of data using nonincremental data regs
+ *
+ */
+ debug("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) {
+ debug("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;
+ debug("hpi_test: nonincremental chunk test OK\n");
+
+
+#ifdef DO_TINY_TEST
+ /* small verbose test using autoinc and nonautoinc to compare
+ *
+ */
+ debug("hpi_test: tiny_autoinc_test...\n");
+ hpi_tiny_autoinc_test();
+ debug("hpi_test: tiny_autoinc_test done\n");
+#endif /* DO_TINY_TEST */
+
+
+ /* $%& write a chunk of data using the autoincremental regs
+ *
+ */
+ debug("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 */
+ debug("generating pattern data: ");
+ for(ii = 0; ii < HPI_TEST_CHUNKSIZE; ii++) {
+ debug("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;
+ }
+ }
+ debug("done\n");
+
+ debug("Writing autoinc data @ 0x%x\n", i);
+ hpi_write_inc(i, test_data, HPI_TEST_CHUNKSIZE);
+
+ debug("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++) {
+ debug("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]) {
+ debug("hpi_test: autoinc test @ 0x%x, written=0x%x, read=0x%x *** FAILED ***\n", i+ii, test_data[ii], read_data[ii]);
+ return -1;
+ }
+ }
+ }
+ debug("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
+ };
+
+ debug("hpi_test: activating hpi...");
+ hpi_activate();
+ debug("OK.\n");
+
+ while(1) {
+ led9(1);
+ debug(" writing to autoinc...\n");
+ hpi_write_inc(TINY_AUTOINC_BASE_ADDR,
+ dummy_data, TINY_AUTOINC_DATA_SIZE);
+
+ debug(" 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++) {
+ debug(" 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) {
+ debug(" hpi_write_addr_test OK: written=0x%x, read=0x%x\n",
+ addr, read_back);
+ return 0;
+ } else {
+ debug(" 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) {
+ debug(" hpi_read_write_test: OK, addr=0x%x written=0x%x, read=0x%x\n", addr, data, read_back);
+ return 0;
+ } else {
+ debug(" hpi_read_write_test: *** FAILED ***, addr=0x%x written=0x%x, read=0x%x\n", addr, data, read_back);
+ return -1;
+ }
+
+ return 0;
+}
+
+#ifdef DO_TINY_TEST
+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 /* DO_TINY_TEST */
+
+#endif /* CONFIG_SPC1920_HPI_TEST */
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