[U-Boot-Users] [PATCH 4/5] ppc4xx: Add FPGA support and BSP command for PMC440 boards
Matthias Fuchs
matthias.fuchs at esd-electronics.com
Mon Nov 12 15:58:12 CET 2007
Hi,
Stefan motivated me to resend this patch with some whitespace issues fixed.
This patch adds some BSP commands and FPGA booting support
for esd's PMC440 boards.
Signed-off-by: Matthias Fuchs <matthias.fuchs at esd-electronics.com>
---
board/esd/pmc440/cmd_pmc440.c | 555 +++++++++++++++++++++++++++++++++++++++++
board/esd/pmc440/fpga.c | 469 ++++++++++++++++++++++++++++++++++
board/esd/pmc440/fpga.h | 47 ++++
3 files changed, 1071 insertions(+), 0 deletions(-)
create mode 100644 board/esd/pmc440/cmd_pmc440.c
create mode 100644 board/esd/pmc440/fpga.c
create mode 100644 board/esd/pmc440/fpga.h
diff --git a/board/esd/pmc440/cmd_pmc440.c b/board/esd/pmc440/cmd_pmc440.c
new file mode 100644
index 0000000..0480ece
--- /dev/null
+++ b/board/esd/pmc440/cmd_pmc440.c
@@ -0,0 +1,555 @@
+/*
+ * (C) Copyright 2007
+ * Matthias Fuchs, esd Gmbh, matthias.fuchs at esd-electronics.com.
+ *
+ * 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>
+#include <command.h>
+#include <asm/io.h>
+
+#include <asm/processor.h>
+
+#include "pmc440.h"
+
+int is_monarch(void);
+int bootstrap_eeprom_write(unsigned dev_addr, unsigned offset, uchar *buffer, unsigned cnt);
+int eeprom_write_enable(unsigned dev_addr, int state);
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#ifdef CONFIG_CMD_BSP
+
+static int got_fifoirq;
+static int got_hcirq;
+
+int fpga_interrupt(u32 arg)
+{
+ pmc440_fpga_t *fpga = (pmc440_fpga_t *)arg;
+ int rc = -1; /* not for us */
+ u32 status = FPGA_IN32(&fpga->status);
+
+ /* check for interrupt from fifo module */
+ if (status & STATUS_FIFO_ISF) {
+ /* disable this int source */
+ FPGA_OUT32(&fpga->hostctrl, HOSTCTRL_FIFOIE_GATE);
+ rc = 0;
+ got_fifoirq = 1; /* trigger backend */
+ }
+
+ if (status & STATUS_HOST_ISF) {
+ FPGA_OUT32(&fpga->hostctrl, HOSTCTRL_HCINT_GATE);
+ rc = 0;
+ got_hcirq = 1;
+ }
+
+ return rc;
+}
+
+
+int do_waithci(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ pmc440_fpga_t *fpga = (pmc440_fpga_t *)FPGA_BA;
+
+ got_hcirq = 0;
+
+ FPGA_CLRBITS(&fpga->ctrla, CTRL_HOST_IE);
+ FPGA_OUT32(&fpga->hostctrl, HOSTCTRL_HCINT_GATE);
+
+ irq_install_handler(IRQ0_FPGA,
+ (interrupt_handler_t *)fpga_interrupt,
+ fpga);
+
+ FPGA_SETBITS(&fpga->ctrla, CTRL_HOST_IE);
+
+ while (!got_hcirq) {
+ /* Abort if ctrl-c was pressed */
+ if (ctrlc()) {
+ puts("\nAbort\n");
+ break;
+ }
+ }
+ if (got_hcirq)
+ printf("Got interrupt!\n");
+
+ FPGA_CLRBITS(&fpga->ctrla, CTRL_HOST_IE);
+ irq_free_handler(IRQ0_FPGA);
+ return 0;
+}
+U_BOOT_CMD(
+ waithci, 1, 1, do_waithci,
+ "waithci - Wait for host control interrupt\n",
+ NULL
+ );
+
+
+void dump_fifo(pmc440_fpga_t *fpga, int f, int *n)
+{
+ u32 ctrl;
+
+ while (!((ctrl = FPGA_IN32(&fpga->fifo[f].ctrl)) & FIFO_EMPTY)) {
+ printf("%5d %d %3d %08x",
+ (*n)++, f, ctrl & (FIFO_LEVEL_MASK | FIFO_FULL),
+ FPGA_IN32(&fpga->fifo[f].data));
+ if (ctrl & FIFO_OVERFLOW) {
+ printf(" OVERFLOW\n");
+ FPGA_CLRBITS(&fpga->fifo[f].ctrl, FIFO_OVERFLOW);
+ } else
+ printf("\n");
+ }
+}
+
+
+int do_fifo(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ pmc440_fpga_t *fpga = (pmc440_fpga_t *)FPGA_BA;
+ int i;
+ int n = 0;
+ u32 ctrl, data, f;
+ char str[] = "\\|/-";
+ int abort = 0;
+ int count = 0;
+ int count2 = 0;
+
+ switch (argc) {
+ case 1:
+ /* print all fifos status information */
+ printf("fifo level status\n");
+ printf("______________________________\n");
+ for (i=0; i<FIFO_COUNT; i++) {
+ ctrl = FPGA_IN32(&fpga->fifo[i].ctrl);
+ printf(" %d %3d %s%s%s %s\n",
+ i, ctrl & (FIFO_LEVEL_MASK | FIFO_FULL),
+ ctrl & FIFO_FULL ? "FULL " : "",
+ ctrl & FIFO_EMPTY ? "EMPTY " : "",
+ ctrl & (FIFO_FULL|FIFO_EMPTY) ? "" : "NOT EMPTY",
+ ctrl & FIFO_OVERFLOW ? "OVERFLOW" : "");
+ }
+ break;
+
+ case 2:
+ /* completely read out fifo 'n' */
+ if (!strcmp(argv[1],"read")) {
+ printf(" # fifo level data\n");
+ printf("______________________________\n");
+
+ for (i=0; i<FIFO_COUNT; i++)
+ dump_fifo(fpga, i, &n);
+
+ } else if (!strcmp(argv[1],"wait")) {
+ got_fifoirq = 0;
+
+ irq_install_handler(IRQ0_FPGA,
+ (interrupt_handler_t *)fpga_interrupt,
+ fpga);
+
+ printf(" # fifo level data\n");
+ printf("______________________________\n");
+
+ /* enable all fifo interrupts */
+ FPGA_OUT32(&fpga->hostctrl,
+ HOSTCTRL_FIFOIE_GATE | HOSTCTRL_FIFOIE_FLAG);
+ for (i=0; i<FIFO_COUNT; i++) {
+ /* enable interrupts from all fifos */
+ FPGA_SETBITS(&fpga->fifo[i].ctrl, FIFO_IE);
+ }
+
+ while (1) {
+ /* wait loop */
+ while (!got_fifoirq) {
+ count++;
+ if (!(count % 100)) {
+ count2++;
+ putc(0x08); /* backspace */
+ putc(str[count2 % 4]);
+ }
+
+ /* Abort if ctrl-c was pressed */
+ if ((abort = ctrlc())) {
+ puts("\nAbort\n");
+ break;
+ }
+ udelay(1000);
+ }
+ if (abort)
+ break;
+
+ /* simple fifo backend */
+ if (got_fifoirq) {
+ for (i=0; i<FIFO_COUNT; i++)
+ dump_fifo(fpga, i, &n);
+
+ got_fifoirq = 0;
+ /* unmask global fifo irq */
+ FPGA_OUT32(&fpga->hostctrl,
+ HOSTCTRL_FIFOIE_GATE | HOSTCTRL_FIFOIE_FLAG);
+ }
+ }
+
+ /* disable all fifo interrupts */
+ FPGA_OUT32(&fpga->hostctrl, HOSTCTRL_FIFOIE_GATE);
+ for (i=0; i<FIFO_COUNT; i++)
+ FPGA_CLRBITS(&fpga->fifo[i].ctrl, FIFO_IE);
+
+ irq_free_handler(IRQ0_FPGA);
+
+ } else {
+ printf("Usage:\nfifo %s\n", cmdtp->help);
+ return 1;
+ }
+ break;
+
+ case 4:
+ case 5:
+ if (!strcmp(argv[1],"write")) {
+ /* get fifo number or fifo address */
+ f = simple_strtoul(argv[2], NULL, 16);
+
+ /* data paramter */
+ data = simple_strtoul(argv[3], NULL, 16);
+
+ /* get optional count parameter */
+ n = 1;
+ if (argc >= 5)
+ n = (int)simple_strtoul(argv[4], NULL, 10);
+
+ if (f < FIFO_COUNT) {
+ printf("writing %d x %08x to fifo %d\n",
+ n, data, f);
+ for (i=0; i<n; i++)
+ FPGA_OUT32(&fpga->fifo[f].data, data);
+ } else {
+ printf("writing %d x %08x to fifo port at address %08x\n",
+ n, data, f);
+ for (i=0; i<n; i++)
+ out32(f, data);
+ }
+ } else {
+ printf("Usage:\nfifo %s\n", cmdtp->help);
+ return 1;
+ }
+ break;
+
+ default:
+ printf("Usage:\nfifo %s\n", cmdtp->help);
+ return 1;
+ }
+ return 0;
+}
+U_BOOT_CMD(
+ fifo, 5, 1, do_fifo,
+ "fifo - Fifo module operations\n",
+ "wait\nfifo read\n"
+ "fifo write fifo(0..3) data [cnt=1]\n"
+ "fifo write address(>=4) data [cnt=1]\n"
+ " - without arguments: print all fifo's status\n"
+ " - with 'wait' argument: interrupt driven read from all fifos\n"
+ " - with 'read' argument: read current contents from all fifos\n"
+ " - with 'write' argument: write 'data' 'cnt' times to 'fifo' or 'address'\n"
+ );
+
+
+int do_setup_bootstrap_eeprom(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ ulong sdsdp[5];
+ ulong delay;
+ int count=16;
+
+ if (argc < 2) {
+ printf("Usage:\nsbe %s\n", cmdtp->help);
+ return -1;
+ }
+
+ if (argc > 1) {
+ if (!strcmp(argv[1], "400")) {
+ /* PLB=133MHz, PLB/PCI=4 */
+ printf("Bootstrapping for 400MHz\n");
+ sdsdp[0]=0x8678624e;
+ sdsdp[1]=0x0947a030;
+ sdsdp[2]=0x40082350;
+ sdsdp[3]=0x0d050000;
+ } else if (!strcmp(argv[1], "533")) {
+ /* PLB=133MHz, PLB/PCI=3 */
+ printf("Bootstrapping for 533MHz\n");
+ sdsdp[0]=0x87788252;
+ sdsdp[1]=0x095fa030;
+ sdsdp[2]=0x40082350;
+ sdsdp[3]=0x0d050000;
+ } else if (!strcmp(argv[1], "667")) {
+ /* PLB=133MHz, PLB/PCI=4 */
+ printf("Bootstrapping for 667MHz\n");
+ sdsdp[0]=0x8778a256;
+ sdsdp[1]=0x0947a030;
+ sdsdp[2]=0x40082350;
+ sdsdp[3]=0x0d050000;
+ } else if (!strcmp(argv[1], "test")) {
+ /* TODO: this will replace the 667 MHz config above.
+ * But it needs some more testing on a real 667 MHz CPU.
+ */
+ printf("Bootstrapping for test (667MHz PLB=133PLB PLB/PCI=3)\n");
+ sdsdp[0]=0x8778a256;
+ sdsdp[1]=0x095fa030;
+ sdsdp[2]=0x40082350;
+ sdsdp[3]=0x0d050000;
+ } else {
+ printf("Usage:\nsbe %s\n", cmdtp->help);
+ return -1;
+ }
+ }
+
+ if (argc > 2) {
+ sdsdp[4] = 0;
+ if (argv[2][0]=='1')
+ sdsdp[4]=0x19750100;
+ else if (argv[2][0]=='0')
+ sdsdp[4]=0x19750000;
+ if (sdsdp[4])
+ count += 4;
+ }
+
+ if (argc > 3) {
+ delay = simple_strtoul(argv[3], NULL, 10);
+ if (delay > 20)
+ delay = 20;
+ sdsdp[4] |= delay;
+ }
+
+ printf("Writing boot EEPROM ...\n");
+ if (bootstrap_eeprom_write(CFG_I2C_BOOT_EEPROM_ADDR,
+ 0, (uchar*)sdsdp, count) != 0)
+ printf("bootstrap_eeprom_write failed\n");
+ else
+ printf("done (dump via 'i2c md 52 0.1 14')\n");
+
+ return 0;
+}
+U_BOOT_CMD(
+ sbe, 4, 0, do_setup_bootstrap_eeprom,
+ "sbe - setup bootstrap eeprom\n",
+ "<cpufreq:400|533|667> [<console-uart:0|1> [<bringup delay (0..20s)>]]"
+ );
+
+
+#ifdef CONFIG_PRAM
+#include <environment.h>
+extern env_t *env_ptr;
+
+int do_painit(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ DECLARE_GLOBAL_DATA_PTR;
+ u32 memsize;
+ u32 pram;
+ char *v;
+ u32 param;
+ ulong *lptr;
+
+ memsize = gd->bd->bi_memsize;
+
+ v = getenv("pram");
+ if (v)
+ pram = simple_strtoul(v, NULL, 10);
+ else {
+ printf("Error: pram undefined. Please define pram in KiB\n");
+ return 1;
+ }
+
+ param = memsize - (pram << 10);
+ printf("PARAM: @%08x\n", param);
+
+ memset((void*)param, 0, (pram << 10));
+ memcpy((void*)param, env_ptr, CFG_ENV_SIZE);
+
+ lptr = (ulong*)memsize;
+ *(--lptr) = CFG_ENV_SIZE;
+ *(--lptr) = pram << 10;
+ *(--lptr) = crc32(0, (void*)(memsize - 0x08), 0x08);
+ *(--lptr) = 0;
+ return 0;
+}
+U_BOOT_CMD(
+ painit, 1, 1, do_painit,
+ "painit - prepare PciAccess system\n",
+ NULL
+ );
+#endif /* CONFIG_PRAM */
+
+
+int do_selfreset(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ if (argc > 1) {
+ if (argv[1][0] == '0') {
+ /* assert */
+ printf("self-reset# asserted\n");
+ out_be32((void*)GPIO0_TCR,
+ in_be32((void*)GPIO0_TCR) | GPIO0_SELF_RST);
+ } else {
+ /* deassert */
+ printf("self-reset# deasserted\n");
+ out_be32((void*)GPIO0_TCR,
+ in_be32((void*)GPIO0_TCR) & ~GPIO0_SELF_RST);
+ }
+ } else {
+ printf("self-reset# is %s\n",
+ in_be32((void*)GPIO0_TCR) & GPIO0_SELF_RST ?
+ "active" : "inactive");
+ }
+
+ return 0;
+}
+U_BOOT_CMD(
+ selfreset, 2, 1, do_selfreset,
+ "selfreset- assert self-reset# signal\n",
+ NULL
+ );
+
+
+int do_resetout(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ pmc440_fpga_t *fpga = (pmc440_fpga_t *)FPGA_BA;
+
+ /* requiers bootet FPGA and PLD_IOEN_N active */
+ if (in_be32((void*)GPIO1_OR) & GPIO1_IOEN_N) {
+ printf("Error: resetout requires a bootet FPGA\n");
+ return -1;
+ }
+
+ if (argc > 1) {
+ if (argv[1][0] == '0') {
+ /* assert */
+ printf("PMC-RESETOUT# asserted\n");
+ FPGA_OUT32(&fpga->hostctrl,
+ HOSTCTRL_PMCRSTOUT_GATE);
+ } else {
+ /* deassert */
+ printf("PMC-RESETOUT# deasserted\n");
+ FPGA_OUT32(&fpga->hostctrl,
+ HOSTCTRL_PMCRSTOUT_GATE | HOSTCTRL_PMCRSTOUT_FLAG);
+ }
+ } else {
+ printf("PMC-RESETOUT# is %s\n",
+ FPGA_IN32(&fpga->hostctrl) & HOSTCTRL_PMCRSTOUT_FLAG ?
+ "inactive" : "active");
+ }
+
+ return 0;
+}
+U_BOOT_CMD(
+ resetout, 2, 1, do_resetout,
+ "resetout - assert PMC-RESETOUT# signal\n",
+ NULL
+ );
+
+
+int do_inta(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ if (is_monarch()) {
+ printf("This command is only supported in non-monarch mode\n");
+ return -1;
+ }
+
+ if (argc > 1) {
+ if (argv[1][0] == '0') {
+ /* assert */
+ printf("inta# asserted\n");
+ out_be32((void*)GPIO1_TCR,
+ in_be32((void*)GPIO1_TCR) | GPIO1_INTA_FAKE);
+ } else {
+ /* deassert */
+ printf("inta# deasserted\n");
+ out_be32((void*)GPIO1_TCR,
+ in_be32((void*)GPIO1_TCR) & ~GPIO1_INTA_FAKE);
+ }
+ } else {
+ printf("inta# is %s\n", in_be32((void*)GPIO1_TCR) & GPIO1_INTA_FAKE ? "active" : "inactive");
+ }
+ return 0;
+}
+U_BOOT_CMD(
+ inta, 2, 1, do_inta,
+ "inta - Assert/Deassert or query INTA# state in non-monarch mode\n",
+ NULL
+ );
+
+
+/* test-only */
+int do_pmm(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ ulong pciaddr;
+
+ if (argc > 1) {
+ pciaddr = simple_strtoul(argv[1], NULL, 16);
+
+ pciaddr &= 0xf0000000;
+
+ /* map PCI address at 0xc0000000 in PLB space */
+ out32r(PCIX0_PMM1MA, 0x00000000); /* PMM1 Mask/Attribute - disabled b4 setting */
+ out32r(PCIX0_PMM1LA, 0xc0000000); /* PMM1 Local Address */
+ out32r(PCIX0_PMM1PCILA, pciaddr); /* PMM1 PCI Low Address */
+ out32r(PCIX0_PMM1PCIHA, 0x00000000); /* PMM1 PCI High Address */
+ out32r(PCIX0_PMM1MA, 0xf0000001); /* 256MB + No prefetching, and enable region */
+ } else {
+ printf("Usage:\npmm %s\n", cmdtp->help);
+ }
+ return 0;
+}
+U_BOOT_CMD(
+ pmm, 2, 1, do_pmm,
+ "pmm - Setup pmm[1] registers\n",
+ "<pciaddr> (pciaddr will be aligned to 256MB)\n"
+ );
+
+#if defined(CFG_EEPROM_WREN)
+int do_eep_wren(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ int query = argc == 1;
+ int state = 0;
+
+ if (query) {
+ /* Query write access state. */
+ state = eeprom_write_enable(CFG_I2C_EEPROM_ADDR, -1);
+ if (state < 0) {
+ puts("Query of write access state failed.\n");
+ } else {
+ printf("Write access for device 0x%0x is %sabled.\n",
+ CFG_I2C_EEPROM_ADDR, state ? "en" : "dis");
+ state = 0;
+ }
+ } else {
+ if ('0' == argv[1][0]) {
+ /* Disable write access. */
+ state = eeprom_write_enable(CFG_I2C_EEPROM_ADDR, 0);
+ } else {
+ /* Enable write access. */
+ state = eeprom_write_enable(CFG_I2C_EEPROM_ADDR, 1);
+ }
+ if (state < 0) {
+ puts("Setup of write access state failed.\n");
+ }
+ }
+
+ return state;
+}
+U_BOOT_CMD(eepwren, 2, 0, do_eep_wren,
+ "eepwren - Enable / disable / query EEPROM write access\n",
+ NULL);
+#endif /* #if defined(CFG_EEPROM_WREN) */
+
+#endif /* CONFIG_CMD_BSP */
diff --git a/board/esd/pmc440/fpga.c b/board/esd/pmc440/fpga.c
new file mode 100644
index 0000000..85658f2
--- /dev/null
+++ b/board/esd/pmc440/fpga.c
@@ -0,0 +1,469 @@
+/*
+ * (C) Copyright 2007
+ * Matthias Fuchs, esd gmbh, matthias.fuchs at esd-electronics.com.
+ *
+ * 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>
+#include <asm/io.h>
+#include <spartan2.h>
+#include <spartan3.h>
+#include <command.h>
+#include "fpga.h"
+#include "pmc440.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#ifdef CONFIG_FPGA
+
+#if 0
+#define PMC440_FPGA_DEBUG
+#endif
+
+#ifdef PMC440_FPGA_DEBUG
+#define PRINTF(fmt,args...) printf (fmt ,##args)
+#else
+#define PRINTF(fmt,args...)
+#endif
+
+#define USE_SP_CODE
+
+#ifdef USE_SP_CODE
+Xilinx_Spartan3_Slave_Parallel_fns pmc440_fpga_fns = {
+ fpga_pre_config_fn,
+ fpga_pgm_fn,
+ fpga_init_fn,
+ NULL, /* err */
+ fpga_done_fn,
+ fpga_clk_fn,
+ fpga_cs_fn,
+ fpga_wr_fn,
+ NULL, /* rdata */
+ fpga_wdata_fn,
+ fpga_busy_fn,
+ fpga_abort_fn,
+ fpga_post_config_fn,
+};
+#else
+Xilinx_Spartan3_Slave_Serial_fns pmc440_fpga_fns = {
+ fpga_pre_config_fn,
+ fpga_pgm_fn,
+ fpga_clk_fn,
+ fpga_init_fn,
+ fpga_done_fn,
+ fpga_wr_fn,
+ fpga_post_config_fn,
+};
+#endif
+
+Xilinx_Spartan2_Slave_Serial_fns ngcc_fpga_fns = {
+ ngcc_fpga_pre_config_fn,
+ ngcc_fpga_pgm_fn,
+ ngcc_fpga_clk_fn,
+ ngcc_fpga_init_fn,
+ ngcc_fpga_done_fn,
+ ngcc_fpga_wr_fn,
+ ngcc_fpga_post_config_fn
+};
+
+Xilinx_desc fpga[CONFIG_FPGA_COUNT] = {
+ XILINX_XC3S1200E_DESC(
+#ifdef USE_SP_CODE
+ slave_parallel,
+#else
+ slave_serial,
+#endif
+ (void *)&pmc440_fpga_fns,
+ 0),
+ XILINX_XC2S200_DESC(
+ slave_serial,
+ (void *)&ngcc_fpga_fns,
+ 0)
+};
+
+
+/*
+ * Set the active-low FPGA reset signal.
+ */
+void fpga_reset(int assert)
+{
+ PRINTF("%s:%d: RESET ", __FUNCTION__, __LINE__);
+ if (assert) {
+ out_be32((void*)GPIO1_OR, in_be32((void*)GPIO1_OR) & ~GPIO1_FPGA_DATA);
+ PRINTF("asserted\n");
+ } else {
+ out_be32((void*)GPIO1_OR, in_be32((void*)GPIO1_OR) | GPIO1_FPGA_DATA);
+ PRINTF("deasserted\n");
+ }
+}
+
+
+/*
+ * Initialize the SelectMap interface. We assume that the mode and the
+ * initial state of all of the port pins have already been set!
+ */
+void fpga_serialslave_init(void)
+{
+ PRINTF ("%s:%d: Initialize serial slave interface\n", __FUNCTION__,
+ __LINE__);
+ fpga_pgm_fn(FALSE, FALSE, 0); /* make sure program pin is inactive */
+}
+
+
+/*
+ * Set the FPGA's active-low SelectMap program line to the specified level
+ */
+int fpga_pgm_fn(int assert, int flush, int cookie)
+{
+ PRINTF("%s:%d: FPGA PROGRAM ",
+ __FUNCTION__, __LINE__);
+
+ if (assert) {
+ out_be32((void*)GPIO1_OR, in_be32((void*)GPIO1_OR) & ~GPIO1_FPGA_PRG);
+ PRINTF("asserted\n");
+ } else {
+ out_be32((void*)GPIO1_OR, in_be32((void*)GPIO1_OR) | GPIO1_FPGA_PRG);
+ PRINTF("deasserted\n");
+ }
+ return assert;
+}
+
+
+/*
+ * Test the state of the active-low FPGA INIT line. Return 1 on INIT
+ * asserted (low).
+ */
+int fpga_init_fn(int cookie)
+{
+ if (in_be32((void*)GPIO1_IR) & GPIO1_FPGA_INIT)
+ return 0;
+ else
+ return 1;
+}
+
+#ifdef USE_SP_CODE
+int fpga_abort_fn(int cookie)
+{
+ return 0;
+}
+
+
+int fpga_cs_fn(int assert_cs, int flush, int cookie)
+{
+ return assert_cs;
+}
+
+
+int fpga_busy_fn(int cookie)
+{
+ return 1;
+}
+#endif
+
+
+/*
+ * Test the state of the active-high FPGA DONE pin
+ */
+int fpga_done_fn(int cookie)
+{
+ if (in_be32((void*)GPIO1_IR) & GPIO1_FPGA_DONE)
+ return 1;
+ else
+ return 0;
+}
+
+
+/*
+ * FPGA pre-configuration function. Just make sure that
+ * FPGA reset is asserted to keep the FPGA from starting up after
+ * configuration.
+ */
+int fpga_pre_config_fn(int cookie)
+{
+ PRINTF("%s:%d: FPGA pre-configuration\n", __FUNCTION__, __LINE__);
+ fpga_reset(TRUE);
+
+ /* release init# */
+ out_be32((void*)GPIO0_OR, in_be32((void*)GPIO0_OR) | GPIO0_FPGA_FORCEINIT);
+ /* disable PLD IOs */
+ out_be32((void*)GPIO1_OR, in_be32((void*)GPIO1_OR) | GPIO1_IOEN_N);
+ return 0;
+}
+
+
+/*
+ * FPGA post configuration function. Blip the FPGA reset line and then see if
+ * the FPGA appears to be running.
+ */
+int fpga_post_config_fn(int cookie)
+{
+ pmc440_fpga_t *fpga = (pmc440_fpga_t *)FPGA_BA;
+ int rc=0;
+ char *s;
+
+ PRINTF("%s:%d: FPGA post configuration\n", __FUNCTION__, __LINE__);
+
+ /* enable PLD0..7 pins */
+ out_be32((void*)GPIO1_OR, in_be32((void*)GPIO1_OR) & ~GPIO1_IOEN_N);
+
+ fpga_reset(TRUE);
+ udelay (100);
+ fpga_reset(FALSE);
+ udelay (100);
+
+ /* NGCC only: enable ledlink */
+ if ((s = getenv("bd_type")) && !strcmp(s, "ngcc"))
+ FPGA_SETBITS(&fpga->ctrla, 0x29f8c000);
+
+ return rc;
+}
+
+
+int fpga_clk_fn(int assert_clk, int flush, int cookie)
+{
+ if (assert_clk)
+ out_be32((void*)GPIO1_OR, in_be32((void*)GPIO1_OR) | GPIO1_FPGA_CLK);
+ else
+ out_be32((void*)GPIO1_OR, in_be32((void*)GPIO1_OR) & ~GPIO1_FPGA_CLK);
+
+ return assert_clk;
+}
+
+
+int fpga_wr_fn(int assert_write, int flush, int cookie)
+{
+ if (assert_write)
+ out_be32((void*)GPIO1_OR, in_be32((void*)GPIO1_OR) | GPIO1_FPGA_DATA);
+ else
+ out_be32((void*)GPIO1_OR, in_be32((void*)GPIO1_OR) & ~GPIO1_FPGA_DATA);
+
+ return assert_write;
+}
+
+#ifdef USE_SP_CODE
+int fpga_wdata_fn(uchar data, int flush, int cookie)
+{
+ uchar val = data;
+ ulong or = in_be32((void*)GPIO1_OR);
+ int i = 7;
+ do {
+ /* Write data */
+ if (val & 0x80)
+ or = (or & ~GPIO1_FPGA_CLK) | GPIO1_FPGA_DATA;
+ else
+ or = or & ~(GPIO1_FPGA_CLK | GPIO1_FPGA_DATA);
+
+ out_be32((void*)GPIO1_OR, or);
+
+ /* Assert the clock */
+ or |= GPIO1_FPGA_CLK;
+ out_be32((void*)GPIO1_OR, or);
+ val <<= 1;
+ i --;
+ } while (i > 0);
+
+ /* Write last data bit (the 8th clock comes from the sp_load() code */
+ if (val & 0x80)
+ or = (or & ~GPIO1_FPGA_CLK) | GPIO1_FPGA_DATA;
+ else
+ or = or & ~(GPIO1_FPGA_CLK | GPIO1_FPGA_DATA);
+
+ out_be32((void*)GPIO1_OR, or);
+
+ return 0;
+}
+#endif
+
+#define NGCC_FPGA_PRG CLOCK_EN
+#define NGCC_FPGA_DATA RESET_OUT
+#define NGCC_FPGA_DONE CLOCK_IN
+#define NGCC_FPGA_INIT IRIGB_R_IN
+#define NGCC_FPGA_CLK CLOCK_OUT
+
+void ngcc_fpga_serialslave_init(void)
+{
+ PRINTF("%s:%d: Initialize serial slave interface\n",
+ __FUNCTION__, __LINE__);
+
+ /* make sure program pin is inactive */
+ ngcc_fpga_pgm_fn (FALSE, FALSE, 0);
+}
+
+/*
+ * Set the active-low FPGA reset signal.
+ */
+void ngcc_fpga_reset(int assert)
+{
+ PRINTF("%s:%d: RESET ", __FUNCTION__, __LINE__);
+
+ if (assert) {
+ FPGA_CLRBITS(NGCC_CTRL_BASE, NGCC_CTRL_FPGARST_N);
+ PRINTF("asserted\n");
+ } else {
+ FPGA_SETBITS(NGCC_CTRL_BASE, NGCC_CTRL_FPGARST_N);
+ PRINTF("deasserted\n");
+ }
+}
+
+
+/*
+ * Set the FPGA's active-low SelectMap program line to the specified level
+ */
+int ngcc_fpga_pgm_fn(int assert, int flush, int cookie)
+{
+ pmc440_fpga_t *fpga = (pmc440_fpga_t *)FPGA_BA;
+
+ PRINTF("%s:%d: FPGA PROGRAM ", __FUNCTION__, __LINE__);
+
+ if (assert) {
+ FPGA_CLRBITS(&fpga->ctrla, NGCC_FPGA_PRG);
+ PRINTF("asserted\n");
+ } else {
+ FPGA_SETBITS(&fpga->ctrla, NGCC_FPGA_PRG);
+ PRINTF("deasserted\n");
+ }
+
+ return assert;
+}
+
+
+/*
+ * Test the state of the active-low FPGA INIT line. Return 1 on INIT
+ * asserted (low).
+ */
+int ngcc_fpga_init_fn(int cookie)
+{
+ pmc440_fpga_t *fpga = (pmc440_fpga_t *)FPGA_BA;
+
+ PRINTF("%s:%d: INIT check... ", __FUNCTION__, __LINE__);
+ if (FPGA_IN32(&fpga->status) & NGCC_FPGA_INIT) {
+ PRINTF("high\n");
+ return 0;
+ } else {
+ PRINTF("low\n");
+ return 1;
+ }
+}
+
+
+/*
+ * Test the state of the active-high FPGA DONE pin
+ */
+int ngcc_fpga_done_fn(int cookie)
+{
+ pmc440_fpga_t *fpga = (pmc440_fpga_t *)FPGA_BA;
+
+ PRINTF("%s:%d: DONE check... ", __FUNCTION__, __LINE__);
+ if (FPGA_IN32(&fpga->status) & NGCC_FPGA_DONE) {
+ PRINTF("DONE high\n");
+ return 1;
+ } else {
+ PRINTF("low\n");
+ return 0;
+ }
+}
+
+
+/*
+ * FPGA pre-configuration function.
+ */
+int ngcc_fpga_pre_config_fn(int cookie)
+{
+ pmc440_fpga_t *fpga = (pmc440_fpga_t *)FPGA_BA;
+ PRINTF("%s:%d: FPGA pre-configuration\n", __FUNCTION__, __LINE__);
+
+ ngcc_fpga_reset(TRUE);
+ FPGA_CLRBITS(&fpga->ctrla, 0xfffffe00);
+
+ ngcc_fpga_reset(TRUE);
+ return 0;
+}
+
+
+/*
+ * FPGA post configuration function. Blip the FPGA reset line and then see if
+ * the FPGA appears to be running.
+ */
+int ngcc_fpga_post_config_fn(int cookie)
+{
+ pmc440_fpga_t *fpga = (pmc440_fpga_t *)FPGA_BA;
+
+ PRINTF("%s:%d: NGCC FPGA post configuration\n", __FUNCTION__, __LINE__);
+
+ udelay (100);
+ ngcc_fpga_reset(FALSE);
+
+ FPGA_SETBITS(&fpga->ctrla, 0x29f8c000);
+
+ return 0;
+}
+
+
+int ngcc_fpga_clk_fn(int assert_clk, int flush, int cookie)
+{
+ pmc440_fpga_t *fpga = (pmc440_fpga_t *)FPGA_BA;
+
+ if (assert_clk)
+ FPGA_SETBITS(&fpga->ctrla, NGCC_FPGA_CLK);
+ else
+ FPGA_CLRBITS(&fpga->ctrla, NGCC_FPGA_CLK);
+
+ return assert_clk;
+}
+
+
+int ngcc_fpga_wr_fn(int assert_write, int flush, int cookie)
+{
+ pmc440_fpga_t *fpga = (pmc440_fpga_t *)FPGA_BA;
+
+ if (assert_write)
+ FPGA_SETBITS(&fpga->ctrla, NGCC_FPGA_DATA);
+ else
+ FPGA_CLRBITS(&fpga->ctrla, NGCC_FPGA_DATA);
+
+ return assert_write;
+}
+
+
+/*
+ * Initialize the fpga. Return 1 on success, 0 on failure.
+ */
+int pmc440_init_fpga(void)
+{
+ char *s;
+
+ PRINTF("%s:%d: Initialize FPGA interface (relocation offset = 0x%.8lx)\n",
+ __FUNCTION__, __LINE__, gd->reloc_off);
+ fpga_init(gd->reloc_off);
+
+ fpga_serialslave_init ();
+ PRINTF("%s:%d: Adding fpga 0\n", __FUNCTION__, __LINE__);
+ fpga_add (fpga_xilinx, &fpga[0]);
+
+ /* NGCC only */
+ if ((s = getenv("bd_type")) && !strcmp(s, "ngcc")) {
+ ngcc_fpga_serialslave_init ();
+ PRINTF("%s:%d: Adding fpga 1\n", __FUNCTION__, __LINE__);
+ fpga_add (fpga_xilinx, &fpga[1]);
+ }
+
+ return 0;
+}
+#endif /* CONFIG_FPGA */
diff --git a/board/esd/pmc440/fpga.h b/board/esd/pmc440/fpga.h
new file mode 100644
index 0000000..d61a3cf
--- /dev/null
+++ b/board/esd/pmc440/fpga.h
@@ -0,0 +1,47 @@
+/*
+ * (C) Copyright 2007
+ * Matthias Fuchs, esd gmbh germany, matthias.fuchs at esd-electronics.com
+ *
+ * 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
+ */
+
+extern int pmc440_init_fpga(void);
+
+extern int fpga_pgm_fn(int assert_pgm, int flush, int cookie);
+extern int fpga_init_fn(int cookie);
+extern int fpga_err_fn(int cookie);
+extern int fpga_done_fn(int cookie);
+extern int fpga_clk_fn(int assert_clk, int flush, int cookie);
+extern int fpga_cs_fn(int assert_cs, int flush, int cookie);
+extern int fpga_wr_fn(int assert_write, int flush, int cookie);
+extern int fpga_wdata_fn (uchar data, int flush, int cookie);
+extern int fpga_read_data_fn(unsigned char *data, int cookie);
+extern int fpga_write_data_fn(unsigned char data, int flush, int cookie);
+extern int fpga_busy_fn(int cookie);
+extern int fpga_abort_fn(int cookie );
+extern int fpga_pre_config_fn(int cookie );
+extern int fpga_post_config_fn(int cookie );
+
+extern int ngcc_fpga_pgm_fn(int assert_pgm, int flush, int cookie);
+extern int ngcc_fpga_init_fn(int cookie);
+extern int ngcc_fpga_done_fn(int cookie);
+extern int ngcc_fpga_clk_fn(int assert_clk, int flush, int cookie);
+extern int ngcc_fpga_wr_fn(int assert_write, int flush, int cookie);
+extern int ngcc_fpga_pre_config_fn(int cookie );
+extern int ngcc_fpga_post_config_fn(int cookie );
--
1.5.3
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