X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=qemu%2Froms%2Fu-boot%2Fboard%2Fkeymile%2Fkmp204x%2Fpci.c;fp=qemu%2Froms%2Fu-boot%2Fboard%2Fkeymile%2Fkmp204x%2Fpci.c;h=2b0b054a11c71822f76781ab29d02e8079d85536;hb=e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb;hp=0000000000000000000000000000000000000000;hpb=9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00;p=kvmfornfv.git

diff --git a/qemu/roms/u-boot/board/keymile/kmp204x/pci.c b/qemu/roms/u-boot/board/keymile/kmp204x/pci.c
new file mode 100644
index 000000000..2b0b054a1
--- /dev/null
+++ b/qemu/roms/u-boot/board/keymile/kmp204x/pci.c
@@ -0,0 +1,123 @@
+/*
+ * (C) Copyright 2013 Keymile AG
+ * Valentin Longchamp <valentin.longchamp@keymile.com>
+ *
+ * Copyright 2007-2011 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <command.h>
+#include <pci.h>
+#include <asm/fsl_pci.h>
+#include <libfdt.h>
+#include <fdt_support.h>
+#include <asm/fsl_serdes.h>
+#include <asm/errno.h>
+
+#include "kmp204x.h"
+
+#define PROM_SEL_L	11
+/* control the PROM_SEL_L signal*/
+static void toggle_fpga_eeprom_bus(bool cpu_own)
+{
+	qrio_gpio_direction_output(GPIO_A, PROM_SEL_L, !cpu_own);
+}
+
+#define CONF_SEL_L	10
+#define FPGA_PROG_L	19
+#define FPGA_DONE	18
+#define FPGA_INIT_L	17
+
+int trigger_fpga_config(void)
+{
+	int ret = 0, init_l;
+	/* approx 10ms */
+	u32 timeout = 10000;
+
+	/* make sure the FPGA_can access the EEPROM */
+	toggle_fpga_eeprom_bus(false);
+
+	/* assert CONF_SEL_L to be able to drive FPGA_PROG_L */
+	qrio_gpio_direction_output(GPIO_A, CONF_SEL_L, 0);
+
+	/* trigger the config start */
+	qrio_gpio_direction_output(GPIO_A, FPGA_PROG_L, 0);
+
+	/* small delay for INIT_L line */
+	udelay(10);
+
+	/* wait for FPGA_INIT to be asserted */
+	do {
+		init_l = qrio_get_gpio(GPIO_A, FPGA_INIT_L);
+		if (timeout-- == 0) {
+			printf("FPGA_INIT timeout\n");
+			ret = -EFAULT;
+			break;
+		}
+		udelay(10);
+	} while (init_l);
+
+	/* deassert FPGA_PROG, config should start */
+	qrio_set_gpio(GPIO_A, FPGA_PROG_L, 1);
+
+	return ret;
+}
+
+/* poll the FPGA_DONE signal and give the EEPROM back to the QorIQ */
+static int wait_for_fpga_config(void)
+{
+	int ret = 0, done;
+	/* approx 5 s */
+	u32 timeout = 500000;
+
+	printf("PCIe FPGA config:");
+	do {
+		done = qrio_get_gpio(GPIO_A, FPGA_DONE);
+		if (timeout-- == 0) {
+			printf(" FPGA_DONE timeout\n");
+			ret = -EFAULT;
+			goto err_out;
+		}
+		udelay(10);
+	} while (!done);
+
+	printf(" done\n");
+
+err_out:
+	/* deactive CONF_SEL and give the CPU conf EEPROM access */
+	qrio_set_gpio(GPIO_A, CONF_SEL_L, 1);
+	toggle_fpga_eeprom_bus(true);
+
+	return ret;
+}
+
+#define PCIE_SW_RST	14
+#define PEXHC_RST	13
+#define HOOPER_RST	12
+
+void pci_init_board(void)
+{
+	qrio_prstcfg(PCIE_SW_RST, PRSTCFG_POWUP_UNIT_CORE_RST);
+	qrio_prstcfg(PEXHC_RST, PRSTCFG_POWUP_UNIT_CORE_RST);
+	qrio_prstcfg(HOOPER_RST, PRSTCFG_POWUP_UNIT_CORE_RST);
+
+	/* wait for the PCIe FPGA to be configured
+	 * it has been triggered earlier in board_early_init_r */
+	if (wait_for_fpga_config())
+		printf("error finishing PCIe FPGA config\n");
+
+	qrio_prst(PCIE_SW_RST, false, false);
+	qrio_prst(PEXHC_RST, false, false);
+	qrio_prst(HOOPER_RST, false, false);
+	/* Hooper is not direcly PCIe capable */
+	mdelay(50);
+
+	fsl_pcie_init_board(0);
+}
+
+void pci_of_setup(void *blob, bd_t *bd)
+{
+	FT_FSL_PCI_SETUP;
+}