Merge tag 'mips-pull-2021-04-24' of https://source.denx.de/u-boot/custodians/u-boot-mips

- MIPS: octeon: fix minor bugs of initial merge
- MIPS: octeon: add support for QLM and PCI-E controller
- MIPS: octeon: add support for AHCI and SATA
- MIPS: octeon: add E1000 ethernet support
- MIPS: octeon: add Octeon III NIC23 board
- ata/scsi: add support for Big Endian platforms

4 files changed, 573 insertions, 0 deletions

diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index af83e9673a9..6d1c4530ddf 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -788,6 +788,30 @@ config MSM_SERIAL
 	  for example APQ8016 and MSM8916.
 	  Single baudrate is supported in current implementation (115200).
 
+config OCTEON_SERIAL_BOOTCMD
+	bool "MIPS Octeon PCI remote bootcmd input"
+	depends on ARCH_OCTEON
+	depends on DM_SERIAL
+	select SYS_IS_IN_ENV
+	select CONSOLE_MUX
+	help
+	 This driver supports remote input over the PCIe bus from a host
+	 to U-Boot for entering commands.  It is utilized by the host
+	 commands 'oct-remote-load' and 'oct-remote-bootcmd'.
+
+config OCTEON_SERIAL_PCIE_CONSOLE
+	bool "MIPS Octeon PCIe remote console"
+	depends on ARCH_OCTEON
+	depends on (DM_SERIAL && DM_STDIO)
+	select SYS_STDIO_DEREGISTER
+	select SYS_CONSOLE_IS_IN_ENV
+	select CONSOLE_MUX
+	help
+	  This driver supports remote console over the PCIe bus when the
+	  Octeon is running in PCIe target mode. The host program
+	  'oct-remote-console' can be used to connect to this console.
+	  The console number will likely be 0 or 1.
+
 config OMAP_SERIAL
 	bool "Support for OMAP specific UART"
 	depends on DM_SERIAL
diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile
index 92bcb30b850..6c0fdca5861 100644
--- a/drivers/serial/Makefile
+++ b/drivers/serial/Makefile
@@ -66,6 +66,8 @@ obj-$(CONFIG_MSM_SERIAL) += serial_msm.o
 obj-$(CONFIG_MVEBU_A3700_UART) += serial_mvebu_a3700.o
 obj-$(CONFIG_MPC8XX_CONS) += serial_mpc8xx.o
 obj-$(CONFIG_NULLDEV_SERIAL) += serial_nulldev.o
+obj-$(CONFIG_OCTEON_SERIAL_BOOTCMD) += serial_octeon_bootcmd.o
+obj-$(CONFIG_OCTEON_SERIAL_PCIE_CONSOLE) += serial_octeon_pcie_console.o
 obj-$(CONFIG_OWL_SERIAL) += serial_owl.o
 obj-$(CONFIG_OMAP_SERIAL) += serial_omap.o
 obj-$(CONFIG_MTK_SERIAL) += serial_mtk.o
diff --git a/drivers/serial/serial_octeon_bootcmd.c b/drivers/serial/serial_octeon_bootcmd.c
new file mode 100644
index 00000000000..4bcff77eb88
--- /dev/null
+++ b/drivers/serial/serial_octeon_bootcmd.c
@@ -0,0 +1,182 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2019 Marvell International Ltd.
+ * Copyright (C) 2021 Stefan Roese <[email protected]>
+ */
+
+#include <dm.h>
+#include <dm/uclass.h>
+#include <errno.h>
+#include <input.h>
+#include <iomux.h>
+#include <log.h>
+#include <serial.h>
+#include <stdio_dev.h>
+#include <string.h>
+#include <watchdog.h>
+#include <linux/delay.h>
+#include <asm/addrspace.h>
+#include <asm/io.h>
+#include <mach/cvmx-regs.h>
+#include <mach/cvmx-bootmem.h>
+
+#define DRIVER_NAME				"pci-bootcmd"
+
+/*
+ * Important:
+ * This address cannot be changed as the PCI console tool relies on exactly
+ * this value!
+ */
+#define BOOTLOADER_PCI_READ_BUFFER_BASE		0x6c000
+#define BOOTLOADER_PCI_READ_BUFFER_SIZE		256
+#define BOOTLOADER_PCI_WRITE_BUFFER_SIZE	256
+
+#define BOOTLOADER_PCI_READ_BUFFER_STR_LEN	\
+	(BOOTLOADER_PCI_READ_BUFFER_SIZE - 8)
+#define BOOTLOADER_PCI_WRITE_BUFFER_STR_LEN	\
+	(BOOTLOADER_PCI_WRITE_BUFFER_SIZE - 8)
+
+#define BOOTLOADER_PCI_READ_BUFFER_OWNER_ADDR	\
+	(BOOTLOADER_PCI_READ_BUFFER_BASE + 0)
+#define BOOTLOADER_PCI_READ_BUFFER_LEN_ADDR	\
+	(BOOTLOADER_PCI_READ_BUFFER_BASE + 4)
+#define BOOTLOADER_PCI_READ_BUFFER_DATA_ADDR	\
+	(BOOTLOADER_PCI_READ_BUFFER_BASE + 8)
+
+enum octeon_pci_io_buf_owner {
+	/* Must be zero, set when memory cleared */
+	OCTEON_PCI_IO_BUF_OWNER_INVALID = 0,
+	OCTEON_PCI_IO_BUF_OWNER_OCTEON = 1,
+	OCTEON_PCI_IO_BUF_OWNER_HOST = 2,
+};
+
+/* Structure for bootloader PCI IO buffers */
+struct octeon_pci_io_buf {
+	u32 owner;
+	u32 len;
+	char data[0];
+};
+
+struct octeon_bootcmd_priv {
+	bool started;
+	int copy_offset;
+	bool eol;
+	bool unlocked;
+	struct octeon_pci_io_buf *buf;
+};
+
+static int octeon_bootcmd_pending(struct udevice *dev, bool input)
+{
+	struct octeon_bootcmd_priv *priv = dev_get_priv(dev);
+
+	if (!input)
+		return 0;
+
+	if (priv->eol)
+		return 1;
+
+	CVMX_SYNC;
+	if (priv->buf->owner != OCTEON_PCI_IO_BUF_OWNER_OCTEON)
+		return 0;
+
+	if (priv->buf->len > priv->copy_offset &&
+	    (priv->buf->data[priv->copy_offset] != '\0'))
+		return 1;
+
+	return 0;
+}
+
+static int octeon_bootcmd_getc(struct udevice *dev)
+{
+	struct octeon_bootcmd_priv *priv = dev_get_priv(dev);
+	char c;
+
+	/* There's no EOL for boot commands so we fake it. */
+	if (priv->eol) {
+		priv->eol = false;
+		return '\n';
+	}
+
+	while (!octeon_bootcmd_pending(dev, true)) {
+		WATCHDOG_RESET();
+		/*
+		 * ToDo:
+		 * The original code calls octeon_board_poll() here. We may
+		 * need to implement something similar here.
+		 */
+		udelay(100);
+	}
+
+	c = priv->buf->data[priv->copy_offset];
+	priv->buf->data[priv->copy_offset++] = '\0';
+
+	if (priv->copy_offset >= min_t(int, CONFIG_SYS_CBSIZE - 1,
+				       BOOTLOADER_PCI_READ_BUFFER_STR_LEN - 1) ||
+	    (priv->buf->data[priv->copy_offset] == '\0')) {
+		priv->copy_offset = 0;
+		priv->buf->len = 0;
+		priv->buf->owner = OCTEON_PCI_IO_BUF_OWNER_HOST;
+		priv->eol = true;
+		CVMX_SYNC;
+	}
+
+	return c;
+}
+
+static const struct dm_serial_ops octeon_bootcmd_ops = {
+	.getc = octeon_bootcmd_getc,
+	.pending = octeon_bootcmd_pending,
+};
+
+static int octeon_bootcmd_probe(struct udevice *dev)
+{
+	struct octeon_bootcmd_priv *priv = dev_get_priv(dev);
+
+	priv->buf = (void *)CKSEG0ADDR(BOOTLOADER_PCI_READ_BUFFER_BASE);
+	memset(priv->buf, 0, BOOTLOADER_PCI_READ_BUFFER_SIZE);
+	priv->eol = false;
+
+	/*
+	 * When the bootcmd console is first started it is started as locked to
+	 * block any calls sending a command until U-Boot is ready to accept
+	 * commands.  Just before the main loop starts to accept commands the
+	 * bootcmd console is unlocked.
+	 */
+	if (priv->unlocked)
+		priv->buf->owner = OCTEON_PCI_IO_BUF_OWNER_HOST;
+	else
+		priv->buf->owner = OCTEON_PCI_IO_BUF_OWNER_OCTEON;
+
+	debug("%s called, buffer ptr: 0x%p, owner: %s\n", __func__,
+	      priv->buf,
+	      priv->buf->owner == OCTEON_PCI_IO_BUF_OWNER_HOST ?
+	      "host" : "octeon");
+	debug("&priv->copy_offset: 0x%p\n", &priv->copy_offset);
+	CVMX_SYNC;
+
+	/*
+	 * Perhaps reinvestige this: In the original code, "unlocked" etc
+	 * is set in the octeon_pci_bootcmd_unlock() function called very
+	 * late.
+	 */
+	priv->buf->owner = OCTEON_PCI_IO_BUF_OWNER_HOST;
+	priv->unlocked = true;
+	priv->started = true;
+	CVMX_SYNC;
+
+	return 0;
+}
+
+static const struct udevice_id octeon_bootcmd_serial_id[] = {
+	{ .compatible = "marvell,pci-bootcmd", },
+	{ },
+};
+
+U_BOOT_DRIVER(octeon_bootcmd) = {
+	.name = DRIVER_NAME,
+	.id = UCLASS_SERIAL,
+	.ops = &octeon_bootcmd_ops,
+	.of_match = of_match_ptr(octeon_bootcmd_serial_id),
+	.probe = octeon_bootcmd_probe,
+	.priv_auto = sizeof(struct octeon_bootcmd_priv),
+};
diff --git a/drivers/serial/serial_octeon_pcie_console.c b/drivers/serial/serial_octeon_pcie_console.c
new file mode 100644
index 00000000000..c76e787d030
--- /dev/null
+++ b/drivers/serial/serial_octeon_pcie_console.c
@@ -0,0 +1,365 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2019 Marvell International Ltd.
+ * Copyright (C) 2021 Stefan Roese <[email protected]>
+ */
+
+#include <dm.h>
+#include <dm/uclass.h>
+#include <errno.h>
+#include <input.h>
+#include <iomux.h>
+#include <log.h>
+#include <serial.h>
+#include <stdio_dev.h>
+#include <string.h>
+#include <watchdog.h>
+#include <linux/delay.h>
+#include <asm/io.h>
+#include <mach/cvmx-regs.h>
+#include <mach/cvmx-bootmem.h>
+
+#define DRIVER_NAME				"pci-console"
+#define OCTEONTX_PCIE_CONSOLE_NAME_LEN		16
+
+/* Current versions */
+#define OCTEON_PCIE_CONSOLE_MAJOR_VERSION	1
+#define OCTEON_PCIE_CONSOLE_MINOR_VERSION	0
+
+#define OCTEON_PCIE_CONSOLE_BLOCK_NAME		"__pci_console"
+
+/*
+ * Structure that defines a single console.
+ * Note: when read_index == write_index, the buffer is empty.
+ * The actual usable size of each console is console_buf_size -1;
+ */
+struct octeon_pcie_console {
+	u64 input_base_addr;
+	u32 input_read_index;
+	u32 input_write_index;
+	u64 output_base_addr;
+	u32 output_read_index;
+	u32 output_write_index;
+	u32 lock;
+	u32 buf_size;
+};
+
+/*
+ * This is the main container structure that contains all the information
+ * about all PCI consoles. The address of this structure is passed to various
+ * routines that operation on PCI consoles.
+ */
+struct octeon_pcie_console_desc {
+	u32 major_version;
+	u32 minor_version;
+	u32 lock;
+	u32 flags;
+	u32 num_consoles;
+	u32 pad;
+	/* must be 64 bit aligned here... */
+	/* Array of addresses of octeon_pcie_console_t structures */
+	u64 console_addr_array[0];
+	/* Implicit storage for console_addr_array */
+};
+
+struct octeon_pcie_console_priv {
+	struct octeon_pcie_console *console;
+	int console_num;
+	bool console_active;
+};
+
+/* Flag definitions for read/write functions */
+enum {
+	/*
+	 * If set, read/write functions won't block waiting for space or data.
+	 * For reads, 0 bytes may be read, and for writes not all of the
+	 * supplied data may be written.
+	 */
+	OCT_PCI_CON_FLAG_NONBLOCK = 1 << 0,
+};
+
+static int buffer_free_bytes(u32 buffer_size, u32 wr_idx, u32 rd_idx)
+{
+	if (rd_idx >= buffer_size || wr_idx >= buffer_size)
+		return -1;
+
+	return ((buffer_size - 1) - (wr_idx - rd_idx)) % buffer_size;
+}
+
+static int buffer_avail_bytes(u32 buffer_size, u32 wr_idx, u32 rd_idx)
+{
+	if (rd_idx >= buffer_size || wr_idx >= buffer_size)
+		return -1;
+
+	return buffer_size - 1 - buffer_free_bytes(buffer_size, wr_idx, rd_idx);
+}
+
+static int buffer_read_avail(struct udevice *dev, unsigned int console_num)
+{
+	struct octeon_pcie_console_priv *priv = dev_get_priv(dev);
+	struct octeon_pcie_console *cons_ptr = priv->console;
+	int avail;
+
+	avail = buffer_avail_bytes(cons_ptr->buf_size,
+				   cons_ptr->input_write_index,
+				   cons_ptr->input_read_index);
+	if (avail >= 0)
+		return avail;
+
+	return 0;
+}
+
+static int octeon_pcie_console_read(struct udevice *dev,
+				    unsigned int console_num, char *buffer,
+				    int buffer_size, u32 flags)
+{
+	struct octeon_pcie_console_priv *priv = dev_get_priv(dev);
+	struct octeon_pcie_console *cons_ptr = priv->console;
+	int avail;
+	char *buf_ptr;
+	int bytes_read;
+	int read_size;
+
+	buf_ptr = (char *)cvmx_phys_to_ptr(cons_ptr->input_base_addr);
+
+	avail =	buffer_avail_bytes(cons_ptr->buf_size,
+				   cons_ptr->input_write_index,
+				   cons_ptr->input_read_index);
+	if (avail < 0)
+		return avail;
+
+	if (!(flags & OCT_PCI_CON_FLAG_NONBLOCK)) {
+		/* Wait for some data to be available */
+		while (0 == (avail = buffer_avail_bytes(cons_ptr->buf_size,
+							cons_ptr->input_write_index,
+							cons_ptr->input_read_index))) {
+			mdelay(10);
+			WATCHDOG_RESET();
+		}
+	}
+
+	bytes_read = 0;
+
+	/* Don't overflow the buffer passed to us */
+	read_size = min_t(int, avail, buffer_size);
+
+	/* Limit ourselves to what we can input in a contiguous block */
+	if (cons_ptr->input_read_index + read_size >= cons_ptr->buf_size)
+		read_size = cons_ptr->buf_size - cons_ptr->input_read_index;
+
+	memcpy(buffer, buf_ptr + cons_ptr->input_read_index, read_size);
+	cons_ptr->input_read_index =
+		(cons_ptr->input_read_index + read_size) % cons_ptr->buf_size;
+	bytes_read += read_size;
+
+	/* Mark the PCIe console to be active from now on */
+	if (bytes_read)
+		priv->console_active = true;
+
+	return bytes_read;
+}
+
+static int octeon_pcie_console_write(struct udevice *dev,
+				     unsigned int console_num,
+				     const char *buffer,
+				     int bytes_to_write, u32 flags)
+{
+	struct octeon_pcie_console_priv *priv = dev_get_priv(dev);
+	struct octeon_pcie_console *cons_ptr = priv->console;
+	int avail;
+	char *buf_ptr;
+	int bytes_written;
+
+	buf_ptr = (char *)cvmx_phys_to_ptr(cons_ptr->output_base_addr);
+	bytes_written = 0;
+	while (bytes_to_write > 0) {
+		avail = buffer_free_bytes(cons_ptr->buf_size,
+					  cons_ptr->output_write_index,
+					  cons_ptr->output_read_index);
+
+		if (avail > 0) {
+			int write_size = min_t(int, avail, bytes_to_write);
+
+			/*
+			 * Limit ourselves to what we can output in a contiguous
+			 * block
+			 */
+			if (cons_ptr->output_write_index + write_size >=
+			    cons_ptr->buf_size) {
+				write_size = cons_ptr->buf_size -
+					     cons_ptr->output_write_index;
+			}
+
+			memcpy(buf_ptr + cons_ptr->output_write_index,
+			       buffer + bytes_written, write_size);
+			/*
+			 * Make sure data is visible before changing write
+			 * index
+			 */
+			CVMX_SYNCW;
+			cons_ptr->output_write_index =
+				(cons_ptr->output_write_index + write_size) %
+				cons_ptr->buf_size;
+			bytes_to_write -= write_size;
+			bytes_written += write_size;
+		} else if (avail == 0) {
+			/*
+			 * Check to see if we should wait for room, or return
+			 * after a partial write
+			 */
+			if (flags & OCT_PCI_CON_FLAG_NONBLOCK)
+				goto done;
+
+			WATCHDOG_RESET();
+			mdelay(10);	/* Delay if we are spinning */
+		} else {
+			bytes_written = -1;
+			goto done;
+		}
+	}
+
+done:
+	return bytes_written;
+}
+
+static struct octeon_pcie_console_desc *octeon_pcie_console_init(int num_consoles,
+								 int buffer_size)
+{
+	struct octeon_pcie_console_desc *cons_desc_ptr;
+	struct octeon_pcie_console *cons_ptr;
+	s64 addr;
+	u64 avail_addr;
+	int alloc_size;
+	int i;
+
+	/* Compute size required for pci console structure */
+	alloc_size = num_consoles *
+		(buffer_size * 2 + sizeof(struct octeon_pcie_console) +
+		 sizeof(u64)) + sizeof(struct octeon_pcie_console_desc);
+
+	/*
+	 * Allocate memory for the consoles.  This must be in the range
+	 * addresssible by the bootloader.
+	 * Try to do so in a manner which minimizes fragmentation.  We try to
+	 * put it at the top of DDR0 or bottom of DDR2 first, and only do
+	 * generic allocation if those fail
+	 */
+	addr = cvmx_bootmem_phy_named_block_alloc(alloc_size,
+						  OCTEON_DDR0_SIZE - alloc_size - 128,
+						  OCTEON_DDR0_SIZE, 128,
+						  OCTEON_PCIE_CONSOLE_BLOCK_NAME,
+						  CVMX_BOOTMEM_FLAG_END_ALLOC);
+	if (addr < 0) {
+		addr = cvmx_bootmem_phy_named_block_alloc(alloc_size, 0,
+							  0x1fffffff, 128,
+							  OCTEON_PCIE_CONSOLE_BLOCK_NAME,
+							  CVMX_BOOTMEM_FLAG_END_ALLOC);
+	}
+	if (addr < 0)
+		return 0;
+
+	cons_desc_ptr = cvmx_phys_to_ptr(addr);
+
+	/* Clear entire alloc'ed memory */
+	memset(cons_desc_ptr, 0, alloc_size);
+
+	/* Initialize as locked until we are done */
+	cons_desc_ptr->lock = 1;
+	CVMX_SYNCW;
+	cons_desc_ptr->num_consoles = num_consoles;
+	cons_desc_ptr->flags = 0;
+	cons_desc_ptr->major_version = OCTEON_PCIE_CONSOLE_MAJOR_VERSION;
+	cons_desc_ptr->minor_version = OCTEON_PCIE_CONSOLE_MINOR_VERSION;
+
+	avail_addr = addr + sizeof(struct octeon_pcie_console_desc) +
+		num_consoles * sizeof(u64);
+
+	for (i = 0; i < num_consoles; i++) {
+		cons_desc_ptr->console_addr_array[i] = avail_addr;
+		cons_ptr = (void *)cons_desc_ptr->console_addr_array[i];
+		avail_addr += sizeof(struct octeon_pcie_console);
+		cons_ptr->input_base_addr = avail_addr;
+		avail_addr += buffer_size;
+		cons_ptr->output_base_addr = avail_addr;
+		avail_addr += buffer_size;
+		cons_ptr->buf_size = buffer_size;
+	}
+	CVMX_SYNCW;
+	cons_desc_ptr->lock = 0;
+
+	return cvmx_phys_to_ptr(addr);
+}
+
+static int octeon_pcie_console_getc(struct udevice *dev)
+{
+	char c;
+
+	octeon_pcie_console_read(dev, 0, &c, 1, 0);
+	return c;
+}
+
+static int octeon_pcie_console_putc(struct udevice *dev, const char c)
+{
+	struct octeon_pcie_console_priv *priv = dev_get_priv(dev);
+
+	if (priv->console_active)
+		octeon_pcie_console_write(dev, 0, (char *)&c, 1, 0);
+
+	return 0;
+}
+
+static int octeon_pcie_console_pending(struct udevice *dev, bool input)
+{
+	if (input) {
+		udelay(100);
+		return buffer_read_avail(dev, 0) > 0;
+	}
+
+	return 0;
+}
+
+static const struct dm_serial_ops octeon_pcie_console_ops = {
+	.getc = octeon_pcie_console_getc,
+	.putc = octeon_pcie_console_putc,
+	.pending = octeon_pcie_console_pending,
+};
+
+static int octeon_pcie_console_probe(struct udevice *dev)
+{
+	struct octeon_pcie_console_priv *priv = dev_get_priv(dev);
+	struct octeon_pcie_console_desc *cons_desc;
+	int console_count;
+	int console_size;
+	int console_num;
+
+	/*
+	 * Currently only 1 console is supported. Perhaps we need to add
+	 * a console nexus if more than one needs to be supported.
+	 */
+	console_count = 1;
+	console_size = 1024;
+	console_num = 0;
+
+	cons_desc = octeon_pcie_console_init(console_count, console_size);
+	priv->console =
+		cvmx_phys_to_ptr(cons_desc->console_addr_array[console_num]);
+
+	debug("PCI console init succeeded, %d consoles, %d bytes each\n",
+	      console_count, console_size);
+
+	return 0;
+}
+
+static const struct udevice_id octeon_pcie_console_serial_id[] = {
+	{ .compatible = "marvell,pci-console", },
+	{ },
+};
+
+U_BOOT_DRIVER(octeon_pcie_console) = {
+	.name = DRIVER_NAME,
+	.id = UCLASS_SERIAL,
+	.ops = &octeon_pcie_console_ops,
+	.of_match = of_match_ptr(octeon_pcie_console_serial_id),
+	.probe = octeon_pcie_console_probe,
+	.priv_auto = sizeof(struct octeon_pcie_console_priv),
+};