diff options
Diffstat (limited to 'target/linux/layerscape/patches-4.14/814-ls2-console-support-layerscape.patch')
-rw-r--r-- | target/linux/layerscape/patches-4.14/814-ls2-console-support-layerscape.patch | 316 |
1 files changed, 0 insertions, 316 deletions
diff --git a/target/linux/layerscape/patches-4.14/814-ls2-console-support-layerscape.patch b/target/linux/layerscape/patches-4.14/814-ls2-console-support-layerscape.patch deleted file mode 100644 index 090986bd84..0000000000 --- a/target/linux/layerscape/patches-4.14/814-ls2-console-support-layerscape.patch +++ /dev/null @@ -1,316 +0,0 @@ -From c64d8ab6260330fa2fe9a2d676256697e4e2a83c Mon Sep 17 00:00:00 2001 -From: Biwen Li <biwen.li@nxp.com> -Date: Tue, 30 Oct 2018 18:26:44 +0800 -Subject: [PATCH 31/40] ls2-console: support layerscape -This is an integrated patch of ls2-console for - layerscape - -Signed-off-by: Razvan Stefanescu <razvan.stefanescu@nxp.com> -Signed-off-by: Biwen Li <biwen.li@nxp.com> ---- - drivers/soc/fsl/ls2-console/Kconfig | 4 + - drivers/soc/fsl/ls2-console/Makefile | 1 + - drivers/soc/fsl/ls2-console/ls2-console.c | 284 ++++++++++++++++++++++ - 3 files changed, 289 insertions(+) - create mode 100644 drivers/soc/fsl/ls2-console/Kconfig - create mode 100644 drivers/soc/fsl/ls2-console/Makefile - create mode 100644 drivers/soc/fsl/ls2-console/ls2-console.c - ---- /dev/null -+++ b/drivers/soc/fsl/ls2-console/Kconfig -@@ -0,0 +1,4 @@ -+config FSL_LS2_CONSOLE -+ tristate "Layerscape MC and AIOP console support" -+ depends on ARCH_LAYERSCAPE -+ default y ---- /dev/null -+++ b/drivers/soc/fsl/ls2-console/Makefile -@@ -0,0 +1 @@ -+obj-$(CONFIG_FSL_LS2_CONSOLE) += ls2-console.o ---- /dev/null -+++ b/drivers/soc/fsl/ls2-console/ls2-console.c -@@ -0,0 +1,284 @@ -+/* Copyright 2015-2016 Freescale Semiconductor Inc. -+ * -+ * Redistribution and use in source and binary forms, with or without -+ * modification, are permitted provided that the following conditions are met: -+ * * Redistributions of source code must retain the above copyright -+ * notice, this list of conditions and the following disclaimer. -+ * * Redistributions in binary form must reproduce the above copyright -+ * notice, this list of conditions and the following disclaimer in the -+ * documentation and/or other materials provided with the distribution. -+ * * Neither the name of the above-listed copyright holders nor the -+ * names of any contributors may be used to endorse or promote products -+ * derived from this software without specific prior written permission. -+ * -+ * -+ * ALTERNATIVELY, this software may be distributed under the terms of the -+ * GNU General Public License ("GPL") as published by the Free Software -+ * Foundation, either version 2 of that License or (at your option) any -+ * later version. -+ * -+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" -+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE -+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE -+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE -+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR -+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF -+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS -+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN -+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) -+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE -+ * POSSIBILITY OF SUCH DAMAGE. -+ */ -+ -+#include <linux/miscdevice.h> -+#include <linux/uaccess.h> -+#include <linux/poll.h> -+#include <linux/compat.h> -+#include <linux/module.h> -+#include <linux/slab.h> -+#include <linux/io.h> -+ -+/* SoC address for the MC firmware base low/high registers */ -+#define SOC_CCSR_MC_FW_BASE_ADDR_REGS 0x8340020 -+#define SOC_CCSR_MC_FW_BASE_ADDR_REGS_SIZE 2 -+/* MC firmware base low/high registers indexes */ -+#define MCFBALR_OFFSET 0 -+#define MCFBAHR_OFFSET 1 -+ -+/* Bit mask used to obtain the most significant part of the MC base address */ -+#define MC_FW_HIGH_ADDR_MASK 0x1FFFF -+/* Bit mask used to obtain the least significant part of the MC base address */ -+#define MC_FW_LOW_ADDR_MASK 0xE0000000 -+ -+#define MC_BUFFER_OFFSET 0x01000000 -+#define MC_BUFFER_SIZE (1024*1024*16) -+#define MC_OFFSET_DELTA (MC_BUFFER_OFFSET) -+ -+#define AIOP_BUFFER_OFFSET 0x06000000 -+#define AIOP_BUFFER_SIZE (1024*1024*16) -+#define AIOP_OFFSET_DELTA (0) -+ -+struct log_header { -+ char magic_word[8]; /* magic word */ -+ uint32_t buf_start; /* holds the 32-bit little-endian -+ * offset of the start of the buffer -+ */ -+ uint32_t buf_length; /* holds the 32-bit little-endian -+ * length of the buffer -+ */ -+ uint32_t last_byte; /* holds the 32-bit little-endian offset -+ * of the byte after the last byte that -+ * was written -+ */ -+ char reserved[44]; -+}; -+ -+#define LOG_HEADER_FLAG_BUFFER_WRAPAROUND 0x80000000 -+#define LOG_VERSION_MAJOR 1 -+#define LOG_VERSION_MINOR 0 -+ -+ -+#define invalidate(p) { asm volatile("dc ivac, %0" : : "r" (p) : "memory"); } -+ -+struct console_data { -+ char *map_addr; -+ struct log_header *hdr; -+ char *start_addr; /* Start of buffer */ -+ char *end_addr; /* End of buffer */ -+ char *end_of_data; /* Current end of data */ -+ char *cur_ptr; /* Last data sent to console */ -+}; -+ -+#define LAST_BYTE(a) ((a) & ~(LOG_HEADER_FLAG_BUFFER_WRAPAROUND)) -+ -+static inline void __adjust_end(struct console_data *cd) -+{ -+ cd->end_of_data = cd->start_addr -+ + LAST_BYTE(le32_to_cpu(cd->hdr->last_byte)); -+} -+ -+static inline void adjust_end(struct console_data *cd) -+{ -+ invalidate(cd->hdr); -+ __adjust_end(cd); -+} -+ -+static inline uint64_t get_mc_fw_base_address(void) -+{ -+ u32 *mcfbaregs = (u32 *) ioremap(SOC_CCSR_MC_FW_BASE_ADDR_REGS, -+ SOC_CCSR_MC_FW_BASE_ADDR_REGS_SIZE); -+ u64 mcfwbase = 0ULL; -+ -+ mcfwbase = readl(mcfbaregs + MCFBAHR_OFFSET) & MC_FW_HIGH_ADDR_MASK; -+ mcfwbase <<= 32; -+ mcfwbase |= readl(mcfbaregs + MCFBALR_OFFSET) & MC_FW_LOW_ADDR_MASK; -+ iounmap(mcfbaregs); -+ pr_info("fsl-ls2-console: MC base address at 0x%016llx\n", mcfwbase); -+ return mcfwbase; -+} -+ -+static int fsl_ls2_generic_console_open(struct inode *node, struct file *fp, -+ u64 offset, u64 size, -+ uint8_t *emagic, uint8_t magic_len, -+ u32 offset_delta) -+{ -+ struct console_data *cd; -+ uint8_t *magic; -+ uint32_t wrapped; -+ -+ cd = kmalloc(sizeof(*cd), GFP_KERNEL); -+ if (cd == NULL) -+ return -ENOMEM; -+ fp->private_data = cd; -+ cd->map_addr = ioremap(get_mc_fw_base_address() + offset, size); -+ -+ cd->hdr = (struct log_header *) cd->map_addr; -+ invalidate(cd->hdr); -+ -+ magic = cd->hdr->magic_word; -+ if (memcmp(magic, emagic, magic_len)) { -+ pr_info("magic didn't match!\n"); -+ pr_info("expected: %02x %02x %02x %02x %02x %02x %02x %02x\n", -+ emagic[0], emagic[1], emagic[2], emagic[3], -+ emagic[4], emagic[5], emagic[6], emagic[7]); -+ pr_info(" seen: %02x %02x %02x %02x %02x %02x %02x %02x\n", -+ magic[0], magic[1], magic[2], magic[3], -+ magic[4], magic[5], magic[6], magic[7]); -+ kfree(cd); -+ iounmap(cd->map_addr); -+ return -EIO; -+ } -+ -+ cd->start_addr = cd->map_addr -+ + le32_to_cpu(cd->hdr->buf_start) - offset_delta; -+ cd->end_addr = cd->start_addr + le32_to_cpu(cd->hdr->buf_length); -+ -+ wrapped = le32_to_cpu(cd->hdr->last_byte) -+ & LOG_HEADER_FLAG_BUFFER_WRAPAROUND; -+ -+ __adjust_end(cd); -+ if (wrapped && (cd->end_of_data != cd->end_addr)) -+ cd->cur_ptr = cd->end_of_data+1; -+ else -+ cd->cur_ptr = cd->start_addr; -+ -+ return 0; -+} -+ -+static int fsl_ls2_mc_console_open(struct inode *node, struct file *fp) -+{ -+ uint8_t magic_word[] = { 0, 1, 'C', 'M' }; -+ -+ return fsl_ls2_generic_console_open(node, fp, -+ MC_BUFFER_OFFSET, MC_BUFFER_SIZE, -+ magic_word, sizeof(magic_word), -+ MC_OFFSET_DELTA); -+} -+ -+static int fsl_ls2_aiop_console_open(struct inode *node, struct file *fp) -+{ -+ uint8_t magic_word[] = { 'P', 'O', 'I', 'A' }; -+ -+ return fsl_ls2_generic_console_open(node, fp, -+ AIOP_BUFFER_OFFSET, AIOP_BUFFER_SIZE, -+ magic_word, sizeof(magic_word), -+ AIOP_OFFSET_DELTA); -+} -+ -+static int fsl_ls2_console_close(struct inode *node, struct file *fp) -+{ -+ struct console_data *cd = fp->private_data; -+ -+ iounmap(cd->map_addr); -+ kfree(cd); -+ return 0; -+} -+ -+ssize_t fsl_ls2_console_read(struct file *fp, char __user *buf, size_t count, -+ loff_t *f_pos) -+{ -+ struct console_data *cd = fp->private_data; -+ size_t bytes = 0; -+ char data; -+ -+ /* Check if we need to adjust the end of data addr */ -+ adjust_end(cd); -+ -+ while ((count != bytes) && (cd->end_of_data != cd->cur_ptr)) { -+ if (((u64)cd->cur_ptr) % 64 == 0) -+ invalidate(cd->cur_ptr); -+ -+ data = *(cd->cur_ptr); -+ if (copy_to_user(&buf[bytes], &data, 1)) -+ return -EFAULT; -+ cd->cur_ptr++; -+ if (cd->cur_ptr >= cd->end_addr) -+ cd->cur_ptr = cd->start_addr; -+ ++bytes; -+ } -+ return bytes; -+} -+ -+static const struct file_operations fsl_ls2_mc_console_fops = { -+ .owner = THIS_MODULE, -+ .open = fsl_ls2_mc_console_open, -+ .release = fsl_ls2_console_close, -+ .read = fsl_ls2_console_read, -+}; -+ -+static struct miscdevice fsl_ls2_mc_console_dev = { -+ .minor = MISC_DYNAMIC_MINOR, -+ .name = "fsl_mc_console", -+ .fops = &fsl_ls2_mc_console_fops -+}; -+ -+static const struct file_operations fsl_ls2_aiop_console_fops = { -+ .owner = THIS_MODULE, -+ .open = fsl_ls2_aiop_console_open, -+ .release = fsl_ls2_console_close, -+ .read = fsl_ls2_console_read, -+}; -+ -+static struct miscdevice fsl_ls2_aiop_console_dev = { -+ .minor = MISC_DYNAMIC_MINOR, -+ .name = "fsl_aiop_console", -+ .fops = &fsl_ls2_aiop_console_fops -+}; -+ -+static int __init fsl_ls2_console_init(void) -+{ -+ int err = 0; -+ -+ pr_info("Freescale LS2 console driver\n"); -+ err = misc_register(&fsl_ls2_mc_console_dev); -+ if (err) { -+ pr_err("fsl_mc_console: cannot register device\n"); -+ return err; -+ } -+ pr_info("fsl-ls2-console: device %s registered\n", -+ fsl_ls2_mc_console_dev.name); -+ -+ err = misc_register(&fsl_ls2_aiop_console_dev); -+ if (err) { -+ pr_err("fsl_aiop_console: cannot register device\n"); -+ return err; -+ } -+ pr_info("fsl-ls2-console: device %s registered\n", -+ fsl_ls2_aiop_console_dev.name); -+ -+ return 0; -+} -+ -+static void __exit fsl_ls2_console_exit(void) -+{ -+ misc_deregister(&fsl_ls2_mc_console_dev); -+ -+ misc_deregister(&fsl_ls2_aiop_console_dev); -+} -+ -+module_init(fsl_ls2_console_init); -+module_exit(fsl_ls2_console_exit); -+ -+MODULE_AUTHOR("Roy Pledge <roy.pledge@freescale.com>"); -+MODULE_LICENSE("Dual BSD/GPL"); -+MODULE_DESCRIPTION("Freescale LS2 console driver"); |