summaryrefslogtreecommitdiff
path: root/meta-openbmc-mods/meta-common/recipes-bsp/u-boot/files/0027-CPLD-u-boot-commands-support-for-PFR.patch
diff options
context:
space:
mode:
Diffstat (limited to 'meta-openbmc-mods/meta-common/recipes-bsp/u-boot/files/0027-CPLD-u-boot-commands-support-for-PFR.patch')
-rw-r--r--meta-openbmc-mods/meta-common/recipes-bsp/u-boot/files/0027-CPLD-u-boot-commands-support-for-PFR.patch302
1 files changed, 0 insertions, 302 deletions
diff --git a/meta-openbmc-mods/meta-common/recipes-bsp/u-boot/files/0027-CPLD-u-boot-commands-support-for-PFR.patch b/meta-openbmc-mods/meta-common/recipes-bsp/u-boot/files/0027-CPLD-u-boot-commands-support-for-PFR.patch
deleted file mode 100644
index ac458dd6c..000000000
--- a/meta-openbmc-mods/meta-common/recipes-bsp/u-boot/files/0027-CPLD-u-boot-commands-support-for-PFR.patch
+++ /dev/null
@@ -1,302 +0,0 @@
-From 0083904a79527cef9ca99e516ed015b56a6b95c7 Mon Sep 17 00:00:00 2001
-From: AppaRao Puli <apparao.puli@linux.intel.com>
-Date: Tue, 7 May 2019 11:26:35 +0530
-Subject: [PATCH] CPLD u-boot commands support for PFR
-
-Implemented the cpld command in u-boot for
-communicating with PFR CPLD.
-
-Tested:
-Simulated test on different I2C bus and slave
-as we don't have hardware available yet.
-ast# cpld dump
-*** Dumping CPLD Registers ***
-0x0000 | 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f
-----------------------------------------------------------
-0x0000 | 03 00 00 00 01 09 00 f5 01 09 19 cb 46 4c 45 --
-0x0001 | -- 52 4f 4e 49 43 53 cf 53 2d 31 31 30 30 41 44
-0x0002 | 55 -- 30 2d 32 30 31 ca 47 38 34 30 32 -- 2d --
-0x0003 | 30 37 c2 30 31 cc 45 58 57 44 36 34 39 30 30 38
-.............................
-ast# cpld read 0x00
-CPLD read successful. Reg:0x00 Val:0x03
-ast# cpld write 0x00 0x04
-CPLD write successful. Reg:0x00 Val:0x04
-ast# cpld read 0x00
-CPLD read successful. Reg:0x00 Val:0x04
-ast#
-
-Signed-off-by: AppaRao Puli <apparao.puli@linux.intel.com>
-
-Signed-off-by: Vikram Bodireddy <vikram.bodireddy@intel.com>
----
- cmd/Makefile | 1 +
- cmd/cpld.c | 244 +++++++++++++++++++++++++++++++++++++++++++++++++++
- 2 files changed, 245 insertions(+)
- create mode 100644 cmd/cpld.c
-
-diff --git a/cmd/Makefile b/cmd/Makefile
-index a1731be701..c8ac0af55c 100644
---- a/cmd/Makefile
-+++ b/cmd/Makefile
-@@ -66,6 +66,7 @@ obj-$(CONFIG_CMD_FUSE) += fuse.o
- obj-$(CONFIG_CMD_GETTIME) += gettime.o
- obj-$(CONFIG_CMD_GPIO) += gpio.o
- obj-$(CONFIG_CMD_I2C) += i2c.o
-+obj-$(CONFIG_CMD_I2C) += cpld.o
- obj-$(CONFIG_CMD_IOTRACE) += iotrace.o
- obj-$(CONFIG_CMD_HASH) += hash.o
- obj-$(CONFIG_CMD_IDE) += ide.o
-diff --git a/cmd/cpld.c b/cmd/cpld.c
-new file mode 100644
-index 0000000000..1b225d20dc
---- /dev/null
-+++ b/cmd/cpld.c
-@@ -0,0 +1,244 @@
-+/*
-+ * Copyright (c) 2018-2019 Intel Corporation
-+ * Written by AppaRao Puli <apparao.puli@intel.com>
-+ *
-+ * SPDX-License-Identifier: GPL-2.0+
-+ */
-+
-+#include <common.h>
-+#include <command.h>
-+#include <cli.h>
-+#include <i2c.h>
-+#include <errno.h>
-+#include <linux/compiler.h>
-+
-+#define PFR_CPLD_I2C_BUSNO 4
-+#define PFR_CPLD_SLAVE_ADDR 0x70
-+
-+#define CPLD_READ_TIMEOUT_ATTEMPTS 5
-+
-+/* Some CPLD registers are self cleared after read.
-+ * We should skip them reading to avoid functionality impact.*/
-+/* TODO: Need to get this list from CPLD team. */
-+static uchar cpld_reg_skip_read[] = {};
-+
-+static bool skip_cpld_reg_read(u32 reg)
-+{
-+ int size = ARRAY_SIZE(cpld_reg_skip_read);
-+ for (int i = 0; i < size; i++) {
-+ if (reg == cpld_reg_skip_read[i])
-+ return true;
-+ }
-+
-+ return false;
-+}
-+
-+static int do_cpld_write(cmd_tbl_t *cmdtp, int flag, int argc,
-+ char *const argv[])
-+{
-+ int ret = 0;
-+ int current_bus_no;
-+ u32 reg_addr;
-+ uchar value;
-+ int chip = (PFR_CPLD_SLAVE_ADDR >> 1);
-+
-+ if (argc != 3)
-+ return CMD_RET_USAGE;
-+
-+ reg_addr = simple_strtoul(argv[1], NULL, 16);
-+ if (reg_addr > 0xFF) {
-+ printf("Invalid register. Valid range[0x00-0xFF].");
-+ return CMD_RET_FAILURE;
-+ }
-+ value = simple_strtoul(argv[2], NULL, 16);
-+
-+ /* Get current I2C bus number to restore later. */
-+ current_bus_no = i2c_get_bus_num();
-+
-+ /* Set I2C bus number to PFR CPLD I2C bus. */
-+ ret = i2c_set_bus_num(PFR_CPLD_I2C_BUSNO);
-+ if (ret) {
-+ printf("Failure changing bus number (%d)\n", ret);
-+ ret = CMD_RET_FAILURE;
-+ goto done;
-+ }
-+
-+ ret = i2c_write(chip, reg_addr, 1, &value, 1);
-+ if (ret) {
-+ printf("Error writing the chip: %d\n", ret);
-+ ret = CMD_RET_FAILURE;
-+ goto done;
-+ }
-+
-+ printf("CPLD write successful. Reg:0x%02x Val:0x%02x\n", reg_addr,
-+ value);
-+
-+done:
-+ /* Restore I2C bus number */
-+ if (i2c_set_bus_num(current_bus_no))
-+ printf("Error in restoring bus number.\n");
-+
-+ return ret;
-+}
-+
-+static int do_cpld_read(cmd_tbl_t *cmdtp, int flag, int argc,
-+ char *const argv[])
-+{
-+ int ret = 0;
-+ int current_bus_no;
-+ u32 reg_addr;
-+ uchar value[1];
-+ int chip = (PFR_CPLD_SLAVE_ADDR >> 1);
-+
-+ if (argc != 2)
-+ return CMD_RET_USAGE;
-+
-+ reg_addr = simple_strtoul(argv[1], NULL, 16);
-+ if (reg_addr > 0xFF) {
-+ printf("Invalid register. Valid range[0x00-0xFF].");
-+ return CMD_RET_FAILURE;
-+ }
-+
-+ /* Get current I2C bus number to restore later. */
-+ current_bus_no = i2c_get_bus_num();
-+
-+ /* Set I2C bus number to PFR CPLD I2C bus. */
-+ ret = i2c_set_bus_num(PFR_CPLD_I2C_BUSNO);
-+ if (ret) {
-+ printf("Failure changing bus number (%d)\n", ret);
-+ ret = CMD_RET_FAILURE;
-+ goto done;
-+ }
-+
-+ if (skip_cpld_reg_read(reg_addr)) {
-+ printf("CPLD register(0x%02x) reading is not allowed.\n",
-+ reg_addr);
-+ ret = 0;
-+ goto done;
-+ }
-+
-+ ret = i2c_read(chip, reg_addr, 1, value, 1);
-+ if (ret) {
-+ printf("Error reading the chip: %d\n", ret);
-+ ret = CMD_RET_FAILURE;
-+ goto done;
-+ }
-+
-+ printf("CPLD read successful. Reg:0x%02x Val:0x%02x\n", reg_addr,
-+ value[0]);
-+
-+done:
-+ /* Restore I2C bus number */
-+ if (i2c_set_bus_num(current_bus_no))
-+ printf("Error in restoring bus number.\n");
-+
-+ return ret;
-+}
-+
-+static int do_cpld_dump(cmd_tbl_t *cmdtp, int flag, int argc,
-+ char *const argv[])
-+{
-+ int ret = 0;
-+ int current_bus_no;
-+ u32 reg_addr = 0x00;
-+ uchar value[1];
-+ int chip = (PFR_CPLD_SLAVE_ADDR >> 1);
-+
-+ if (argc != 1)
-+ return CMD_RET_USAGE;
-+
-+ /* Get current I2C bus number to restore later. */
-+ current_bus_no = i2c_get_bus_num();
-+
-+ /* Set I2C bus number to PFR CPLD I2C bus. */
-+ ret = i2c_set_bus_num(PFR_CPLD_I2C_BUSNO);
-+ if (ret) {
-+ printf("Failure changing bus number (%d)\n", ret);
-+ ret = CMD_RET_FAILURE;
-+ goto done;
-+ }
-+
-+ printf("*** Dumping CPLD Registers ***\n", reg_addr, value);
-+ printf("0x%04x | ", reg_addr);
-+ for (int i = 0; i < 0x10; i++)
-+ printf(" %02x", i);
-+ printf("\n----------------------------------------------------------\n");
-+
-+ while (reg_addr <= 0xFF) {
-+ if ((reg_addr % 16) == 0)
-+ printf("0x%04x | ", (reg_addr / 16));
-+
-+ if (skip_cpld_reg_read(reg_addr)) {
-+ printf(" --");
-+ } else {
-+ int timeout = 0;
-+ while (i2c_read(chip, reg_addr, 1, value, 1) != 0) {
-+ if (timeout++ >= CPLD_READ_TIMEOUT_ATTEMPTS) {
-+ printf("\nERROR: Reading the chip: %d\n",
-+ ret);
-+ ret = CMD_RET_FAILURE;
-+ goto done;
-+ }
-+ /* Need delay for I2C devices continous read */
-+ mdelay(3 * timeout);
-+ }
-+ printf(" %02x", value[0]);
-+ }
-+
-+ reg_addr++;
-+ if ((reg_addr % 16) == 0)
-+ printf("\n");
-+ }
-+
-+done:
-+ /* Restore I2C bus number */
-+ if (i2c_set_bus_num(current_bus_no))
-+ printf("Error in restoring bus number.\n");
-+
-+ return ret;
-+}
-+static cmd_tbl_t cmd_cpld_sub[] = {
-+ U_BOOT_CMD_MKENT(dump, 1, 1, do_cpld_dump, "", ""),
-+ U_BOOT_CMD_MKENT(read, 2, 1, do_cpld_read, "", ""),
-+ U_BOOT_CMD_MKENT(write, 3, 1, do_cpld_write, "", "")
-+};
-+
-+/**
-+ * do_cpld() - Handle the "cpld" command-line command
-+ * @cmdtp: Command data struct pointer
-+ * @flag: Command flag
-+ * @argc: Command-line argument count
-+ * @argv: Array of command-line arguments
-+ *
-+ * Returns zero on success, CMD_RET_USAGE in case of misuse and negative
-+ * on error.
-+ */
-+static int do_cpld(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
-+{
-+ cmd_tbl_t *c = NULL;
-+
-+ if (argc < 2)
-+ return CMD_RET_USAGE;
-+
-+ /* Strip off leading 'cpld' command argument */
-+ argc--;
-+ argv++;
-+
-+ if (argc)
-+ c = find_cmd_tbl(argv[0], cmd_cpld_sub,
-+ ARRAY_SIZE(cmd_cpld_sub));
-+
-+ if (c)
-+ return c->cmd(cmdtp, flag, argc, argv);
-+ else
-+ return CMD_RET_USAGE;
-+}
-+
-+#ifdef CONFIG_SYS_LONGHELP
-+static char cpld_help_text[] =
-+ "cpld dump - Dump all CPLD registers.\n"
-+ "cpld read <reg> - Read CPLD register.\n"
-+ "cpld write <reg> <val> - Write CPLD register.\n";
-+#endif
-+
-+U_BOOT_CMD(cpld, 4, 1, do_cpld, "PFR CPLD information", cpld_help_text);
---
-2.17.1
-
generated by cgit v1.2.3 (git 2.39.0) at 2024-09-30 02:44:38 +0300