arm: tegra: p1852: Add proc interface for board specific info

1) /proc/board_serial will have the board serial number.
2) /proc/skuinfo will have 18 character sku information.
3) /proc/skuver will have 2 character sku version number.
4) /proc/prodinfo will have product information
5) /proc/prodver will have product version number.

bug 931053

Change-Id: I7daccf932d3ee55b13c89eb4aaa519f51d8dba3e
Signed-off-by: Bob Johnston <bjohnston@nvidia.com>
Reviewed-on: http://git-master/r/90378
Reviewed-by: Simone Willett <swillett@nvidia.com>
Tested-by: Simone Willett <swillett@nvidia.com>

4 files changed, 204 insertions, 0 deletions

diff --git a/arch/arm/mach-tegra/Makefile b/arch/arm/mach-tegra/Makefile
index 10aea1c8aa66..c54d056bb801 100644
--- a/arch/arm/mach-tegra/Makefile
+++ b/arch/arm/mach-tegra/Makefile
@@ -3,6 +3,7 @@ GCOV_PROFILE := y
 obj-y                                   += ahb.o
 obj-y                                   += apbio.o
 obj-y                                   += common.o
+obj-y                                   += board-info.o
 obj-$(CONFIG_ARCH_TEGRA_2x_SOC)         += common-t2.o
 obj-$(CONFIG_ARCH_TEGRA_3x_SOC)         += common-t3.o
 obj-y                                   += io.o
diff --git a/arch/arm/mach-tegra/board-info.c b/arch/arm/mach-tegra/board-info.c
new file mode 100644
index 000000000000..1bcd0d52bd24
--- /dev/null
+++ b/arch/arm/mach-tegra/board-info.c
@@ -0,0 +1,201 @@
+/*
+ * arch/arm/mach-tegra/board-info.c
+ *
+ * File to contain changes for sku id, serial id, chip id, etc.
+ *
+ * Copyright (c) 2010-2012, NVIDIA Corporation.
+ *
+ * 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include "board.h"
+
+/* skuinfo is 18 character long xxx-xxxxx-xxxx-xxx
+ *so buffer size is set to 18+1 */
+#define SKUINFO_BUF_SIZE 19
+/* skuver is 2 character long XX so buffer size is set to 2+1 */
+#define SKUVER_BUF_SIZE 3
+
+/* prodinfo is 18 character long xxx-xxxxx-xxxx-xxx
+ * so buffer size is set to 18+1 */
+#define PRODINFO_BUF_SIZE 19
+/* prodver is 2 character long XX so buffer size is set to 2+1 */
+#define PRODVER_BUF_SIZE 3
+
+static unsigned int board_serial_low;
+static unsigned int board_serial_high;
+static char prodinfo_buffer[PRODINFO_BUF_SIZE];
+static char prodver_buffer[PRODVER_BUF_SIZE];
+static char skuinfo_buffer[SKUINFO_BUF_SIZE];
+static char skuver_buffer[SKUVER_BUF_SIZE];
+
+static int __init sku_info_setup(char *line)
+{
+	memcpy(skuinfo_buffer, line, SKUINFO_BUF_SIZE);
+	return 1;
+}
+
+__setup("nvsku=", sku_info_setup);
+
+static int __init sku_ver_setup(char *line)
+{
+	memcpy(skuver_buffer, line, SKUVER_BUF_SIZE);
+	return 1;
+}
+
+__setup("SkuVer=", sku_ver_setup);
+
+static int __init prod_info_setup(char *line)
+{
+	memcpy(prodinfo_buffer, line, PRODINFO_BUF_SIZE);
+	return 1;
+}
+
+__setup("ProdInfo=", prod_info_setup);
+
+static int __init prod_ver_setup(char *line)
+{
+	memcpy(prodver_buffer, line, PRODVER_BUF_SIZE);
+	return 1;
+}
+
+__setup("ProdVer=", prod_ver_setup);
+
+static int read_skuinfo_proc_show(struct seq_file *m, void *v)
+{
+	seq_printf(m, "%s\n", skuinfo_buffer);
+	return 0;
+}
+
+static int read_skuinfo_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, read_skuinfo_proc_show, NULL);
+}
+
+static const struct file_operations read_skuinfo_proc_fops = {
+	.open = read_skuinfo_proc_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+};
+
+static int read_skuver_proc_show(struct seq_file *m, void *v)
+{
+	seq_printf(m, "%s\n", skuver_buffer);
+	return 0;
+}
+
+static int read_skuver_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, read_skuver_proc_show, NULL);
+}
+
+static const struct file_operations read_skuver_proc_fops = {
+	.open = read_skuver_proc_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+};
+
+static int read_serialinfo_proc_show(struct seq_file *m, void *v)
+{
+	seq_printf(m, "%013llu\n",
+		   (((unsigned long long int)board_serial_high) << 32) |
+		   board_serial_low);
+	return 0;
+}
+
+static int read_serialinfo_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, read_serialinfo_proc_show, NULL);
+}
+
+static const struct file_operations read_serialinfo_proc_fops = {
+	.open = read_serialinfo_proc_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+};
+
+static int read_prodinfo_proc_show(struct seq_file *m, void *v)
+{
+	seq_printf(m, "%s\n", prodinfo_buffer);
+	return 0;
+}
+
+static int read_prodinfo_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, read_prodinfo_proc_show, NULL);
+}
+
+static const struct file_operations read_prodinfo_proc_fops = {
+	.open = read_prodinfo_proc_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+};
+
+static int read_prodver_proc_show(struct seq_file *m, void *v)
+{
+	seq_printf(m, "%s\n", prodver_buffer);
+	return 0;
+}
+
+static int read_prodver_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, read_prodver_proc_show, NULL);
+}
+
+static const struct file_operations read_prodver_proc_fops = {
+	.open = read_prodver_proc_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+};
+
+int __init tegra_init_board_info(void)
+{
+	board_serial_low = system_serial_low;
+	board_serial_high = system_serial_high;
+
+	if (!proc_create("board_serial", 0, NULL, &read_serialinfo_proc_fops)) {
+		printk(KERN_ERR "Can't create proc entry for board_serial!\n");
+		return -1;
+	}
+
+	if (!proc_create("skuinfo", 0, NULL, &read_skuinfo_proc_fops)) {
+		printk(KERN_ERR "Can't create proc entry for skuinfo!\n");
+		return -1;
+	}
+
+	if (!proc_create("skuver", 0, NULL, &read_skuver_proc_fops)) {
+		printk(KERN_ERR "Can't create proc entry for skuver!\n");
+		return -1;
+	}
+
+	if (!proc_create("prodinfo", 0, NULL, &read_prodinfo_proc_fops)) {
+		printk(KERN_ERR "Can't create proc entry for prodinfo!\n");
+		return -1;
+	}
+
+	if (!proc_create("prodver", 0, NULL, &read_prodver_proc_fops)) {
+		printk(KERN_ERR "Can't create proc entry for prodver!\n");
+		return -1;
+	}
+
+	return 0;
+}
diff --git a/arch/arm/mach-tegra/board-p1852.c b/arch/arm/mach-tegra/board-p1852.c
index b53f9a7311f4..c9b48117b5db 100644
--- a/arch/arm/mach-tegra/board-p1852.c
+++ b/arch/arm/mach-tegra/board-p1852.c
@@ -418,6 +418,7 @@ static void p1852_nor_init(void)
 
 static void __init tegra_p1852_init(void)
 {
+	tegra_init_board_info();
 	tegra_clk_init_from_table(p1852_clk_init_table);
 	p1852_pinmux_init();
 	p1852_i2c_init();
diff --git a/arch/arm/mach-tegra/board.h b/arch/arm/mach-tegra/board.h
index 7a4f418eabb8..e17ee87aec15 100644
--- a/arch/arm/mach-tegra/board.h
+++ b/arch/arm/mach-tegra/board.h
@@ -90,6 +90,7 @@ void __init tegra_ram_console_debug_reserve(unsigned long ram_console_size);
 void __init tegra_ram_console_debug_init(void);
 void __init tegra_release_bootloader_fb(void);
 void __init tegra_protected_aperture_init(unsigned long aperture);
+int  __init tegra_init_board_info(void);
 void tegra_move_framebuffer(unsigned long to, unsigned long from,
 	unsigned long size);
 bool is_tegra_debug_uartport_hs(void);