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Diffstat (limited to 'arch/mips/pnx8550/common/prom.c')
-rw-r--r--arch/mips/pnx8550/common/prom.c128
1 files changed, 128 insertions, 0 deletions
diff --git a/arch/mips/pnx8550/common/prom.c b/arch/mips/pnx8550/common/prom.c
new file mode 100644
index 000000000000..32f70097c3c7
--- /dev/null
+++ b/arch/mips/pnx8550/common/prom.c
@@ -0,0 +1,128 @@
+/*
+ *
+ * Per Hallsmark, per.hallsmark@mvista.com
+ *
+ * Based on jmr3927/common/prom.c
+ *
+ * 2004 (c) MontaVista Software, Inc. This file is licensed under the
+ * terms of the GNU General Public License version 2. This program is
+ * licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/string.h>
+#include <linux/serial_pnx8xxx.h>
+
+#include <asm/bootinfo.h>
+#include <uart.h>
+
+/* #define DEBUG_CMDLINE */
+
+extern int prom_argc;
+extern char **prom_argv, **prom_envp;
+
+typedef struct
+{
+ char *name;
+/* char *val; */
+}t_env_var;
+
+
+char * prom_getcmdline(void)
+{
+ return &(arcs_cmdline[0]);
+}
+
+void __init prom_init_cmdline(void)
+{
+ int i;
+
+ arcs_cmdline[0] = '\0';
+ for (i = 0; i < prom_argc; i++) {
+ strcat(arcs_cmdline, prom_argv[i]);
+ strcat(arcs_cmdline, " ");
+ }
+}
+
+char *prom_getenv(char *envname)
+{
+ /*
+ * Return a pointer to the given environment variable.
+ * Environment variables are stored in the form of "memsize=64".
+ */
+
+ t_env_var *env = (t_env_var *)prom_envp;
+ int i;
+
+ i = strlen(envname);
+
+ while(env->name) {
+ if(strncmp(envname, env->name, i) == 0) {
+ return(env->name + strlen(envname) + 1);
+ }
+ env++;
+ }
+ return(NULL);
+}
+
+inline unsigned char str2hexnum(unsigned char c)
+{
+ if(c >= '0' && c <= '9')
+ return c - '0';
+ if(c >= 'a' && c <= 'f')
+ return c - 'a' + 10;
+ if(c >= 'A' && c <= 'F')
+ return c - 'A' + 10;
+ return 0; /* foo */
+}
+
+inline void str2eaddr(unsigned char *ea, unsigned char *str)
+{
+ int i;
+
+ for(i = 0; i < 6; i++) {
+ unsigned char num;
+
+ if((*str == '.') || (*str == ':'))
+ str++;
+ num = str2hexnum(*str++) << 4;
+ num |= (str2hexnum(*str++));
+ ea[i] = num;
+ }
+}
+
+int get_ethernet_addr(char *ethernet_addr)
+{
+ char *ethaddr_str;
+
+ ethaddr_str = prom_getenv("ethaddr");
+ if (!ethaddr_str) {
+ printk("ethaddr not set in boot prom\n");
+ return -1;
+ }
+ str2eaddr(ethernet_addr, ethaddr_str);
+ return 0;
+}
+
+void __init prom_free_prom_memory(void)
+{
+}
+
+extern int pnx8550_console_port;
+
+/* used by early printk */
+void prom_putchar(char c)
+{
+ if (pnx8550_console_port != -1) {
+ /* Wait until FIFO not full */
+ while( ((ip3106_fifo(UART_BASE, pnx8550_console_port) & PNX8XXX_UART_FIFO_TXFIFO) >> 16) >= 16)
+ ;
+ /* Send one char */
+ ip3106_fifo(UART_BASE, pnx8550_console_port) = c;
+ }
+}
+
+EXPORT_SYMBOL(get_ethernet_addr);
+EXPORT_SYMBOL(str2eaddr);