rk: fiq_debugger: add last_kmsg command

diff --git a/arch/arm/common/fiq_debugger.c b/arch/arm/common/fiq_debugger.c
index da173e47c160e4a1dcf4666d57712b74fd401d2e..bd0e4575fa61aa1c5d8a7c3f29de8e7404dfd3aa 100644 (file)
--- a/arch/arm/common/fiq_debugger.c
+++ b/arch/arm/common/fiq_debugger.c
@@ -220,6 +220,26 @@ static void dump_kernel_log(struct fiq_debugger_state *state)
        oops_in_progress = saved_oip;
 }
 
+#ifdef CONFIG_RK29_LAST_LOG
+#include <linux/ctype.h>
+extern char *last_log_get(unsigned *size);
+static void dump_last_kernel_log(struct fiq_debugger_state *state)
+{
+       unsigned size, i, c;
+       char *s = last_log_get(&size);
+
+       for (i = 0; i < size; i++) {
+               c = s[i];
+               if (c == '\n') {
+                       state->pdata->uart_putc(state->pdev, '\r');
+                       state->pdata->uart_putc(state->pdev, c);
+               } else if (isascii(c) && isprint(c)) {
+                       state->pdata->uart_putc(state->pdev, c);
+               }
+       }
+}
+#endif
+
 static char *mode_name(unsigned cpsr)
 {
        switch (cpsr & MODE_MASK) {
@@ -581,6 +601,9 @@ static char cmd_buf[][16] = {
                {"reboot"},
                {"irqs"},
                {"kmsg"},
+#ifdef CONFIG_RK29_LAST_LOG
+               {"last_kmsg"},
+#endif
                {"version"},
                {"sleep"},
                {"nosleep"},
@@ -600,6 +623,9 @@ static void debug_help(struct fiq_debugger_state *state)
                                " reboot        Reboot\n"
                                " irqs          Interupt status\n"
                                " kmsg          Kernel log\n"
+#ifdef CONFIG_RK29_LAST_LOG
+                               " last_kmsg     Last kernel log\n"
+#endif
                                " version       Kernel version\n");
        debug_printf(state,     " sleep         Allow sleep while in FIQ\n"
                                " nosleep       Disable sleep while in FIQ\n"
@@ -669,6 +695,10 @@ static bool debug_fiq_exec(struct fiq_debugger_state *state,
                dump_irqs(state);
        } else if (!strcmp(cmd, "kmsg")) {
                dump_kernel_log(state);
+#ifdef CONFIG_RK29_LAST_LOG
+       } else if (!strcmp(cmd, "last_kmsg")) {
+               dump_last_kernel_log(state);
+#endif
        } else if (!strcmp(cmd, "version")) {
                debug_printf(state, "%s\n", linux_banner);
        } else if (!strcmp(cmd, "sleep")) {