From: Prabhakar Lad <prabhakar.cse...@gmail.com>
print the clock information while booting causes additional
delay. Implemented the clocks command for printing the CPU,
MPX, DDR and LBC frequency info.
Signed-off-by: Prabhakar Lad <prabhakar.cse...@gmail.com>
---
arch/powerpc/cpu/mpc86xx/cpu.c | 50 ++++++++++++++++++++++++++-------------
1 files changed, 33 insertions(+), 17 deletions(-)
diff --git a/arch/powerpc/cpu/mpc86xx/cpu.c b/arch/powerpc/cpu/mpc86xx/cpu.c
index ffcc8e6..32f9932 100644
--- a/arch/powerpc/cpu/mpc86xx/cpu.c
+++ b/arch/powerpc/cpu/mpc86xx/cpu.c
@@ -46,7 +46,6 @@ void board_reset(void) __attribute__((weak,
alias("__board_reset")));
int
checkcpu(void)
{
- sys_info_t sysinfo;
uint pvr, svr;
uint ver;
uint major, minor;
@@ -88,22 +87,6 @@ checkcpu(void)
printf(", Version: %d.%d, (0x%08x)\n", major, minor, pvr);
- get_sys_info(&sysinfo);
-
- puts("Clock Configuration:\n");
- printf(" CPU:%-4s MHz, ", strmhz(buf1, sysinfo.freqProcessor));
- printf("MPX:%-4s MHz\n", strmhz(buf1, sysinfo.freqSystemBus));
- printf(" DDR:%-4s MHz (%s MT/s data rate), ",
- strmhz(buf1, sysinfo.freqSystemBus / 2),
- strmhz(buf2, sysinfo.freqSystemBus));
-
- if (sysinfo.freqLocalBus > LCRR_CLKDIV) {
- printf("LBC:%-4s MHz\n", strmhz(buf1, sysinfo.freqLocalBus));
- } else {
- printf("LBC: unknown (LCRR[CLKDIV] = 0x%02lx)\n",
- sysinfo.freqLocalBus);
- }
-
puts("L1: D-cache 32 KB enabled\n");
puts(" I-cache 32 KB enabled\n");
@@ -219,3 +202,36 @@ void setup_ddr_bat(phys_addr_t dram_size)
write_bat(DBAT0, batu, CONFIG_SYS_DBAT0L);
write_bat(IBAT0, batu, CONFIG_SYS_IBAT0L);
}
+
+/*
+ * Dump some core clocks.
+ */
+int mpc8xx_showclocks(cmd_tbl_t *cmdtp, int flag, int argc, char * const
argv[])
+{
+ sys_info_t sysinfo;
+
+ get_sys_info(&sysinfo);
+
+ printf(" CPU:%-4s MHz, ", strmhz(buf1, sysinfo.freqProcessor));
+ printf("MPX:%-4s MHz\n", strmhz(buf1, sysinfo.freqSystemBus));
+ printf(" DDR:%-4s MHz (%s MT/s data rate), ",
+ strmhz(buf1, sysinfo.freqSystemBus / 2),
+ strmhz(buf2, sysinfo.freqSystemBus));
+
+ if (sysinfo.freqLocalBus > LCRR_CLKDIV) {
+ printf("LBC:%-4s MHz\n", strmhz(buf1, sysinfo.freqLocalBus));
+ } else {
+ printf("LBC: unknown (LCRR[CLKDIV] = 0x%02lx)\n",
+ sysinfo.freqLocalBus);
+ }
+
+ return 0;
+}
+
+/***************************************************/
+
+U_BOOT_CMD(
+ clocks, CONFIG_SYS_MAXARGS, 1, mpc8xx_showclocks,
+ "Clock Configuration",
+ " clocks"
+);
--
1.7.0.4
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