diff --git a/cpu/mpc85xx/cpu.c b/cpu/mpc85xx/cpu.c
index 89800b88448b40e6c1ccf2c02c351176904137db..15ba7f1c5ed25992ae82588bed3ffa282f8449bb 100644
--- a/cpu/mpc85xx/cpu.c
+++ b/cpu/mpc85xx/cpu.c
@@ -77,8 +77,6 @@ struct cpu_type *identify_cpu(u32 ver)
int checkcpu (void)
{
sys_info_t sysinfo;
- uint lcrr; /* local bus clock ratio register */
- uint clkdiv; /* clock divider portion of lcrr */
uint pvr, svr;
uint fam;
uint ver;
@@ -165,30 +163,11 @@ int checkcpu (void)
break;
}
-#if defined(CONFIG_SYS_LBC_LCRR)
- lcrr = CONFIG_SYS_LBC_LCRR;
-#else
- {
- volatile ccsr_lbc_t *lbc = (void *)(CONFIG_SYS_MPC85xx_LBC_ADDR);
-
- lcrr = lbc->lcrr;
- }
-#endif
- clkdiv = lcrr & LCRR_CLKDIV;
- if (clkdiv == 2 || clkdiv == 4 || clkdiv == 8) {
-#if !defined(CONFIG_MPC8540) && !defined(CONFIG_MPC8541) && \
- !defined(CONFIG_MPC8555) && !defined(CONFIG_MPC8560)
- /*
- * Yes, the entire PQ38 family use the same
- * bit-representation for twice the clock divider values.
- */
- clkdiv *= 2;
-#endif
- printf("LBC:%-4s MHz\n",
- strmhz(buf1, sysinfo.freqSystemBus / clkdiv));
- } else {
- printf("LBC: unknown (lcrr: 0x%08x)\n", lcrr);
- }
+ 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);
#ifdef CONFIG_CPM2
printf("CPM: %s MHz\n", strmhz(buf1, sysinfo.freqSystemBus));
diff --git a/cpu/mpc85xx/speed.c b/cpu/mpc85xx/speed.c
index 1e0f4838bf8991273e42270376196ae8f4369bf5..0d55228b641f7ba9cc8b298cc6f8fcd3cac1ec15 100644
--- a/cpu/mpc85xx/speed.c
+++ b/cpu/mpc85xx/speed.c
@@ -28,6 +28,7 @@
#include <common.h>
#include <ppc_asm.tmpl>
#include <asm/processor.h>
+#include <asm/io.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -37,6 +38,7 @@ void get_sys_info (sys_info_t * sysInfo)
{
volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
uint plat_ratio,e500_ratio,half_freqSystemBus;
+ uint lcrr_div;
plat_ratio = (gur->porpllsr) & 0x0000003e;
plat_ratio >>= 1;
@@ -60,6 +62,30 @@ void get_sys_info (sys_info_t * sysInfo)
sysInfo->freqDDRBus = ddr_ratio * CONFIG_DDR_CLK_FREQ;
}
#endif
+
+#if defined(CONFIG_SYS_LBC_LCRR)
+ /* We will program LCRR to this value later */
+ lcrr_div = CONFIG_SYS_LBC_LCRR & LCRR_CLKDIV;
+#else
+ {
+ volatile ccsr_lbc_t *lbc = (void *)(CONFIG_SYS_MPC85xx_LBC_ADDR);
+ lcrr_div = in_be32(&lbc->lcrr) & LCRR_CLKDIV;
+ }
+#endif
+ if (lcrr_div == 2 || lcrr_div == 4 || lcrr_div == 8) {
+#if !defined(CONFIG_MPC8540) && !defined(CONFIG_MPC8541) && \
+ !defined(CONFIG_MPC8555) && !defined(CONFIG_MPC8560)
+ /*
+ * Yes, the entire PQ38 family use the same
+ * bit-representation for twice the clock divider values.
+ */
+ lcrr_div *= 2;
+#endif
+ sysInfo->freqLocalBus = sysInfo->freqSystemBus / lcrr_div;
+ } else {
+ /* In case anyone cares what the unknown value is */
+ sysInfo->freqLocalBus = lcrr_div;
+ }
}
@@ -82,6 +108,7 @@ int get_clocks (void)
gd->cpu_clk = sys_info.freqProcessor;
gd->bus_clk = sys_info.freqSystemBus;
gd->mem_clk = sys_info.freqDDRBus;
+ gd->lbc_clk = sys_info.freqLocalBus;
/*
* The base clock for I2C depends on the actual SOC. Unfortunately,
diff --git a/cpu/mpc86xx/cpu.c b/cpu/mpc86xx/cpu.c
index a179fb3d01f083c173c754f42396ebe4b54a62e2..35680238d2ec6a7ed13ef895b4218a2975311dd8 100644
--- a/cpu/mpc86xx/cpu.c
+++ b/cpu/mpc86xx/cpu.c
@@ -39,8 +39,6 @@ checkcpu(void)
uint pvr, svr;
uint ver;
uint major, minor;
- uint lcrr; /* local bus clock ratio register */
- uint clkdiv; /* clock divider portion of lcrr */
volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
volatile ccsr_gur_t *gur = &immap->im_gur;
@@ -100,23 +98,11 @@ checkcpu(void)
printf("MPX:%4lu MHz, ", sysinfo.freqSystemBus / 1000000);
printf("DDR:%4lu MHz, ", sysinfo.freqSystemBus / 2000000);
-#if defined(CONFIG_SYS_LBC_LCRR)
- lcrr = CONFIG_SYS_LBC_LCRR;
-#else
- {
- volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
- volatile ccsr_lbc_t *lbc = &immap->im_lbc;
-
- lcrr = lbc->lcrr;
- }
-#endif
- clkdiv = lcrr & LCRR_CLKDIV;
- if (clkdiv == 2 || clkdiv == 4 || clkdiv == 8) {
- clkdiv *= 2;
- printf("LBC:%4lu MHz\n",
- sysinfo.freqSystemBus / 1000000 / clkdiv);
+ if (sysinfo.freqLocalBus > LCRR_CLKDIV) {
+ printf("LBC:%4lu MHz\n", sysinfo.freqLocalBus / 1000000);
} else {
- printf(" LBC: unknown (lcrr: 0x%08x)\n", lcrr);
+ printf("LBC: unknown (LCRR[CLKDIV] = 0x%02x)\n",
+ sysinfo.freqLocalBus);
}
puts(" L2: ");
diff --git a/cpu/mpc86xx/speed.c b/cpu/mpc86xx/speed.c
index 415ac9db89055ed4f72d8c1c89bde489083b76ad..64a3479d7e51dc56fd52c194b98c91b7833ed1f9 100644
--- a/cpu/mpc86xx/speed.c
+++ b/cpu/mpc86xx/speed.c
@@ -28,6 +28,7 @@
#include <common.h>
#include <mpc86xx.h>
#include <asm/processor.h>
+#include <asm/io.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -39,6 +40,7 @@ void get_sys_info(sys_info_t *sysInfo)
volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
volatile ccsr_gur_t *gur = &immap->im_gur;
uint plat_ratio, e600_ratio;
+ uint lcrr_div;
plat_ratio = (gur->porpllsr) & 0x0000003e;
plat_ratio >>= 1;
@@ -90,6 +92,22 @@ void get_sys_info(sys_info_t *sysInfo)
sysInfo->freqProcessor = e600_ratio + sysInfo->freqSystemBus;
break;
}
+
+#if defined(CONFIG_SYS_LBC_LCRR)
+ /* We will program LCRR to this value later */
+ lcrr_div = CONFIG_SYS_LBC_LCRR & LCRR_CLKDIV;
+#else
+ {
+ volatile ccsr_lbc_t *lbc = &immap->im_lbc;
+ lcrr_div = in_be32(&lbc->lcrr) & LCRR_CLKDIV;
+ }
+#endif
+ if (lcrr_div == 2 || lcrr_div == 4 || lcrr_div == 8) {
+ sysInfo->freqLocalBus = sysInfo->freqSystemBus / (lcrr_div * 2);
+ } else {
+ /* In case anyone cares what the unknown value is */
+ sysInfo->freqLocalBus = lcrr_div;
+ }
}
@@ -105,6 +123,7 @@ int get_clocks(void)
get_sys_info(&sys_info);
gd->cpu_clk = sys_info.freqProcessor;
gd->bus_clk = sys_info.freqSystemBus;
+ gd->lbc_clk = sys_info.freqLocalBus;
/*
* The base clock for I2C depends on the actual SOC. Unfortunately,
diff --git a/include/asm-ppc/global_data.h b/include/asm-ppc/global_data.h
index aade097fa4edcd88e9701e133ab49dccc12625fd..2bb50b47f518cb4eeb9222bc6ce308e45f6fee4b 100644
--- a/include/asm-ppc/global_data.h
+++ b/include/asm-ppc/global_data.h
@@ -89,6 +89,9 @@ typedef struct global_data {
#if defined(CONFIG_MPC837X) || defined(CONFIG_MPC8536)
u32 sdhc_clk;
#endif
+#if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
+ u32 lbc_clk;
+#endif /* CONFIG_MPC85xx || CONFIG_MPC86xx */
#if defined(CONFIG_MPC83XX) || defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
u32 i2c1_clk;
u32 i2c2_clk;
diff --git a/include/e500.h b/include/e500.h
index 1971eee291af8fa3dbcb53a749581f942020e6d6..9d3c8417c01ae31df7b7479226b44741f9f9e535 100644
--- a/include/e500.h
+++ b/include/e500.h
@@ -13,6 +13,7 @@ typedef struct
unsigned long freqProcessor;
unsigned long freqSystemBus;
unsigned long freqDDRBus;
+ unsigned long freqLocalBus;
} MPC85xx_SYS_INFO;
#endif /* _ASMLANGUAGE */
diff --git a/include/mpc86xx.h b/include/mpc86xx.h
index f119d5bb15fdeb564aaaf177eaf8fefdd80cabfb..a6fdea352fd0c4a052c081ef9cf9b625907a8cb5 100644
--- a/include/mpc86xx.h
+++ b/include/mpc86xx.h
@@ -84,6 +84,7 @@
typedef struct {
unsigned long freqProcessor;
unsigned long freqSystemBus;
+ unsigned long freqLocalBus;
} MPC86xx_SYS_INFO;
#define l1icache_enable icache_enable