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-rw-r--r--arch/arm/cpu/armv7/s5pc2xx/Makefile42
-rw-r--r--arch/arm/cpu/armv7/s5pc2xx/clock.c220
-rw-r--r--arch/arm/cpu/armv7/s5pc2xx/soc.c30
3 files changed, 292 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/s5pc2xx/Makefile b/arch/arm/cpu/armv7/s5pc2xx/Makefile
new file mode 100644
index 0000000000..124c38018c
--- /dev/null
+++ b/arch/arm/cpu/armv7/s5pc2xx/Makefile
@@ -0,0 +1,42 @@
+#
+# Copyright (C) 2009 Samsung Electronics
+# Minkyu Kang <mk7.kang@samsung.com>
+#
+# 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., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+include $(TOPDIR)/config.mk
+
+LIB = $(obj)lib$(SOC).o
+
+COBJS += clock.o soc.o
+
+SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS := $(addprefix $(obj),$(COBJS) $(SOBJS))
+
+all: $(obj).depend $(LIB)
+
+$(LIB): $(OBJS)
+ $(call cmd_link_o_target, $(OBJS))
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/arch/arm/cpu/armv7/s5pc2xx/clock.c b/arch/arm/cpu/armv7/s5pc2xx/clock.c
new file mode 100644
index 0000000000..450a630486
--- /dev/null
+++ b/arch/arm/cpu/armv7/s5pc2xx/clock.c
@@ -0,0 +1,220 @@
+/*
+ * Copyright (C) 2010 Samsung Electronics
+ * Minkyu Kang <mk7.kang@samsung.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/clk.h>
+
+#ifndef CONFIG_SYS_CLK_FREQ_C210
+#define CONFIG_SYS_CLK_FREQ_C210 24000000
+#endif
+
+/* s5pc210: return pll clock frequency */
+static unsigned long s5pc210_get_pll_clk(int pllreg)
+{
+ struct s5pc210_clock *clk =
+ (struct s5pc210_clock *)samsung_get_base_clock();
+ unsigned long r, m, p, s, k = 0, mask, fout;
+ unsigned int freq;
+
+ switch (pllreg) {
+ case APLL:
+ r = readl(&clk->apll_con0);
+ break;
+ case MPLL:
+ r = readl(&clk->mpll_con0);
+ break;
+ case EPLL:
+ r = readl(&clk->epll_con0);
+ k = readl(&clk->epll_con1);
+ break;
+ case VPLL:
+ r = readl(&clk->vpll_con0);
+ k = readl(&clk->vpll_con1);
+ break;
+ default:
+ printf("Unsupported PLL (%d)\n", pllreg);
+ return 0;
+ }
+
+ /*
+ * APLL_CON: MIDV [25:16]
+ * MPLL_CON: MIDV [25:16]
+ * EPLL_CON: MIDV [24:16]
+ * VPLL_CON: MIDV [24:16]
+ */
+ if (pllreg == APLL || pllreg == MPLL)
+ mask = 0x3ff;
+ else
+ mask = 0x1ff;
+
+ m = (r >> 16) & mask;
+
+ /* PDIV [13:8] */
+ p = (r >> 8) & 0x3f;
+ /* SDIV [2:0] */
+ s = r & 0x7;
+
+ freq = CONFIG_SYS_CLK_FREQ_C210;
+
+ if (pllreg == EPLL) {
+ k = k & 0xffff;
+ /* FOUT = (MDIV + K / 65536) * FIN / (PDIV * 2^SDIV) */
+ fout = (m + k / 65536) * (freq / (p * (1 << s)));
+ } else if (pllreg == VPLL) {
+ k = k & 0xfff;
+ /* FOUT = (MDIV + K / 1024) * FIN / (PDIV * 2^SDIV) */
+ fout = (m + k / 1024) * (freq / (p * (1 << s)));
+ } else {
+ if (s < 1)
+ s = 1;
+ /* FOUT = MDIV * FIN / (PDIV * 2^(SDIV - 1)) */
+ fout = m * (freq / (p * (1 << (s - 1))));
+ }
+
+ return fout;
+}
+
+/* s5pc210: return ARM clock frequency */
+static unsigned long s5pc210_get_arm_clk(void)
+{
+ struct s5pc210_clock *clk =
+ (struct s5pc210_clock *)samsung_get_base_clock();
+ unsigned long div;
+ unsigned long dout_apll;
+ unsigned int apll_ratio;
+
+ div = readl(&clk->div_cpu0);
+
+ /* APLL_RATIO: [26:24] */
+ apll_ratio = (div >> 24) & 0x7;
+
+ dout_apll = get_pll_clk(APLL) / (apll_ratio + 1);
+
+ return dout_apll;
+}
+
+/* s5pc210: return pwm clock frequency */
+static unsigned long s5pc210_get_pwm_clk(void)
+{
+ struct s5pc210_clock *clk =
+ (struct s5pc210_clock *)samsung_get_base_clock();
+ unsigned long pclk, sclk;
+ unsigned int sel;
+ unsigned int ratio;
+
+ /*
+ * CLK_SRC_PERIL0
+ * PWM_SEL [27:24]
+ */
+ sel = readl(&clk->src_peril0);
+ sel = (sel >> 24) & 0xf;
+
+ if (sel == 0x6)
+ sclk = get_pll_clk(MPLL);
+ else if (sel == 0x7)
+ sclk = get_pll_clk(EPLL);
+ else if (sel == 0x8)
+ sclk = get_pll_clk(VPLL);
+ else
+ return 0;
+
+ /*
+ * CLK_DIV_PERIL3
+ * PWM_RATIO [3:0]
+ */
+ ratio = readl(&clk->div_peril3);
+ ratio = ratio & 0xf;
+
+ pclk = sclk / (ratio + 1);
+
+ return pclk;
+}
+
+/* s5pc210: return uart clock frequency */
+static unsigned long s5pc210_get_uart_clk(int dev_index)
+{
+ struct s5pc210_clock *clk =
+ (struct s5pc210_clock *)samsung_get_base_clock();
+ unsigned long uclk, sclk;
+ unsigned int sel;
+ unsigned int ratio;
+
+ /*
+ * CLK_SRC_PERIL0
+ * UART0_SEL [3:0]
+ * UART1_SEL [7:4]
+ * UART2_SEL [8:11]
+ * UART3_SEL [12:15]
+ * UART4_SEL [16:19]
+ * UART5_SEL [23:20]
+ */
+ sel = readl(&clk->src_peril0);
+ sel = (sel >> (dev_index << 2)) & 0xf;
+
+ if (sel == 0x6)
+ sclk = get_pll_clk(MPLL);
+ else if (sel == 0x7)
+ sclk = get_pll_clk(EPLL);
+ else if (sel == 0x8)
+ sclk = get_pll_clk(VPLL);
+ else
+ return 0;
+
+ /*
+ * CLK_DIV_PERIL0
+ * UART0_RATIO [3:0]
+ * UART1_RATIO [7:4]
+ * UART2_RATIO [8:11]
+ * UART3_RATIO [12:15]
+ * UART4_RATIO [16:19]
+ * UART5_RATIO [23:20]
+ */
+ ratio = readl(&clk->div_peril0);
+ ratio = (ratio >> (dev_index << 2)) & 0xf;
+
+ uclk = sclk / (ratio + 1);
+
+ return uclk;
+}
+
+unsigned long get_pll_clk(int pllreg)
+{
+ return s5pc210_get_pll_clk(pllreg);
+}
+
+unsigned long get_arm_clk(void)
+{
+ return s5pc210_get_arm_clk();
+}
+
+unsigned long get_pwm_clk(void)
+{
+ return s5pc210_get_pwm_clk();
+}
+
+unsigned long get_uart_clk(int dev_index)
+{
+ return s5pc210_get_uart_clk(dev_index);
+}
diff --git a/arch/arm/cpu/armv7/s5pc2xx/soc.c b/arch/arm/cpu/armv7/s5pc2xx/soc.c
new file mode 100644
index 0000000000..dcfcec22dc
--- /dev/null
+++ b/arch/arm/cpu/armv7/s5pc2xx/soc.c
@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2010 Samsung Electronics.
+ * Minkyu Kang <mk7.kang@samsung.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/io.h>
+
+void reset_cpu(ulong addr)
+{
+ writel(0x1, samsung_get_base_swreset());
+}
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