From 7cb22f97ee41f344cf6542c077abf124c38ec5c6 Mon Sep 17 00:00:00 2001
From: wdenk <wdenk>
Date: Sat, 27 Dec 2003 19:24:54 +0000
Subject: [PATCH] * Make CPU clock on ICA-IP board controllable by a "cpuclk"
environment variable which can set to "100", "133", or "150". The CPU clock
will be configured accordingly upon next reboot. Other values are ignored.
In case of an invalid or undefined "cpuclk" value, the compile-time default
CPU clock speed will be used.
* Enable Quad-UART on BMS2003 board (initialize the PCMCIA memory
window that is used to access the UART registers by the Linux driver)
* Patch by Reinhard Meyer, 20 Dec 2003:
Fix clock calculation for the MPC5200 for higher clock frequencies
(above 2**32 / 10 = 429.5 MHz).
---
CHANGELOG | 15 +++
README | 2 +-
board/incaip/memsetup.S | 183 +++++++++++++++++++++++---------
common/cmd_pcmcia.c | 12 +++
cpu/mips/incaip_clock.c | 15 +++
cpu/mpc5xxx/speed.c | 10 +-
include/common.h | 3 +
include/configs/Sandpoint8240.h | 2 +-
include/configs/incaip.h | 9 +-
lib_mips/board.c | 5 +
10 files changed, 191 insertions(+), 65 deletions(-)
diff --git a/CHANGELOG b/CHANGELOG
index 7b2efdcd7e..84e3092e6f 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -2,6 +2,21 @@
Changes since U-Boot 1.0.0:
======================================================================
+* Make CPU clock on ICA-IP board controllable by a "cpuclk"
+ environment variable which can set to "100", "133", or "150". The
+ CPU clock will be configured accordingly upon next reboot. Other
+ values are ignored. In case of an invalid or undefined "cpuclk"
+ value, the compile-time default CPU clock speed will be used.
+
+* Enable Quad-UART on BMS2003 board (initialize the PCMCIA memory
+ window that is used to access the UART registers by the Linux driver)
+
+* Patch by Reinhard Meyer, 20 Dec 2003:
+ Fix clock calculation for the MPC5200 for higher clock frequencies
+ (above 2**32 / 10 = 429.5 MHz).
+
+* Fix CONFIG_PLL_PCI_TO_MEM_MULTIPLIER divider error in SP8240 configuration
+
* Fix IceCube CLKIN configuration (it's 33.000000MHz)
* Add new configuration for IceCube board with DDR memory
diff --git a/README b/README
index dd43d2c2a6..e440e0bdb3 100644
--- a/README
+++ b/README
@@ -3110,7 +3110,7 @@ int main (int argc, char *argv[])
while (learning) {
Read the README file in the top level directory;
- Read http://www.denx.de/re/DPLG.html
+ Read http://www.denx.de/twiki/bin/view/DULG/Manual ;
Read the source, Luke;
}
diff --git a/board/incaip/memsetup.S b/board/incaip/memsetup.S
index 245ab72f90..70d2885bca 100644
--- a/board/incaip/memsetup.S
+++ b/board/incaip/memsetup.S
@@ -55,63 +55,142 @@
#define CGU_MUXCR(value) 0x0014(value)
#define CGU_PLL1SR(value) 0x000C(value)
- .globl memsetup
-memsetup:
+ .set noreorder
- /* EBU Initialization for the Flash CS0 and CS2.
- */
- li t0, EBU_MODUL_BASE
- li t1, 0xA0000041
- sw t1, EBU_ADDSEL0(t0)
+/*
+ * void ebu_init(long)
+ *
+ * a0 has the clock value we are going to run at
+ */
+ .globl ebu_init
+ .ent ebu_init
+ebu_init:
+
+ li t1, EBU_MODUL_BASE
+ li t2, 0xA0000041
+ sw t2, EBU_ADDSEL0(t1)
+ li t2, 0xA0800041
+ sw t2, EBU_ADDSEL2(t1)
+ li t2, 0xBE0000F1
+ sw t2, EBU_ADDSEL1(t1)
+
+ li t3, 100000000
+ beq a0, t3, 1f
+ nop
+ li t3, 133000000
+ beq a0, t3, 2f
+ nop
+ li t3, 150000000
+ beq a0, t3, 2f
+ nop
+ b 3f
+ nop
-#if CPU_CLOCK_RATE==100000000 /* 100 MHz clock for the MIPS core */
- lw t1, EBU_BUSCON0(t0) /* value set up by magic flash word */
- sw t1, EBU_BUSCON2(t0)
-#else /* 150 MHz or 133 MHz */
- li t1, 0x8841417E
- sw t1, EBU_BUSCON0(t0)
- sw t1, EBU_BUSCON2(t0)
-#endif
+ /* 100 MHz */
+1:
+ li t2, 0x8841417D
+ sw t2, EBU_BUSCON0(t1)
+ sw t2, EBU_BUSCON2(t1)
+ li t2, 0x684142BD
+ b 3f
+ sw t2, EBU_BUSCON1(t1) /* delay slot */
+
+ /* 133 or 150 MHz */
+2:
+ li t2, 0x8841417E
+ sw t2, EBU_BUSCON0(t1)
+ sw t2, EBU_BUSCON2(t1)
+ li t2, 0x684143FD
+ sw t2, EBU_BUSCON1(t1)
+3:
+ j ra
+ nop
+
+ .end ebu_init
- li t1, 0xA0800041
- sw t1, EBU_ADDSEL2(t0)
- /* Need to initialize CS1 too, so as to to prevent overlapping with
- * Flash bank 1.
+/*
+ * void cgu_init(long)
+ *
+ * a0 has the clock value
+ */
+ .globl cgu_init
+ .ent cgu_init
+cgu_init:
+
+ li t1, CGU_MODUL_BASE
+
+ li t3, 100000000
+ beq a0, t3, 1f
+ nop
+ li t3, 133000000
+ beq a0, t3, 2f
+ nop
+ li t3, 150000000
+ beq a0, t3, 3f
+ nop
+ b 5f
+ nop
+
+ /* 100 MHz clock */
+1:
+ li t2, 0x80000014
+ sw t2, CGU_DIVCR(t1)
+ li t2, 0x80000000
+ sw t2, CGU_MUXCR(t1)
+ li t2, 0x800B0001
+ b 5f
+ sw t2, CGU_PLL1CR(t1) /* delay slot */
+
+ /* 133 MHz clock */
+2:
+ li t2, 0x80000054
+ sw t2, CGU_DIVCR(t1)
+ li t2, 0x80000000
+ sw t2, CGU_MUXCR(t1)
+ li t2, 0x800B0001
+ b 5f
+ sw t2, CGU_PLL1CR(t1) /* delay slot */
+
+ /* 150 MHz clock */
+3:
+ li t2, 0x80000017
+ sw t2, CGU_DIVCR(t1)
+ li t2, 0xC00B0001
+ sw t2, CGU_PLL1CR(t1)
+ li t3, 0x80000000
+4:
+ lw t2, CGU_PLL1SR(t1)
+ and t2, t2, t3
+ beq t2, zero, 4b
+ nop
+ li t2, 0x80000001
+ sw t2, CGU_MUXCR(t1)
+5:
+ j ra
+ nop
+
+ .end cgu_init
+
+
+ .globl memsetup
+ .ent memsetup
+memsetup:
+
+ /* EBU and CGU Initialization.
*/
- li t1, 0xBE0000F1
- sw t1, EBU_ADDSEL1(t0)
-
-#if CPU_CLOCK_RATE==100000000 /* 100 MHz clock for the MIPS core */
- li t1, 0x684142BD
-#else /* 150 MHz or 133 MHz */
- li t1, 0x684143FD
-#endif
- sw t1, EBU_BUSCON1(t0)
-
-#if CPU_CLOCK_RATE==150000000 /* 150 MHz clock for the MIPS core */
- li t0, CGU_MODUL_BASE
- li t1, 0x80000017
- sw t1, CGU_DIVCR(t0)
- li t1, 0xC00B0001
- sw t1, CGU_PLL1CR(t0)
- lui t2, 0x8000
-b1:
- lw t1, CGU_PLL1SR(t0)
- and t1, t1, t2
- beq t1, zero, b1
- li t1, 0x80000001
- sw t1, CGU_MUXCR(t0)
-#elif CPU_CLOCK_RATE==133000000 /* 133 MHz clock for the MIPS core */
- li t0, CGU_MODUL_BASE
- li t1, 0x80000054
- sw t1, CGU_DIVCR(t0)
- li t1, 0x80000000
- sw t1, CGU_MUXCR(t0)
- li t1, 0x800B0001
- sw t1, CGU_PLL1CR(t0)
-#endif
+ li a0, CPU_CLOCK_RATE
+ move t0, ra
+
+ /* We rely on the fact that neither ebu_init() nor cgu_init()
+ * modify t0 and a0.
+ */
+ bal ebu_init
+ nop
+ bal cgu_init
+ nop
+ move ra, t0
/* SDRAM Initialization.
*/
@@ -154,3 +233,5 @@ b1:
j ra
nop
+ .end memsetup
+
diff --git a/common/cmd_pcmcia.c b/common/cmd_pcmcia.c
index 3d38d5c606..1bd4bc532d 100644
--- a/common/cmd_pcmcia.c
+++ b/common/cmd_pcmcia.c
@@ -227,6 +227,18 @@ int pcmcia_on (void)
break;
}
#endif /* CONFIG_IDE_8xx_PCCARD */
+#ifdef CONFIG_BMS2003
+ case 3: { /* map I/O window for 4xUART data/ctrl */
+ win->br += 0x140000;
+ win->or = ( PCMCIA_BSIZE_256K
+ | PCMCIA_PPS_8
+ | PCMCIA_PRS_IO
+ | slotbit
+ | PCMCIA_PV
+ | CFG_PCMCIA_TIMING );
+ break;
+ }
+#endif /* CONFIG_BMS2003 */
default: /* set to not valid */
win->or = 0;
break;
diff --git a/cpu/mips/incaip_clock.c b/cpu/mips/incaip_clock.c
index 27f0609664..4ae06b72ca 100644
--- a/cpu/mips/incaip_clock.c
+++ b/cpu/mips/incaip_clock.c
@@ -102,3 +102,18 @@ uint incaip_get_fpiclk(void)
break;
}
}
+
+int incaip_set_cpuclk(void)
+{
+ uchar tmp[64];
+ ulong cpuclk;
+
+ if (getenv_r("cpuclk", tmp, sizeof(tmp)) > 0)
+ {
+ cpuclk = simple_strtoul(tmp, NULL, 10) * 1000000;
+ ebu_init(cpuclk);
+ cgu_init(cpuclk);
+ }
+
+ return 0;
+}
diff --git a/cpu/mpc5xxx/speed.c b/cpu/mpc5xxx/speed.c
index cb27779a22..4f4e814e94 100644
--- a/cpu/mpc5xxx/speed.c
+++ b/cpu/mpc5xxx/speed.c
@@ -30,10 +30,10 @@
/* Bus-to-Core Multipliers */
static int bus2core[] = {
- 0, 0, 0, 10, 20, 20, 25, 45,
- 30, 55, 40, 50, 0, 60, 35, 0,
- 30, 25, 65, 10, 70, 20, 75, 45,
- 0, 55, 40, 50, 80, 60, 35, 0
+ 3, 2, 2, 2, 4, 4, 5, 9,
+ 6, 11, 8, 10, 3, 12, 7, 0,
+ 6, 5, 13, 2, 14, 4, 15, 9,
+ 0, 11, 8, 10, 16, 12, 7, 0
};
/* ------------------------------------------------------------------------- */
@@ -62,7 +62,7 @@ int get_clocks (void)
} else {
gd->bus_clk = vco / 4;
}
- gd->cpu_clk = gd->bus_clk * bus2core[val & 0x1f] / 10;
+ gd->cpu_clk = gd->bus_clk * bus2core[val & 0x1f] / 2;
val = *(vu_long *)MPC5XXX_CDM_CFG;
if (val & (1 << 8)) {
diff --git a/include/common.h b/include/common.h
index 39c232a0ff..ece5d64cf3 100644
--- a/include/common.h
+++ b/include/common.h
@@ -362,6 +362,9 @@ ulong get_HCLK (void);
ulong get_PCLK (void);
ulong get_UCLK (void);
#endif
+#if defined CONFIG_INCA_IP
+uint incaip_get_cpuclk (void);
+#endif
ulong get_bus_freq (ulong);
#if defined(CONFIG_MPC85xx)
diff --git a/include/configs/Sandpoint8240.h b/include/configs/Sandpoint8240.h
index 5bf184ea94..1c37f63962 100644
--- a/include/configs/Sandpoint8240.h
+++ b/include/configs/Sandpoint8240.h
@@ -269,7 +269,7 @@
*/
#define CONFIG_SYS_CLK_FREQ 33000000 /* external frequency to pll */
-#define CONFIG_PLL_PCI_TO_MEM_MULTIPLIER 2
+#define CONFIG_PLL_PCI_TO_MEM_MULTIPLIER 1
#define CFG_ROMNAL 7 /*rom/flash next access time */
#define CFG_ROMFAL 11 /*rom/flash access time */
diff --git a/include/configs/incaip.h b/include/configs/incaip.h
index 15d5c2ee28..e6fa193426 100644
--- a/include/configs/incaip.h
+++ b/include/configs/incaip.h
@@ -36,12 +36,7 @@
#define CPU_CLOCK_RATE 133000000 /* 133 MHz clock for the MIPS core */
#endif
-#if CPU_CLOCK_RATE == 100000000
-#define INFINEON_EBU_BOOTCFG 0x20C4 /* CMULT = 4 for 100 MHz */
-#else
-#define INFINEON_EBU_BOOTCFG 0x40C4 /* CMULT = 8 for 150 MHz */
-#endif
-
+#define INFINEON_EBU_BOOTCFG 0x40C4 /* CMULT = 8 */
#define CONFIG_BOOTDELAY 5 /* autoboot after 5 seconds */
@@ -106,7 +101,7 @@
#define CFG_BOOTPARAMS_LEN 128*1024
-#define CFG_HZ (CPU_CLOCK_RATE/2)
+#define CFG_HZ (incaip_get_cpuclk() / 2)
#define CFG_SDRAM_BASE 0x80000000
diff --git a/lib_mips/board.c b/lib_mips/board.c
index 3c8a2d2d24..0727095534 100644
--- a/lib_mips/board.c
+++ b/lib_mips/board.c
@@ -41,6 +41,8 @@
extern int timer_init(void);
+extern int incaip_set_cpuclk(void);
+
extern ulong uboot_end_data;
extern ulong uboot_end;
@@ -163,6 +165,9 @@ typedef int (init_fnc_t) (void);
init_fnc_t *init_sequence[] = {
timer_init,
env_init, /* initialize environment */
+#ifdef CONFIG_INCA_IP
+ incaip_set_cpuclk, /* set cpu clock according to environment variable */
+#endif
init_baudrate, /* initialze baudrate settings */
serial_init, /* serial communications setup */
console_init_f,
--
2.39.5