[PATCH 4/6] PowerPC 440EPx: Sequoia bootwrapper
Valentine Barshak
vbarshak at ru.mvista.com
Tue Jul 31 01:14:45 EST 2007
A bootwrapper code for Sequoia.
Signed-off-by: Valentine Barshak <vbarshak at ru.mvista.com>
---
arch/powerpc/boot/44x.h | 1
arch/powerpc/boot/Makefile | 6
arch/powerpc/boot/cuboot-sequoia.c | 31 ++++
arch/powerpc/boot/sequoia.c | 234 +++++++++++++++++++++++++++++++++++
arch/powerpc/boot/treeboot-sequoia.c | 27 ++++
5 files changed, 297 insertions(+), 2 deletions(-)
diff -ruN linux.orig/arch/powerpc/boot/44x.h linux/arch/powerpc/boot/44x.h
--- linux.orig/arch/powerpc/boot/44x.h 2007-07-27 20:37:10.000000000 +0400
+++ linux/arch/powerpc/boot/44x.h 2007-07-27 20:44:26.000000000 +0400
@@ -15,5 +15,6 @@
void ibm44x_dbcr_reset(void);
void ebony_init(void *mac0, void *mac1);
+void sequoia_init(void *mac0, void *mac1);
#endif /* _PPC_BOOT_44X_H_ */
diff -ruN linux.orig/arch/powerpc/boot/cuboot-sequoia.c linux/arch/powerpc/boot/cuboot-sequoia.c
--- linux.orig/arch/powerpc/boot/cuboot-sequoia.c 1970-01-01 03:00:00.000000000 +0300
+++ linux/arch/powerpc/boot/cuboot-sequoia.c 2007-07-27 20:44:26.000000000 +0400
@@ -0,0 +1,31 @@
+/*
+ * Old U-boot compatibility for Sequoia
+ *
+ * Based on Ebony code by David Gibson <david at gibson.dropbear.id.au>
+ *
+ * Copyright 2007 David Gibson, IBM Corporatio.
+ * Based on cuboot-83xx.c, which is:
+ * Copyright (c) 2007 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ */
+
+#include "ops.h"
+#include "stdio.h"
+#include "44x.h"
+#include "cuboot.h"
+
+#define TARGET_4xx
+#define TARGET_44x
+#include "ppcboot.h"
+
+static bd_t bd;
+
+void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
+ unsigned long r6, unsigned long r7)
+{
+ CUBOOT_INIT();
+ sequoia_init(&bd.bi_enetaddr, &bd.bi_enet1addr);
+}
diff -ruN linux.orig/arch/powerpc/boot/Makefile linux/arch/powerpc/boot/Makefile
--- linux.orig/arch/powerpc/boot/Makefile 2007-07-27 20:37:10.000000000 +0400
+++ linux/arch/powerpc/boot/Makefile 2007-07-27 20:44:26.000000000 +0400
@@ -44,10 +44,11 @@
src-wlib := string.S crt0.S stdio.c main.c flatdevtree.c flatdevtree_misc.c \
ns16550.c serial.c simple_alloc.c div64.S util.S \
gunzip_util.c elf_util.c $(zlib) devtree.c oflib.c ofconsole.c \
- 44x.c ebony.c mv64x60.c mpsc.c mv64x60_i2c.c cuboot.c
+ 44x.c ebony.c mv64x60.c mpsc.c mv64x60_i2c.c cuboot.c \
+ sequoia.c
src-plat := of.c cuboot-83xx.c cuboot-85xx.c holly.c \
cuboot-ebony.c treeboot-ebony.c prpmc2800.c \
- ps3-head.S ps3-hvcall.S ps3.c
+ ps3-head.S ps3-hvcall.S ps3.c treeboot-sequoia.c cuboot-sequoia.c
src-boot := $(src-wlib) $(src-plat) empty.c
src-boot := $(addprefix $(obj)/, $(src-boot))
@@ -142,6 +143,7 @@
image-$(CONFIG_PPC_83xx) += cuImage.83xx
image-$(CONFIG_PPC_85xx) += cuImage.85xx
image-$(CONFIG_EBONY) += treeImage.ebony cuImage.ebony
+image-$(CONFIG_SEQUOIA) += treeImage.sequoia cuImage.sequoia
endif
# For 32-bit powermacs, build the COFF and miboot images
diff -ruN linux.orig/arch/powerpc/boot/sequoia.c linux/arch/powerpc/boot/sequoia.c
--- linux.orig/arch/powerpc/boot/sequoia.c 1970-01-01 03:00:00.000000000 +0300
+++ linux/arch/powerpc/boot/sequoia.c 2007-07-27 20:59:09.000000000 +0400
@@ -0,0 +1,234 @@
+/*
+ * Based on Bamboo code by Josh Boyer <jwboyer at linux.vnet.ibm.com>
+ * Copyright IBM Corporation, 2007
+ *
+ * Based on ebony wrapper:
+ * Copyright 2007 David Gibson, IBM Corporation.
+ *
+ * Clocking code based on code by:
+ * Stefan Roese <sr at denx.de>
+ *
+ * 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; version 2 of the License
+ */
+#include <stdarg.h>
+#include <stddef.h>
+#include "types.h"
+#include "elf.h"
+#include "string.h"
+#include "stdio.h"
+#include "page.h"
+#include "ops.h"
+#include "dcr.h"
+#include "44x.h"
+
+extern char _dtb_start[];
+extern char _dtb_end[];
+
+static u8 *sequoia_mac0, *sequoia_mac1;
+
+#define SPRN_CCR1 0x378
+void ibm440ep_fixup_clocks(unsigned int sysclk, unsigned int ser_clk)
+{
+ u32 cpu, plb, opb, ebc, tb, uart0, m, vco;
+ u32 reg;
+ u32 fwdva, fwdvb, fbdv, lfbdv, opbdv0, perdv0, spcid0, prbdv0, tmp;
+
+ mtdcr(DCRN_CPR0_ADDR, CPR0_PLLD0);
+ reg = mfdcr(DCRN_CPR0_DATA);
+ tmp = (reg & 0x000F0000) >> 16;
+ fwdva = tmp ? tmp : 16;
+ tmp = (reg & 0x00000700) >> 8;
+ fwdvb = tmp ? tmp : 8;
+ tmp = (reg & 0x1F000000) >> 24;
+ fbdv = tmp ? tmp : 32;
+ lfbdv = (reg & 0x0000007F);
+
+ mtdcr(DCRN_CPR0_ADDR, CPR0_OPBD0);
+ reg = mfdcr(DCRN_CPR0_DATA);
+ tmp = (reg & 0x03000000) >> 24;
+ opbdv0 = tmp ? tmp : 4;
+
+ mtdcr(DCRN_CPR0_ADDR, CPR0_PERD0);
+ reg = mfdcr(DCRN_CPR0_DATA);
+ tmp = (reg & 0x07000000) >> 24;
+ perdv0 = tmp ? tmp : 8;
+
+ mtdcr(DCRN_CPR0_ADDR, CPR0_PRIMBD0);
+ reg = mfdcr(DCRN_CPR0_DATA);
+ tmp = (reg & 0x07000000) >> 24;
+ prbdv0 = tmp ? tmp : 8;
+
+ mtdcr(DCRN_CPR0_ADDR, CPR0_SCPID);
+ reg = mfdcr(DCRN_CPR0_DATA);
+ tmp = (reg & 0x03000000) >> 24;
+ spcid0 = tmp ? tmp : 4;
+
+ /* Calculate M */
+ mtdcr(DCRN_CPR0_ADDR, CPR0_PLLC0);
+ reg = mfdcr(DCRN_CPR0_DATA);
+ tmp = (reg & 0x03000000) >> 24;
+ if (tmp == 0) { /* PLL output */
+ tmp = (reg & 0x20000000) >> 29;
+ if (!tmp) /* PLLOUTA */
+ m = fbdv * lfbdv * fwdva;
+ else
+ m = fbdv * lfbdv * fwdvb;
+ }
+ else if (tmp == 1) /* CPU output */
+ m = fbdv * fwdva;
+ else
+ m = perdv0 * opbdv0 * fwdvb;
+
+ vco = (m * sysclk) + (m >> 1);
+ cpu = vco / fwdva;
+ plb = vco / fwdvb / prbdv0;
+ opb = plb / opbdv0;
+ ebc = plb / perdv0;
+
+ /* FIXME */
+ uart0 = ser_clk;
+
+ /* Figure out timebase. Either CPU or default TmrClk */
+ asm volatile (
+ "mfspr %0,%1\n"
+ :
+ "=&r"(reg) : "i"(SPRN_CCR1));
+ if (reg & 0x0080)
+ tb = 25000000; /* TmrClk is 25MHz */
+ else
+ tb = cpu;
+
+ dt_fixup_cpu_clocks(cpu, tb, 0);
+ dt_fixup_clock("/plb", plb);
+ dt_fixup_clock("/plb/opb", opb);
+ dt_fixup_clock("/plb/opb/ebc", ebc);
+ dt_fixup_clock("/plb/opb/serial at ef600300", uart0);
+ dt_fixup_clock("/plb/opb/serial at ef600400", uart0);
+ dt_fixup_clock("/plb/opb/serial at ef600500", uart0);
+ dt_fixup_clock("/plb/opb/serial at ef600600", uart0);
+}
+
+
+/*
+ * 440EPx DDR1/2 memory controller code
+ * TODO: move to generic 44x code
+ */
+
+/* DDR0_02 */
+#define DDR_START 0x1
+#define DDR_START_SHIFT 0
+#define DDR_MAX_CS_REG 0x3
+#define DDR_MAX_CS_REG_SHIFT 24
+#define DDR_MAX_COL_REG 0xf
+#define DDR_MAX_COL_REG_SHIFT 16
+#define DDR_MAX_ROW_REG 0xf
+#define DDR_MAX_ROW_REG_SHIFT 8
+/* DDR0_08 */
+#define DDR_DDR2_MODE 0x1
+#define DDR_DDR2_MODE_SHIFT 0
+/* DDR0_10 */
+#define DDR_CS_MAP 0x3
+#define DDR_CS_MAP_SHIFT 8
+/* DDR0_14 */
+#define DDR_REDUC 0x1
+#define DDR_REDUC_SHIFT 16
+/* DDR0_42 */
+#define DDR_APIN 0x7
+#define DDR_APIN_SHIFT 24
+/* DDR0_43 */
+#define DDR_COL_SZ 0x7
+#define DDR_COL_SZ_SHIFT 8
+#define DDR_BANK8 0x1
+#define DDR_BANK8_SHIFT 0
+
+#define DDR_GET_VAL(val, mask, shift) (((val) >> (shift)) & (mask))
+
+static void ibm440epx_fixup_memsize(void)
+{
+ unsigned long val, max_cs, max_col, max_row;
+ unsigned long cs, col, row, bank, dpath;
+ unsigned long memsize;
+
+ mtdcr(DCRN_SDRAM0_CFGADDR, 2);
+ val = mfdcr(DCRN_SDRAM0_CFGDATA);
+ if (!DDR_GET_VAL(val, DDR_START, DDR_START_SHIFT))
+ fatal("DDR controller is not initialized\n");
+
+ /* get maximum cs col and row values */
+ max_cs = DDR_GET_VAL(val, DDR_MAX_CS_REG, DDR_MAX_CS_REG_SHIFT);
+ max_col = DDR_GET_VAL(val, DDR_MAX_COL_REG, DDR_MAX_COL_REG_SHIFT);
+ max_row = DDR_GET_VAL(val, DDR_MAX_ROW_REG, DDR_MAX_ROW_REG_SHIFT);
+
+ /* get CS value */
+ mtdcr(DCRN_SDRAM0_CFGADDR, 10);
+ val = mfdcr(DCRN_SDRAM0_CFGDATA);
+
+ val = DDR_GET_VAL(val, DDR_CS_MAP, DDR_CS_MAP_SHIFT);
+ cs = 0;
+ while (val) {
+ if (val && 0x1)
+ cs++;
+ val = val >> 1;
+ }
+
+ if (!cs)
+ fatal("No memory installed\n");
+ if (cs > max_cs)
+ fatal("DDR wrong CS configuration\n");
+
+ /* get data path bytes */
+ mtdcr(DCRN_SDRAM0_CFGADDR, 14);
+ val = mfdcr(DCRN_SDRAM0_CFGDATA);
+
+ if (DDR_GET_VAL(val, DDR_REDUC, DDR_REDUC_SHIFT))
+ dpath = 8; /* 64 bits */
+ else
+ dpath = 4; /* 32 bits */
+
+ /* get adress pins (rows) */
+ mtdcr(DCRN_SDRAM0_CFGADDR, 42);
+ val = mfdcr(DCRN_SDRAM0_CFGDATA);
+
+ row = DDR_GET_VAL(val, DDR_APIN, DDR_APIN_SHIFT);
+ if (row > max_row)
+ fatal("DDR wrong APIN configuration\n");
+ row = max_row - row;
+
+ /* get collomn size and banks */
+ mtdcr(DCRN_SDRAM0_CFGADDR, 43);
+ val = mfdcr(DCRN_SDRAM0_CFGDATA);
+
+ col = DDR_GET_VAL(val, DDR_COL_SZ, DDR_COL_SZ_SHIFT);
+ if (col > max_col)
+ fatal("DDR wrong COL configuration\n");
+ col = max_col - col;
+
+ if (DDR_GET_VAL(val, DDR_BANK8, DDR_BANK8_SHIFT))
+ bank = 8; /* 8 banks */
+ else
+ bank = 4; /* 4 banks */
+
+ memsize = cs * (1 << (col+row)) * bank * dpath;
+ dt_fixup_memory(0, memsize);
+}
+
+static void sequoia_fixups(void)
+{
+ unsigned long sysclk = 33333333;
+ ibm440ep_fixup_clocks(sysclk, 11059200);
+ ibm4xx_fixup_ebc_ranges("/plb/opb/ebc");
+ ibm440epx_fixup_memsize();
+ dt_fixup_mac_addresses(sequoia_mac0, sequoia_mac1);
+}
+
+void sequoia_init(void *mac0, void *mac1)
+{
+ platform_ops.fixups = sequoia_fixups;
+ platform_ops.exit = ibm44x_dbcr_reset;
+ sequoia_mac0 = mac0;
+ sequoia_mac1 = mac1;
+ ft_init(_dtb_start, 0, 32);
+ serial_console_init();
+}
diff -ruN linux.orig/arch/powerpc/boot/treeboot-sequoia.c linux/arch/powerpc/boot/treeboot-sequoia.c
--- linux.orig/arch/powerpc/boot/treeboot-sequoia.c 1970-01-01 03:00:00.000000000 +0300
+++ linux/arch/powerpc/boot/treeboot-sequoia.c 2007-07-27 20:44:26.000000000 +0400
@@ -0,0 +1,27 @@
+/*
+ * Based on Bamboo code by Josh Boyer <jwboyer at linux.vnet.ibm.com>
+ * Copyright IBM Corporation, 2007
+ *
+ * Based on ebony wrapper:
+ * Copyright 2007 David Gibson, IBM Corporation.
+ *
+ * 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; version 2 of the License
+ */
+#include "ops.h"
+#include "stdio.h"
+#include "44x.h"
+
+extern char _end[];
+
+BSS_STACK(4096);
+
+void platform_init(void)
+{
+ unsigned long end_of_ram = 0x10000000;
+ unsigned long avail_ram = end_of_ram - (unsigned long)_end;
+
+ simple_alloc_init(_end, avail_ram, 32, 64);
+ sequoia_init(NULL, NULL);
+}
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