ppc4xx: Enable Primordial Stack for 40x and Unify ECC Handling
This patch (Part 1 of 2):
* Rolls up a suite of changes to enable correct primordial stack and
global data handling when the data cache is used for such a purpose
for PPC40x-variants (i.e. CFG_INIT_DCACHE_CS).
* Related to the first, unifies DDR2 SDRAM and ECC initialization by
eliminating redundant ECC initialization implementations and moving
redundant SDRAM initialization out of board code into shared 4xx
code.
* Enables MCSR visibility on the 405EX(r).
* Enables the use of the data cache for initial RAM on
both AMCC's Kilauea and Makalu and removes a redundant
CFG_POST_MEMORY flag from each board's CONFIG_POST value.
- Removed, per Stefan Roese's request, defunct memory.c file for
Makalu and rolled sdram_init from it into makalu.c.
With respect to the 4xx DDR initialization and ECC unification, there
is certainly more work that can and should be done (file renaming,
etc.). However, that can be handled at a later date on a second or
third pass. As it stands, this patch moves things forward in an
incremental yet positive way for those platforms that utilize this
code and the features associated with it.
Signed-off-by: Grant Erickson <gerickson@nuovations.com>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/cpu/ppc4xx/44x_spd_ddr.c b/cpu/ppc4xx/44x_spd_ddr.c
index b9cf5cb..b7eeaf2 100644
--- a/cpu/ppc4xx/44x_spd_ddr.c
+++ b/cpu/ppc4xx/44x_spd_ddr.c
@@ -53,6 +53,8 @@
#include <ppc4xx.h>
#include <asm/mmu.h>
+#include "ecc.h"
+
#if defined(CONFIG_SPD_EEPROM) && \
(defined(CONFIG_440GP) || defined(CONFIG_440GX) || \
defined(CONFIG_440EP) || defined(CONFIG_440GR))
@@ -296,10 +298,6 @@
unsigned long num_dimm_banks);
static void program_tr1(void);
-#ifdef CONFIG_DDR_ECC
-static void program_ecc(unsigned long num_bytes);
-#endif
-
static unsigned long program_bxcr(unsigned long *dimm_populated,
unsigned char *iic0_dimm_addr,
unsigned long num_dimm_banks);
@@ -418,7 +416,7 @@
/*
* If ecc is enabled, initialize the parity bits.
*/
- program_ecc(total_size);
+ ecc_init(CFG_SDRAM_BASE, total_size);
#endif
return total_size;
@@ -1402,45 +1400,4 @@
return(bank_base_addr);
}
-
-#ifdef CONFIG_DDR_ECC
-static void program_ecc(unsigned long num_bytes)
-{
- unsigned long bank_base_addr;
- unsigned long current_address;
- unsigned long end_address;
- unsigned long address_increment;
- unsigned long cfg0;
-
- /*
- * get Memory Controller Options 0 data
- */
- mfsdram(mem_cfg0, cfg0);
-
- /*
- * reset the bank_base address
- */
- bank_base_addr = CFG_SDRAM_BASE;
-
- if ((cfg0 & SDRAM_CFG0_MCHK_MASK) != SDRAM_CFG0_MCHK_NON) {
- mtsdram(mem_cfg0, (cfg0 & ~SDRAM_CFG0_MCHK_MASK) | SDRAM_CFG0_MCHK_GEN);
-
- if ((cfg0 & SDRAM_CFG0_DMWD_MASK) == SDRAM_CFG0_DMWD_32)
- address_increment = 4;
- else
- address_increment = 8;
-
- current_address = (unsigned long)(bank_base_addr);
- end_address = (unsigned long)(bank_base_addr) + num_bytes;
-
- while (current_address < end_address) {
- *((unsigned long*)current_address) = 0x00000000;
- current_address += address_increment;
- }
-
- mtsdram(mem_cfg0, (cfg0 & ~SDRAM_CFG0_MCHK_MASK) |
- SDRAM_CFG0_MCHK_CHK);
- }
-}
-#endif /* CONFIG_DDR_ECC */
#endif /* CONFIG_SPD_EEPROM */
diff --git a/cpu/ppc4xx/44x_spd_ddr2.c b/cpu/ppc4xx/44x_spd_ddr2.c
index ec76b71..aa4a530 100644
--- a/cpu/ppc4xx/44x_spd_ddr2.c
+++ b/cpu/ppc4xx/44x_spd_ddr2.c
@@ -3,9 +3,12 @@
* This SPD SDRAM detection code supports AMCC PPC44x cpu's with a
* DDR2 controller (non Denali Core). Those currently are:
*
- * 405: 405EX
+ * 405: 405EX(r)
* 440/460: 440SP/440SPe/460EX/460GT
*
+ * Copyright (c) 2008 Nuovation System Designs, LLC
+ * Grant Erickson <gerickson@nuovations.com>
+
* (C) Copyright 2007-2008
* Stefan Roese, DENX Software Engineering, sr@denx.de.
*
@@ -45,6 +48,8 @@
#include <asm/mmu.h>
#include <asm/cache.h>
+#include "ecc.h"
+
#if defined(CONFIG_SPD_EEPROM) && \
(defined(CONFIG_440SP) || defined(CONFIG_440SPE) || \
defined(CONFIG_460EX) || defined(CONFIG_460GT))
@@ -3064,9 +3069,116 @@
dcr_data = mfdcr(SDRAM_R3BAS);
printf(" MQ3_B0BAS = 0x%08X\n", dcr_data);
}
-#else
+#else /* !defined(DEBUG) */
static void ppc440sp_sdram_register_dump(void)
{
}
-#endif
-#endif /* CONFIG_SPD_EEPROM */
+#endif /* defined(DEBUG) */
+#elif defined(CONFIG_405EX)
+/*-----------------------------------------------------------------------------
+ * Function: initdram
+ * Description: Configures the PPC405EX(r) DDR1/DDR2 SDRAM memory
+ * banks. The configuration is performed using static, compile-
+ * time parameters.
+ *---------------------------------------------------------------------------*/
+long initdram(int board_type)
+{
+ unsigned long val;
+
+ /* Set Memory Bank Configuration Registers */
+
+ mtsdram(SDRAM_MB0CF, CFG_SDRAM0_MB0CF);
+ mtsdram(SDRAM_MB1CF, CFG_SDRAM0_MB1CF);
+ mtsdram(SDRAM_MB2CF, CFG_SDRAM0_MB2CF);
+ mtsdram(SDRAM_MB3CF, CFG_SDRAM0_MB3CF);
+
+ /* Set Memory Clock Timing Register */
+
+ mtsdram(SDRAM_CLKTR, CFG_SDRAM0_CLKTR);
+
+ /* Set Refresh Time Register */
+
+ mtsdram(SDRAM_RTR, CFG_SDRAM0_RTR);
+
+ /* Set SDRAM Timing Registers */
+
+ mtsdram(SDRAM_SDTR1, CFG_SDRAM0_SDTR1);
+ mtsdram(SDRAM_SDTR2, CFG_SDRAM0_SDTR2);
+ mtsdram(SDRAM_SDTR3, CFG_SDRAM0_SDTR3);
+
+ /* Set Mode and Extended Mode Registers */
+
+ mtsdram(SDRAM_MMODE, CFG_SDRAM0_MMODE);
+ mtsdram(SDRAM_MEMODE, CFG_SDRAM0_MEMODE);
+
+ /* Set Memory Controller Options 1 Register */
+
+ mtsdram(SDRAM_MCOPT1, CFG_SDRAM0_MCOPT1);
+
+ /* Set Manual Initialization Control Registers */
+
+ mtsdram(SDRAM_INITPLR0, CFG_SDRAM0_INITPLR0);
+ mtsdram(SDRAM_INITPLR1, CFG_SDRAM0_INITPLR1);
+ mtsdram(SDRAM_INITPLR2, CFG_SDRAM0_INITPLR2);
+ mtsdram(SDRAM_INITPLR3, CFG_SDRAM0_INITPLR3);
+ mtsdram(SDRAM_INITPLR4, CFG_SDRAM0_INITPLR4);
+ mtsdram(SDRAM_INITPLR5, CFG_SDRAM0_INITPLR5);
+ mtsdram(SDRAM_INITPLR6, CFG_SDRAM0_INITPLR6);
+ mtsdram(SDRAM_INITPLR7, CFG_SDRAM0_INITPLR7);
+ mtsdram(SDRAM_INITPLR8, CFG_SDRAM0_INITPLR8);
+ mtsdram(SDRAM_INITPLR9, CFG_SDRAM0_INITPLR9);
+ mtsdram(SDRAM_INITPLR10, CFG_SDRAM0_INITPLR10);
+ mtsdram(SDRAM_INITPLR11, CFG_SDRAM0_INITPLR11);
+ mtsdram(SDRAM_INITPLR12, CFG_SDRAM0_INITPLR12);
+ mtsdram(SDRAM_INITPLR13, CFG_SDRAM0_INITPLR13);
+ mtsdram(SDRAM_INITPLR14, CFG_SDRAM0_INITPLR14);
+ mtsdram(SDRAM_INITPLR15, CFG_SDRAM0_INITPLR15);
+
+ /* Set On-Die Termination Registers */
+
+ mtsdram(SDRAM_CODT, CFG_SDRAM0_CODT);
+ mtsdram(SDRAM_MODT0, CFG_SDRAM0_MODT0);
+ mtsdram(SDRAM_MODT1, CFG_SDRAM0_MODT1);
+
+ /* Set Write Timing Register */
+
+ mtsdram(SDRAM_WRDTR, CFG_SDRAM0_WRDTR);
+
+ /*
+ * Start Initialization by SDRAM0_MCOPT2[SREN] = 0 and
+ * SDRAM0_MCOPT2[IPTR] = 1
+ */
+
+ mtsdram(SDRAM_MCOPT2, (SDRAM_MCOPT2_SREN_EXIT |
+ SDRAM_MCOPT2_IPTR_EXECUTE));
+
+ /*
+ * Poll SDRAM0_MCSTAT[MIC] for assertion to indicate the
+ * completion of initialization.
+ */
+
+ do {
+ mfsdram(SDRAM_MCSTAT, val);
+ } while ((val & SDRAM_MCSTAT_MIC_MASK) != SDRAM_MCSTAT_MIC_COMP);
+
+ /* Set Delay Control Registers */
+
+ mtsdram(SDRAM_DLCR, CFG_SDRAM0_DLCR);
+ mtsdram(SDRAM_RDCC, CFG_SDRAM0_RDCC);
+ mtsdram(SDRAM_RQDC, CFG_SDRAM0_RQDC);
+ mtsdram(SDRAM_RFDC, CFG_SDRAM0_RFDC);
+
+ /*
+ * Enable Controller by SDRAM0_MCOPT2[DCEN] = 1:
+ */
+
+ mfsdram(SDRAM_MCOPT2, val);
+ mtsdram(SDRAM_MCOPT2, val | SDRAM_MCOPT2_DCEN_ENABLE);
+
+#if defined(CONFIG_DDR_ECC)
+ ecc_init(CFG_SDRAM_BASE, CFG_MBYTES_SDRAM << 20);
+#endif /* defined(CONFIG_DDR_ECC) */
+
+ return (CFG_MBYTES_SDRAM << 20);
+}
+#endif /* defined(CONFIG_SPD_EEPROM) && defined(CONFIG_440SP) || ... */
diff --git a/cpu/ppc4xx/Makefile b/cpu/ppc4xx/Makefile
index 178c5c6..800bb41 100644
--- a/cpu/ppc4xx/Makefile
+++ b/cpu/ppc4xx/Makefile
@@ -45,6 +45,7 @@
COBJS += cpu_init.o
COBJS += denali_data_eye.o
COBJS += denali_spd_ddr2.o
+COBJS += ecc.o
COBJS += fdt.o
COBJS += gpio.o
COBJS += i2c.o
diff --git a/cpu/ppc4xx/cpu_init.c b/cpu/ppc4xx/cpu_init.c
index 42eabfe..1e9423a 100644
--- a/cpu/ppc4xx/cpu_init.c
+++ b/cpu/ppc4xx/cpu_init.c
@@ -32,73 +32,6 @@
DECLARE_GLOBAL_DATA_PTR;
#endif
-#ifdef CFG_INIT_DCACHE_CS
-# if (CFG_INIT_DCACHE_CS == 0)
-# define PBxAP pb0ap
-# define PBxCR pb0cr
-# if (defined(CFG_EBC_PB0AP) && defined(CFG_EBC_PB0CR))
-# define PBxAP_VAL CFG_EBC_PB0AP
-# define PBxCR_VAL CFG_EBC_PB0CR
-# endif
-# endif
-# if (CFG_INIT_DCACHE_CS == 1)
-# define PBxAP pb1ap
-# define PBxCR pb1cr
-# if (defined(CFG_EBC_PB1AP) && defined(CFG_EBC_PB1CR))
-# define PBxAP_VAL CFG_EBC_PB1AP
-# define PBxCR_VAL CFG_EBC_PB1CR
-# endif
-# endif
-# if (CFG_INIT_DCACHE_CS == 2)
-# define PBxAP pb2ap
-# define PBxCR pb2cr
-# if (defined(CFG_EBC_PB2AP) && defined(CFG_EBC_PB2CR))
-# define PBxAP_VAL CFG_EBC_PB2AP
-# define PBxCR_VAL CFG_EBC_PB2CR
-# endif
-# endif
-# if (CFG_INIT_DCACHE_CS == 3)
-# define PBxAP pb3ap
-# define PBxCR pb3cr
-# if (defined(CFG_EBC_PB3AP) && defined(CFG_EBC_PB3CR))
-# define PBxAP_VAL CFG_EBC_PB3AP
-# define PBxCR_VAL CFG_EBC_PB3CR
-# endif
-# endif
-# if (CFG_INIT_DCACHE_CS == 4)
-# define PBxAP pb4ap
-# define PBxCR pb4cr
-# if (defined(CFG_EBC_PB4AP) && defined(CFG_EBC_PB4CR))
-# define PBxAP_VAL CFG_EBC_PB4AP
-# define PBxCR_VAL CFG_EBC_PB4CR
-# endif
-# endif
-# if (CFG_INIT_DCACHE_CS == 5)
-# define PBxAP pb5ap
-# define PBxCR pb5cr
-# if (defined(CFG_EBC_PB5AP) && defined(CFG_EBC_PB5CR))
-# define PBxAP_VAL CFG_EBC_PB5AP
-# define PBxCR_VAL CFG_EBC_PB5CR
-# endif
-# endif
-# if (CFG_INIT_DCACHE_CS == 6)
-# define PBxAP pb6ap
-# define PBxCR pb6cr
-# if (defined(CFG_EBC_PB6AP) && defined(CFG_EBC_PB6CR))
-# define PBxAP_VAL CFG_EBC_PB6AP
-# define PBxCR_VAL CFG_EBC_PB6CR
-# endif
-# endif
-# if (CFG_INIT_DCACHE_CS == 7)
-# define PBxAP pb7ap
-# define PBxCR pb7cr
-# if (defined(CFG_EBC_PB7AP) && defined(CFG_EBC_PB7CR))
-# define PBxAP_VAL CFG_EBC_PB7AP
-# define PBxCR_VAL CFG_EBC_PB7CR
-# endif
-# endif
-#endif /* CFG_INIT_DCACHE_CS */
-
#ifndef CFG_PLL_RECONFIG
#define CFG_PLL_RECONFIG 0
#endif
@@ -353,24 +286,6 @@
uint pvr = get_pvr();
#endif
-#ifdef CFG_INIT_DCACHE_CS
- /*
- * Flush and invalidate dcache, then disable CS for temporary stack.
- * Afterwards, this CS can be used for other purposes
- */
- dcache_disable(); /* flush and invalidate dcache */
- mtebc(PBxAP, 0);
- mtebc(PBxCR, 0); /* disable CS for temporary stack */
-
-#if (defined(PBxAP_VAL) && defined(PBxCR_VAL))
- /*
- * Write new value into CS register
- */
- mtebc(PBxAP, PBxAP_VAL);
- mtebc(PBxCR, PBxCR_VAL);
-#endif
-#endif /* CFG_INIT_DCACHE_CS */
-
/*
* Write Ethernetaddress into on-chip register
*/
diff --git a/cpu/ppc4xx/ecc.c b/cpu/ppc4xx/ecc.c
new file mode 100644
index 0000000..95b941d
--- /dev/null
+++ b/cpu/ppc4xx/ecc.c
@@ -0,0 +1,121 @@
+/*
+ * Copyright (c) 2008 Nuovation System Designs, LLC
+ * Grant Erickson <gerickson@nuovations.com>
+ *
+ * (C) Copyright 2005-2007
+ * Stefan Roese, DENX Software Engineering, sr@denx.de.
+ *
+ * (C) Copyright 2002
+ * Jun Gu, Artesyn Technology, jung@artesyncp.com
+ *
+ * (C) Copyright 2001
+ * Bill Hunter, Wave 7 Optics, williamhunter@attbi.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 abe 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
+ *
+ * Description:
+ * This file implements generic DRAM ECC initialization for
+ * PowerPC processors using a SDRAM DDR/DDR2 controller,
+ * including the 405EX(r), 440GP/GX/EP/GR, 440SP(E), and
+ * 460EX/GT.
+ */
+
+#include <common.h>
+#include <ppc4xx.h>
+#include <ppc_asm.tmpl>
+#include <ppc_defs.h>
+#include <asm/processor.h>
+#include <asm/io.h>
+
+#include "ecc.h"
+
+#if !defined(CONFIG_440EPX) && !defined(CONFIG_440GRX)
+#if defined(CONFIG_DDR_ECC) || defined(CONFIG_SDRAM_ECC)
+/*
+ * void ecc_init()
+ *
+ * Description:
+ * This routine initializes a range of DRAM ECC memory with known
+ * data and enables ECC checking.
+ *
+ * TO DO:
+ * - Improve performance by utilizing cache.
+ * - Further generalize to make usable by other 4xx variants (e.g.
+ * 440EPx, et al).
+ *
+ * Input(s):
+ * start - A pointer to the start of memory covered by ECC requiring
+ * initialization.
+ * size - The size, in bytes, of the memory covered by ECC requiring
+ * initialization.
+ *
+ * Output(s):
+ * start - A pointer to the start of memory covered by ECC with
+ * CFG_ECC_PATTERN written to all locations and ECC data
+ * primed.
+ *
+ * Returns:
+ * N/A
+ */
+void ecc_init(unsigned long * const start, unsigned long size)
+{
+ const unsigned long pattern = CFG_ECC_PATTERN;
+ unsigned * const end = (unsigned long * const)((long)start + size);
+ unsigned long * current = start;
+ unsigned long mcopt1;
+ long increment;
+
+ if (start >= end)
+ return;
+
+ mfsdram(SDRAM_MCOPT1, mcopt1);
+
+ /* Enable ECC generation without checking or reporting */
+
+ mtsdram(SDRAM_MCOPT1, ((mcopt1 & ~SDRAM_MCOPT1_MCHK_MASK) |
+ SDRAM_MCOPT1_MCHK_GEN));
+
+ increment = sizeof(u32);
+
+#if defined(CONFIG_440)
+ /*
+ * Look at the geometry of SDRAM (data width) to determine whether we
+ * can skip words when writing.
+ */
+
+ if ((mcopt1 & SDRAM_MCOPT1_DMWD_MASK) != SDRAM_MCOPT1_DMWD_32)
+ increment = sizeof(u64);
+#endif /* defined(CONFIG_440) */
+
+ while (current < end) {
+ *current = pattern;
+ current = (unsigned long *)((long)current + increment);
+ }
+
+ /* Wait until the writes are finished. */
+
+ sync();
+
+ /* Enable ECC generation with checking and no reporting */
+
+ mtsdram(SDRAM_MCOPT1, ((mcopt1 & ~SDRAM_MCOPT1_MCHK_MASK) |
+ SDRAM_MCOPT1_MCHK_CHK));
+}
+#endif /* defined(CONFIG_DDR_ECC) || defined(CONFIG_SDRAM_ECC) */
+#endif /* !defined(CONFIG_440EPX) && !defined(CONFIG_440GRX) */
diff --git a/cpu/ppc4xx/ecc.h b/cpu/ppc4xx/ecc.h
new file mode 100644
index 0000000..da1c4fd
--- /dev/null
+++ b/cpu/ppc4xx/ecc.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2008 Nuovation System Designs, LLC
+ * Grant Erickson <gerickson@nuovations.com>
+ *
+ * Copyright (c) 2007 DENX Software Engineering, GmbH
+ * Stefan Roese <sr@denx.de>
+ *
+ * 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 abe 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
+ *
+ * Description:
+ * This file implements ECC initialization for PowerPC processors
+ * using the SDRAM DDR2 controller, including the 405EX(r),
+ * 440SP(E), 460EX and 460GT.
+ *
+ */
+
+#ifndef _ECC_H_
+#define _ECC_H_
+
+#if !defined(CFG_ECC_PATTERN)
+#define CFG_ECC_PATTERN 0x00000000
+#endif /* !defined(CFG_ECC_PATTERN) */
+
+extern void ecc_init(unsigned long * const start, unsigned long size);
+
+#endif /* _ECC_H_ */
diff --git a/cpu/ppc4xx/sdram.c b/cpu/ppc4xx/sdram.c
index 2724d91..901d650 100644
--- a/cpu/ppc4xx/sdram.c
+++ b/cpu/ppc4xx/sdram.c
@@ -31,6 +31,7 @@
#include <ppc4xx.h>
#include <asm/processor.h>
#include "sdram.h"
+#include "ecc.h"
#ifdef CONFIG_SDRAM_BANK0
@@ -332,49 +333,6 @@
*tr1_value = (first_good + last_bad) / 2;
}
-#ifdef CONFIG_SDRAM_ECC
-static void ecc_init(ulong start, ulong size)
-{
- ulong current_addr; /* current byte address */
- ulong end_addr; /* end of memory region */
- ulong addr_inc; /* address skip between writes */
- ulong cfg0_reg; /* for restoring ECC state */
-
- /*
- * TODO: Enable dcache before running this test (speedup)
- */
-
- mfsdram(mem_cfg0, cfg0_reg);
- mtsdram(mem_cfg0, (cfg0_reg & ~SDRAM_CFG0_MEMCHK) | SDRAM_CFG0_MEMCHK_GEN);
-
- /*
- * look at geometry of SDRAM (data width) to determine whether we
- * can skip words when writing
- */
- if ((cfg0_reg & SDRAM_CFG0_DRAMWDTH) == SDRAM_CFG0_DRAMWDTH_32)
- addr_inc = 4;
- else
- addr_inc = 8;
-
- current_addr = start;
- end_addr = start + size;
-
- while (current_addr < end_addr) {
- *((ulong *)current_addr) = 0x00000000;
- current_addr += addr_inc;
- }
-
- /*
- * TODO: Flush dcache and disable it again
- */
-
- /*
- * Enable ecc checking and parity errors
- */
- mtsdram(mem_cfg0, (cfg0_reg & ~SDRAM_CFG0_MEMCHK) | SDRAM_CFG0_MEMCHK_CHK);
-}
-#endif
-
/*
* Autodetect onboard DDR SDRAM on 440 platforms
*
diff --git a/cpu/ppc4xx/start.S b/cpu/ppc4xx/start.S
index 0008170..a5d9ec9 100644
--- a/cpu/ppc4xx/start.S
+++ b/cpu/ppc4xx/start.S
@@ -3,6 +3,8 @@
* Copyright (C) 1999 Magnus Damm <kieraypc01.p.y.kie.era.ericsson.se>
* Copyright (C) 2000,2001,2002 Wolfgang Denk <wd@denx.de>
* Copyright (C) 2007 Stefan Roese <sr@denx.de>, DENX Software Engineering
+ * Copyright (c) 2008 Nuovation System Designs, LLC
+ * Grant Erickson <gerickson@nuovations.com>
*
* See file CREDITS for list of people who contributed to this
* project.
@@ -79,34 +81,100 @@
# if (CFG_INIT_DCACHE_CS == 0)
# define PBxAP pb0ap
# define PBxCR pb0cr
+# if (defined(CFG_EBC_PB0AP) && defined(CFG_EBC_PB0CR))
+# define PBxAP_VAL CFG_EBC_PB0AP
+# define PBxCR_VAL CFG_EBC_PB0CR
+# endif
# endif
# if (CFG_INIT_DCACHE_CS == 1)
# define PBxAP pb1ap
# define PBxCR pb1cr
+# if (defined(CFG_EBC_PB1AP) && defined(CFG_EBC_PB1CR))
+# define PBxAP_VAL CFG_EBC_PB1AP
+# define PBxCR_VAL CFG_EBC_PB1CR
+# endif
# endif
# if (CFG_INIT_DCACHE_CS == 2)
# define PBxAP pb2ap
# define PBxCR pb2cr
+# if (defined(CFG_EBC_PB2AP) && defined(CFG_EBC_PB2CR))
+# define PBxAP_VAL CFG_EBC_PB2AP
+# define PBxCR_VAL CFG_EBC_PB2CR
+# endif
# endif
# if (CFG_INIT_DCACHE_CS == 3)
# define PBxAP pb3ap
# define PBxCR pb3cr
+# if (defined(CFG_EBC_PB3AP) && defined(CFG_EBC_PB3CR))
+# define PBxAP_VAL CFG_EBC_PB3AP
+# define PBxCR_VAL CFG_EBC_PB3CR
+# endif
# endif
# if (CFG_INIT_DCACHE_CS == 4)
# define PBxAP pb4ap
# define PBxCR pb4cr
+# if (defined(CFG_EBC_PB4AP) && defined(CFG_EBC_PB4CR))
+# define PBxAP_VAL CFG_EBC_PB4AP
+# define PBxCR_VAL CFG_EBC_PB4CR
+# endif
# endif
# if (CFG_INIT_DCACHE_CS == 5)
# define PBxAP pb5ap
# define PBxCR pb5cr
+# if (defined(CFG_EBC_PB5AP) && defined(CFG_EBC_PB5CR))
+# define PBxAP_VAL CFG_EBC_PB5AP
+# define PBxCR_VAL CFG_EBC_PB5CR
+# endif
# endif
# if (CFG_INIT_DCACHE_CS == 6)
# define PBxAP pb6ap
# define PBxCR pb6cr
+# if (defined(CFG_EBC_PB6AP) && defined(CFG_EBC_PB6CR))
+# define PBxAP_VAL CFG_EBC_PB6AP
+# define PBxCR_VAL CFG_EBC_PB6CR
+# endif
# endif
# if (CFG_INIT_DCACHE_CS == 7)
# define PBxAP pb7ap
# define PBxCR pb7cr
+# if (defined(CFG_EBC_PB7AP) && defined(CFG_EBC_PB7CR))
+# define PBxAP_VAL CFG_EBC_PB7AP
+# define PBxCR_VAL CFG_EBC_PB7CR
+# endif
+# endif
+# ifndef PBxAP_VAL
+# define PBxAP_VAL 0
+# endif
+# ifndef PBxCR_VAL
+# define PBxCR_VAL 0
+# endif
+/*
+ * Memory Bank x (nothingness) initialization CFG_INIT_RAM_ADDR + 64 MiB
+ * used as temporary stack pointer for the primordial stack
+ */
+# ifndef CFG_INIT_DCACHE_PBxAR
+# define CFG_INIT_DCACHE_PBxAR (EBC_BXAP_BME_DISABLED | \
+ EBC_BXAP_TWT_ENCODE(7) | \
+ EBC_BXAP_BCE_DISABLE | \
+ EBC_BXAP_BCT_2TRANS | \
+ EBC_BXAP_CSN_ENCODE(0) | \
+ EBC_BXAP_OEN_ENCODE(0) | \
+ EBC_BXAP_WBN_ENCODE(0) | \
+ EBC_BXAP_WBF_ENCODE(0) | \
+ EBC_BXAP_TH_ENCODE(2) | \
+ EBC_BXAP_RE_DISABLED | \
+ EBC_BXAP_SOR_NONDELAYED | \
+ EBC_BXAP_BEM_WRITEONLY | \
+ EBC_BXAP_PEN_DISABLED)
+# endif /* CFG_INIT_DCACHE_PBxAR */
+# ifndef CFG_INIT_DCACHE_PBxCR
+# define CFG_INIT_DCACHE_PBxCR (EBC_BXCR_BAS_ENCODE(CFG_INIT_RAM_ADDR) | \
+ EBC_BXCR_BS_64MB | \
+ EBC_BXCR_BU_RW | \
+ EBC_BXCR_BW_16BIT)
+# endif /* CFG_INIT_DCACHE_PBxCR */
+# ifndef CFG_INIT_RAM_PATTERN
+# define CFG_INIT_RAM_PATTERN 0xDEADDEAD
# endif
#endif /* CFG_INIT_DCACHE_CS */
@@ -114,6 +182,23 @@
#error Only 4k of init-ram is supported - please adjust CFG_INIT_RAM_END!
#endif
+/*
+ * Unless otherwise overriden, enable two 128MB cachable instruction regions
+ * at CFG_SDRAM_BASE and another 128MB cacheable instruction region covering
+ * NOR flash at CFG_FLASH_BASE. Disable all cacheable data regions.
+ */
+#if !defined(CFG_ICACHE_SACR_VALUE)
+# define CFG_ICACHE_SACR_VALUE \
+ (PPC_128MB_SACR_VALUE(CFG_SDRAM_BASE + ( 0 << 20)) | \
+ PPC_128MB_SACR_VALUE(CFG_SDRAM_BASE + (128 << 20)) | \
+ PPC_128MB_SACR_VALUE(CFG_FLASH_BASE))
+#endif /* !defined(CFG_ICACHE_SACR_VALUE) */
+
+#if !defined(CFG_DCACHE_SACR_VALUE)
+# define CFG_DCACHE_SACR_VALUE \
+ (0x00000000)
+#endif /* !defined(CFG_DCACHE_SACR_VALUE) */
+
#define function_prolog(func_name) .text; \
.align 2; \
.globl func_name; \
@@ -840,16 +925,16 @@
/* make sure above stores all comlete before going on */
sync
- /*----------------------------------------------------------------------- */
- /* Enable two 128MB cachable regions. */
- /*----------------------------------------------------------------------- */
- addis r1,r0,0xc000
- addi r1,r1,0x0001
- mticcr r1 /* instruction cache */
+ /* Set-up icache cacheability. */
+ lis r1, CFG_ICACHE_SACR_VALUE@h
+ ori r1, r1, CFG_ICACHE_SACR_VALUE@l
+ mticcr r1
+ isync
- addis r1,r0,0x0000
- addi r1,r1,0x0000
- mtdccr r1 /* data cache */
+ /* Set-up dcache cacheability. */
+ lis r1, CFG_DCACHE_SACR_VALUE@h
+ ori r1, r1, CFG_DCACHE_SACR_VALUE@l
+ mtdccr r1
addis r1,r0,CFG_INIT_RAM_ADDR@h
ori r1,r1,CFG_INIT_SP_OFFSET /* set up the stack to SDRAM */
@@ -892,27 +977,20 @@
/* dbsr is cleared by setting bits to 1) */
mtdbsr r4 /* clear/reset the dbsr */
- /*----------------------------------------------------------------------- */
- /* Invalidate I and D caches. Enable I cache for defined memory regions */
- /* to speed things up. Leave the D cache disabled for now. It will be */
- /* enabled/left disabled later based on user selected menu options. */
- /* Be aware that the I cache may be disabled later based on the menu */
- /* options as well. See miscLib/main.c. */
- /*----------------------------------------------------------------------- */
+ /* Invalidate the i- and d-caches. */
bl invalidate_icache
bl invalidate_dcache
- /*----------------------------------------------------------------------- */
- /* Enable two 128MB cachable regions. */
- /*----------------------------------------------------------------------- */
- lis r4,0xc000
- ori r4,r4,0x0001
- mticcr r4 /* instruction cache */
+ /* Set-up icache cacheability. */
+ lis r4, CFG_ICACHE_SACR_VALUE@h
+ ori r4, r4, CFG_ICACHE_SACR_VALUE@l
+ mticcr r4
isync
- lis r4,0x0000
- ori r4,r4,0x0000
- mtdccr r4 /* data cache */
+ /* Set-up dcache cacheability. */
+ lis r4, CFG_DCACHE_SACR_VALUE@h
+ ori r4, r4, CFG_DCACHE_SACR_VALUE@l
+ mtdccr r4
#if !(defined(CFG_EBC_PB0AP) && defined(CFG_EBC_PB0CR)) || defined(CONFIG_405EX)
/*----------------------------------------------------------------------- */
@@ -922,9 +1000,9 @@
#endif
#if !(defined(CFG_INIT_DCACHE_CS) || defined(CFG_TEMP_STACK_OCM))
/*
- * Boards like the Kilauea (405EX) don't have OCM and can't use
- * DCache for init-ram. So setup stack here directly after the
- * SDRAM is initialized.
+ * For boards that don't have OCM and can't use the data cache
+ * for their primordial stack, setup stack here directly after the
+ * SDRAM is initialized in ext_bus_cntlr_init.
*/
lis r1, CFG_INIT_RAM_ADDR@h
ori r1,r1,CFG_INIT_SP_OFFSET /* set up the stack in SDRAM */
@@ -1043,47 +1121,86 @@
/* Setup temporary stack in DCACHE or OCM if needed for SDRAM SPD. */
/*----------------------------------------------------------------------- */
#ifdef CFG_INIT_DCACHE_CS
- /*----------------------------------------------------------------------- */
- /* Memory Bank x (nothingness) initialization 1GB+64MEG */
- /* used as temporary stack pointer for stage0 */
- /*----------------------------------------------------------------------- */
- li r4,PBxAP
- mtdcr ebccfga,r4
- lis r4,0x0380
- ori r4,r4,0x0480
- mtdcr ebccfgd,r4
+ li r4, PBxAP
+ mtdcr ebccfga, r4
+ lis r4, CFG_INIT_DCACHE_PBxAR@h
+ ori r4, r4, CFG_INIT_DCACHE_PBxAR@l
+ mtdcr ebccfgd, r4
- addi r4,0,PBxCR
- mtdcr ebccfga,r4
- lis r4,0x400D
- ori r4,r4,0xa000
- mtdcr ebccfgd,r4
+ addi r4, 0, PBxCR
+ mtdcr ebccfga, r4
+ lis r4, CFG_INIT_DCACHE_PBxCR@h
+ ori r4, r4, CFG_INIT_DCACHE_PBxCR@l
+ mtdcr ebccfgd, r4
- /* turn on data cache for this region */
- lis r4,0x0080
+ /*
+ * Enable the data cache for the 128MB storage access control region
+ * at CFG_INIT_RAM_ADDR.
+ */
+ mfdccr r4
+ oris r4, r4, PPC_128MB_SACR_VALUE(CFG_INIT_RAM_ADDR)@h
+ ori r4, r4, PPC_128MB_SACR_VALUE(CFG_INIT_RAM_ADDR)@l
mtdccr r4
- /* set stack pointer and clear stack to known value */
+ /*
+ * Preallocate data cache lines to be used to avoid a subsequent
+ * cache miss and an ensuing machine check exception when exceptions
+ * are enabled.
+ */
+ li r0, 0
- lis r1,CFG_INIT_RAM_ADDR@h
- ori r1,r1,CFG_INIT_SP_OFFSET@l
+ lis r3, CFG_INIT_RAM_ADDR@h
+ ori r3, r3, CFG_INIT_RAM_ADDR@l
- li r4,2048 /* we store 2048 words to stack */
+ lis r4, CFG_INIT_RAM_END@h
+ ori r4, r4, CFG_INIT_RAM_END@l
+
+ /*
+ * Convert the size, in bytes, to the number of cache lines/blocks
+ * to preallocate.
+ */
+ clrlwi. r5, r4, (32 - L1_CACHE_SHIFT)
+ srwi r5, r4, L1_CACHE_SHIFT
+ beq ..load_counter
+ addi r5, r5, 0x0001
+..load_counter:
+ mtctr r5
+
+ /* Preallocate the computed number of cache blocks. */
+..alloc_dcache_block:
+ dcba r0, r3
+ addi r3, r3, L1_CACHE_BYTES
+ bdnz ..alloc_dcache_block
+ sync
+
+ /*
+ * Load the initial stack pointer and data area and convert the size,
+ * in bytes, to the number of words to initialize to a known value.
+ */
+ lis r1, CFG_INIT_RAM_ADDR@h
+ ori r1, r1, CFG_INIT_SP_OFFSET@l
+
+ lis r4, (CFG_INIT_RAM_END >> 2)@h
+ ori r4, r4, (CFG_INIT_RAM_END >> 2)@l
mtctr r4
- lis r2,CFG_INIT_RAM_ADDR@h /* we also clear data area */
- ori r2,r2,CFG_INIT_RAM_END@l /* so cant copy value from r1 */
+ lis r2, CFG_INIT_RAM_ADDR@h
+ ori r2, r2, CFG_INIT_RAM_END@l
- lis r4,0xdead /* we store 0xdeaddead in the stack */
- ori r4,r4,0xdead
+ lis r4, CFG_INIT_RAM_PATTERN@h
+ ori r4, r4, CFG_INIT_RAM_PATTERN@l
..stackloop:
- stwu r4,-4(r2)
+ stwu r4, -4(r2)
bdnz ..stackloop
- li r0, 0 /* Make room for stack frame header and */
- stwu r0, -4(r1) /* clear final stack frame so that */
- stwu r0, -4(r1) /* stack backtraces terminate cleanly */
+ /*
+ * Make room for stack frame header and clear final stack frame so
+ * that stack backtraces terminate cleanly.
+ */
+ stwu r0, -4(r1)
+ stwu r0, -4(r1)
+
/*
* Set up a dummy frame to store reset vector as return address.
* this causes stack underflow to reset board.
@@ -1328,33 +1445,72 @@
* This "function" does not return, instead it continues in RAM
* after relocating the monitor code.
*
- * r3 = dest
- * r4 = src
- * r5 = length in bytes
- * r6 = cachelinesize
+ * r3 = Relocated stack pointer
+ * r4 = Relocated global data pointer
+ * r5 = Relocated text pointer
*/
.globl relocate_code
relocate_code:
-#ifdef CONFIG_4xx_DCACHE
+#if defined(CONFIG_4xx_DCACHE) || defined(CFG_INIT_DCACHE_CS)
/*
- * We need to flush the Init Data before the dcache will be
- * invalidated
+ * We need to flush the initial global data (gd_t) before the dcache
+ * will be invalidated.
*/
- /* save regs */
- mr r9,r3
- mr r10,r4
- mr r11,r5
+ /* Save registers */
+ mr r9, r3
+ mr r10, r4
+ mr r11, r5
- mr r3,r4
- addi r4,r4,0x200 /* should be enough for init data */
+ /* Flush initial global data range */
+ mr r3, r4
+ addi r4, r4, CFG_GBL_DATA_SIZE@l
bl flush_dcache_range
- /* restore regs */
- mr r3,r9
- mr r4,r10
- mr r5,r11
-#endif
+#if defined(CFG_INIT_DCACHE_CS)
+ /*
+ * Undo the earlier data cache set-up for the primordial stack and
+ * data area. First, invalidate the data cache and then disable data
+ * cacheability for that area. Finally, restore the EBC values, if
+ * any.
+ */
+
+ /* Invalidate the primordial stack and data area in cache */
+ lis r3, CFG_INIT_RAM_ADDR@h
+ ori r3, r3, CFG_INIT_RAM_ADDR@l
+
+ lis r4, CFG_INIT_RAM_END@h
+ ori r4, r4, CFG_INIT_RAM_END@l
+ add r4, r4, r3
+
+ bl invalidate_dcache_range
+
+ /* Disable cacheability for the region */
+ mfdccr r3
+ lis r4, ~PPC_128MB_SACR_VALUE(CFG_INIT_RAM_ADDR)@h
+ ori r4, r4, ~PPC_128MB_SACR_VALUE(CFG_INIT_RAM_ADDR)@l
+ and r3, r3, r4
+ mtdccr r3
+
+ /* Restore the EBC parameters */
+ li r3, PBxAP
+ mtdcr ebccfga, r3
+ lis r3, PBxAP_VAL@h
+ ori r3, r3, PBxAP_VAL@l
+ mtdcr ebccfgd, r3
+
+ li r3, PBxCR
+ mtdcr ebccfga, r3
+ lis r3, PBxCR_VAL@h
+ ori r3, r3, PBxCR_VAL@l
+ mtdcr ebccfgd, r3
+#endif /* defined(CFG_INIT_DCACHE_CS) */
+
+ /* Restore registers */
+ mr r3, r9
+ mr r4, r10
+ mr r5, r11
+#endif /* defined(CONFIG_4xx_DCACHE) || defined(CFG_INIT_DCACHE_CS) */
#ifdef CFG_INIT_RAM_DCACHE
/*
@@ -1396,13 +1552,13 @@
addi r1,r0,CFG_TLB_FOR_BOOT_FLASH /* Use defined TLB */
#else
addi r1,r0,0x0000 /* Default TLB entry is #0 */
-#endif
+#endif /* CFG_TLB_FOR_BOOT_FLASH */
tlbre r0,r1,0x0002 /* Read contents */
ori r0,r0,0x0c00 /* Or in the inhibit, write through bit */
tlbwe r0,r1,0x0002 /* Save it out */
sync
isync
-#endif
+#endif /* defined(CONFIG_440EP) || ... || defined(CONFIG_460GT) */
mr r1, r3 /* Set new stack pointer */
mr r9, r4 /* Save copy of Init Data pointer */
mr r10, r5 /* Save copy of Destination Address */
@@ -1425,7 +1581,7 @@
/* First our own GOT */
add r14, r14, r15
- /* the the one used by the C code */
+ /* then the one used by the C code */
add r30, r30, r15
/*
diff --git a/cpu/ppc4xx/traps.c b/cpu/ppc4xx/traps.c
index 38b6f89..8b7e32a 100644
--- a/cpu/ppc4xx/traps.c
+++ b/cpu/ppc4xx/traps.c
@@ -170,7 +170,7 @@
val = get_esr();
-#if !defined(CONFIG_440)
+#if !defined(CONFIG_440) && !defined(CONFIG_405EX)
if (val& ESR_IMCP) {
printf("Instruction");
mtspr(ESR, val & ~ESR_IMCP);
@@ -179,7 +179,7 @@
}
printf(" machine check.\n");
-#elif defined(CONFIG_440)
+#elif defined(CONFIG_440) || defined(CONFIG_405EX)
if (val& ESR_IMCP){
printf("Instruction Synchronous Machine Check exception\n");
mtspr(SPRN_ESR, val & ~ESR_IMCP);
@@ -187,10 +187,15 @@
val = mfspr(MCSR);
if (val & MCSR_IB)
printf("Instruction Read PLB Error\n");
+#if defined(CONFIG_440)
if (val & MCSR_DRB)
printf("Data Read PLB Error\n");
if (val & MCSR_DWB)
printf("Data Write PLB Error\n");
+#else
+ if (val & MCSR_DB)
+ printf("Data PLB Error\n");
+#endif
if (val & MCSR_TLBP)
printf("TLB Parity Error\n");
if (val & MCSR_ICP){
diff --git a/include/asm-ppc/processor.h b/include/asm-ppc/processor.h
index 8bdfb9d..cfd8440 100644
--- a/include/asm-ppc/processor.h
+++ b/include/asm-ppc/processor.h
@@ -460,17 +460,19 @@
#define SPRN_PID2 0x27a /* Process ID Register 2 */
#define SPRN_MCSR 0x23c /* Machine Check Syndrome register */
#define SPRN_MCAR 0x23d /* Machine Check Address register */
-#ifdef CONFIG_440
#define MCSR_MCS 0x80000000 /* Machine Check Summary */
#define MCSR_IB 0x40000000 /* Instruction PLB Error */
+#if defined(CONFIG_440)
#define MCSR_DRB 0x20000000 /* Data Read PLB Error */
#define MCSR_DWB 0x10000000 /* Data Write PLB Error */
+#else
+#define MCSR_DB 0x20000000 /* Data PLB Error */
+#endif /* defined(CONFIG_440) */
#define MCSR_TLBP 0x08000000 /* TLB Parity Error */
#define MCSR_ICP 0x04000000 /* I-Cache Parity Error */
#define MCSR_DCSP 0x02000000 /* D-Cache Search Parity Error */
#define MCSR_DCFP 0x01000000 /* D-Cache Flush Parity Error */
#define MCSR_IMPE 0x00800000 /* Imprecise Machine Check Exception */
-#endif
#define ESR_ST 0x00800000 /* Store Operation */
#if defined(CONFIG_MPC86xx)
diff --git a/include/ppc405.h b/include/ppc405.h
index d953378..c994289 100644
--- a/include/ppc405.h
+++ b/include/ppc405.h
@@ -22,6 +22,10 @@
#ifndef __PPC405_H__
#define __PPC405_H__
+/* Define bits and masks for real-mode storage attribute control registers */
+#define PPC_128MB_SACR_BIT(addr) ((addr) >> 27)
+#define PPC_128MB_SACR_VALUE(addr) PPC_REG_VAL(PPC_128MB_SACR_BIT(addr),1)
+
#ifndef CONFIG_IOP480
#define CFG_DCACHE_SIZE (16 << 10) /* For AMCC 405 CPUs */
#else
@@ -363,6 +367,120 @@
#endif /* defined(CONFIG_405EZ) */
/******************************************************************************
+ * External Bus Controller (EBC)
+ *****************************************************************************/
+
+/* Bank Configuration Register */
+#define EBC_BXCR_BAS_MASK PPC_REG_VAL(11, 0xFFF)
+#define EBC_BXCR_BAS_ENCODE(n) (((static_cast(unsigned long, n)) & \
+ EBC_BXCR_BAS_MASK) << 0)
+#define EBC_BXCR_BS_MASK PPC_REG_VAL(14, 0x7)
+#define EBC_BXCR_BS_1MB PPC_REG_VAL(14, 0x0)
+#define EBC_BXCR_BS_2MB PPC_REG_VAL(14, 0x1)
+#define EBC_BXCR_BS_4MB PPC_REG_VAL(14, 0x2)
+#define EBC_BXCR_BS_8MB PPC_REG_VAL(14, 0x3)
+#define EBC_BXCR_BS_16MB PPC_REG_VAL(14, 0x4)
+#define EBC_BXCR_BS_32MB PPC_REG_VAL(14, 0x5)
+#define EBC_BXCR_BS_64MB PPC_REG_VAL(14, 0x6)
+#define EBC_BXCR_BS_128MB PPC_REG_VAL(14, 0x7)
+#define EBC_BXCR_BU_MASK PPC_REG_VAL(16, 0x3)
+#define EBC_BXCR_BU_NONE PPC_REG_VAL(16, 0x0)
+#define EBC_BXCR_BU_R PPC_REG_VAL(16, 0x1)
+#define EBC_BXCR_BU_W PPC_REG_VAL(16, 0x2)
+#define EBC_BXCR_BU_RW PPC_REG_VAL(16, 0x3)
+#define EBC_BXCR_BW_MASK PPC_REG_VAL(18, 0x3)
+#define EBC_BXCR_BW_8BIT PPC_REG_VAL(18, 0x0)
+#define EBC_BXCR_BW_16BIT PPC_REG_VAL(18, 0x1)
+#define EBC_BXCR_BW_32BIT PPC_REG_VAL(18, 0x3)
+
+/* Bank Access Parameter Register */
+#define EBC_BXAP_BME_ENABLED PPC_REG_VAL(0, 0x1)
+#define EBC_BXAP_BME_DISABLED PPC_REG_VAL(0, 0x0)
+#define EBC_BXAP_TWT_ENCODE(n) PPC_REG_VAL(8, \
+ (static_cast(unsigned long, n)) \
+ & 0xFF)
+#define EBC_BXAP_FWT_ENCODE(n) PPC_REG_VAL(5, \
+ (static_cast(unsigned long, n)) \
+ & 0x1F)
+#define EBC_BXAP_BWT_ENCODE(n) PPC_REG_VAL(8, \
+ (static_cast(unsigned long, n)) \
+ & 0x7)
+#define EBC_BXAP_BCE_DISABLE PPC_REG_VAL(9, 0x0)
+#define EBC_BXAP_BCE_ENABLE PPC_REG_VAL(9, 0x1)
+#define EBC_BXAP_BCT_MASK PPC_REG_VAL(11, 0x3)
+#define EBC_BXAP_BCT_2TRANS PPC_REG_VAL(11, 0x0)
+#define EBC_BXAP_BCT_4TRANS PPC_REG_VAL(11, 0x1)
+#define EBC_BXAP_BCT_8TRANS PPC_REG_VAL(11, 0x2)
+#define EBC_BXAP_BCT_16TRANS PPC_REG_VAL(11, 0x3)
+#define EBC_BXAP_CSN_ENCODE(n) PPC_REG_VAL(13, \
+ (static_cast(unsigned long, n)) \
+ & 0x3)
+#define EBC_BXAP_OEN_ENCODE(n) PPC_REG_VAL(15, \
+ (static_cast(unsigned long, n)) \
+ & 0x3)
+#define EBC_BXAP_WBN_ENCODE(n) PPC_REG_VAL(17, \
+ (static_cast(unsigned long, n)) \
+ & 0x3)
+#define EBC_BXAP_WBF_ENCODE(n) PPC_REG_VAL(19, \
+ (static_cast(unsigned long, n)) \
+ & 0x3)
+#define EBC_BXAP_TH_ENCODE(n) PPC_REG_VAL(22, \
+ (static_cast(unsigned long, n)) \
+ & 0x7)
+#define EBC_BXAP_RE_ENABLED PPC_REG_VAL(23, 0x1)
+#define EBC_BXAP_RE_DISABLED PPC_REG_VAL(23, 0x0)
+#define EBC_BXAP_SOR_DELAYED PPC_REG_VAL(24, 0x0)
+#define EBC_BXAP_SOR_NONDELAYED PPC_REG_VAL(24, 0x1)
+#define EBC_BXAP_BEM_WRITEONLY PPC_REG_VAL(25, 0x0)
+#define EBC_BXAP_BEM_RW PPC_REG_VAL(25, 0x1)
+#define EBC_BXAP_PEN_DISABLED PPC_REG_VAL(26, 0x0)
+#define EBC_BXAP_PEN_ENABLED PPC_REG_VAL(26, 0x1)
+
+/* Configuration Register */
+#define EBC_CFG_LE_MASK PPC_REG_VAL(0, 0x1)
+#define EBC_CFG_LE_UNLOCK PPC_REG_VAL(0, 0x0)
+#define EBC_CFG_LE_LOCK PPC_REG_VAL(0, 0x1)
+#define EBC_CFG_PTD_MASK PPC_REG_VAL(1, 0x1)
+#define EBC_CFG_PTD_ENABLE PPC_REG_VAL(1, 0x0)
+#define EBC_CFG_PTD_DISABLE PPC_REG_VAL(1, 0x1)
+#define EBC_CFG_RTC_MASK PPC_REG_VAL(4, 0x7)
+#define EBC_CFG_RTC_16PERCLK PPC_REG_VAL(4, 0x0)
+#define EBC_CFG_RTC_32PERCLK PPC_REG_VAL(4, 0x1)
+#define EBC_CFG_RTC_64PERCLK PPC_REG_VAL(4, 0x2)
+#define EBC_CFG_RTC_128PERCLK PPC_REG_VAL(4, 0x3)
+#define EBC_CFG_RTC_256PERCLK PPC_REG_VAL(4, 0x4)
+#define EBC_CFG_RTC_512PERCLK PPC_REG_VAL(4, 0x5)
+#define EBC_CFG_RTC_1024PERCLK PPC_REG_VAL(4, 0x6)
+#define EBC_CFG_RTC_2048PERCLK PPC_REG_VAL(4, 0x7)
+#define EBC_CFG_ATC_MASK PPC_REG_VAL(5, 0x1)
+#define EBC_CFG_ATC_HI PPC_REG_VAL(5, 0x0)
+#define EBC_CFG_ATC_PREVIOUS PPC_REG_VAL(5, 0x1)
+#define EBC_CFG_DTC_MASK PPC_REG_VAL(6, 0x1)
+#define EBC_CFG_DTC_HI PPC_REG_VAL(6, 0x0)
+#define EBC_CFG_DTC_PREVIOUS PPC_REG_VAL(6, 0x1)
+#define EBC_CFG_CTC_MASK PPC_REG_VAL(7, 0x1)
+#define EBC_CFG_CTC_HI PPC_REG_VAL(7, 0x0)
+#define EBC_CFG_CTC_PREVIOUS PPC_REG_VAL(7, 0x1)
+#define EBC_CFG_OEO_MASK PPC_REG_VAL(8, 0x1)
+#define EBC_CFG_OEO_DISABLE PPC_REG_VAL(8, 0x0)
+#define EBC_CFG_OEO_ENABLE PPC_REG_VAL(8, 0x1)
+#define EBC_CFG_EMC_MASK PPC_REG_VAL(9, 0x1)
+#define EBC_CFG_EMC_NONDEFAULT PPC_REG_VAL(9, 0x0)
+#define EBC_CFG_EMC_DEFAULT PPC_REG_VAL(9, 0x1)
+#define EBC_CFG_PME_MASK PPC_REG_VAL(14, 0x1)
+#define EBC_CFG_PME_DISABLE PPC_REG_VAL(14, 0x0)
+#define EBC_CFG_PME_ENABLE PPC_REG_VAL(14, 0x1)
+#define EBC_CFG_PMT_MASK PPC_REG_VAL(19, 0x1F)
+#define EBC_CFG_PMT_ENCODE(n) PPC_REG_VAL(19, \
+ (static_cast(unsigned long, n)) \
+ & 0x1F)
+#define EBC_CFG_PR_MASK PPC_REG_VAL(21, 0x3)
+#define EBC_CFG_PR_16 PPC_REG_VAL(21, 0x0)
+#define EBC_CFG_PR_32 PPC_REG_VAL(21, 0x1)
+#define EBC_CFG_PR_64 PPC_REG_VAL(21, 0x2)
+#define EBC_CFG_PR_128 PPC_REG_VAL(21, 0x3)
+
+/******************************************************************************
* SDRAM Controller
******************************************************************************/
/* values for memcfga register - indirect addressing of these regs */
@@ -1218,19 +1336,43 @@
/*-----------------------------------------------------------------------------+
| Memory Bank 0-7 configuration
-+-----------------------------------------------------------------------------*/
-#define SDRAM_RXBAS_SDSZ_4 0x00000000 /* 4M */
-#define SDRAM_RXBAS_SDSZ_8 0x00001000 /* 8M */
-#define SDRAM_RXBAS_SDSZ_16 0x00002000 /* 16M */
-#define SDRAM_RXBAS_SDSZ_32 0x00003000 /* 32M */
-#define SDRAM_RXBAS_SDSZ_64 0x00004000 /* 64M */
-#define SDRAM_RXBAS_SDSZ_128 0x00005000 /* 128M */
-#define SDRAM_RXBAS_SDSZ_256 0x00006000 /* 256M */
-#define SDRAM_RXBAS_SDSZ_512 0x00007000 /* 512M */
-#define SDRAM_RXBAS_SDSZ_1024 0x00008000 /* 1024M */
-#define SDRAM_RXBAS_SDSZ_2048 0x00009000 /* 2048M */
-#define SDRAM_RXBAS_SDSZ_4096 0x0000a000 /* 4096M */
-#define SDRAM_RXBAS_SDSZ_8192 0x0000b000 /* 8192M */
++----------------------------------------------------------------------------*/
+#define SDRAM_RXBAS_SDSZ_MASK PPC_REG_VAL(19, 0xF)
+#define SDRAM_RXBAS_SDSZ_4MB PPC_REG_VAL(19, 0x0)
+#define SDRAM_RXBAS_SDSZ_8MB PPC_REG_VAL(19, 0x1)
+#define SDRAM_RXBAS_SDSZ_16MB PPC_REG_VAL(19, 0x2)
+#define SDRAM_RXBAS_SDSZ_32MB PPC_REG_VAL(19, 0x3)
+#define SDRAM_RXBAS_SDSZ_64MB PPC_REG_VAL(19, 0x4)
+#define SDRAM_RXBAS_SDSZ_128MB PPC_REG_VAL(19, 0x5)
+#define SDRAM_RXBAS_SDSZ_256MB PPC_REG_VAL(19, 0x6)
+#define SDRAM_RXBAS_SDSZ_512MB PPC_REG_VAL(19, 0x7)
+#define SDRAM_RXBAS_SDSZ_1024MB PPC_REG_VAL(19, 0x8)
+#define SDRAM_RXBAS_SDSZ_2048MB PPC_REG_VAL(19, 0x9)
+#define SDRAM_RXBAS_SDSZ_4096MB PPC_REG_VAL(19, 0xA)
+#define SDRAM_RXBAS_SDSZ_8192MB PPC_REG_VAL(19, 0xB)
+#define SDRAM_RXBAS_SDSZ_8 SDRAM_RXBAS_SDSZ_8MB
+#define SDRAM_RXBAS_SDSZ_16 SDRAM_RXBAS_SDSZ_16MB
+#define SDRAM_RXBAS_SDSZ_32 SDRAM_RXBAS_SDSZ_32MB
+#define SDRAM_RXBAS_SDSZ_64 SDRAM_RXBAS_SDSZ_64MB
+#define SDRAM_RXBAS_SDSZ_128 SDRAM_RXBAS_SDSZ_128MB
+#define SDRAM_RXBAS_SDSZ_256 SDRAM_RXBAS_SDSZ_256MB
+#define SDRAM_RXBAS_SDSZ_512 SDRAM_RXBAS_SDSZ_512MB
+#define SDRAM_RXBAS_SDSZ_1024 SDRAM_RXBAS_SDSZ_1024MB
+#define SDRAM_RXBAS_SDSZ_2048 SDRAM_RXBAS_SDSZ_2048MB
+#define SDRAM_RXBAS_SDSZ_4096 SDRAM_RXBAS_SDSZ_4096MB
+#define SDRAM_RXBAS_SDSZ_8192 SDRAM_RXBAS_SDSZ_8192MB
+#define SDRAM_RXBAS_SDAM_MODE0 PPC_REG_VAL(23, 0x0)
+#define SDRAM_RXBAS_SDAM_MODE1 PPC_REG_VAL(23, 0x1)
+#define SDRAM_RXBAS_SDAM_MODE2 PPC_REG_VAL(23, 0x2)
+#define SDRAM_RXBAS_SDAM_MODE3 PPC_REG_VAL(23, 0x3)
+#define SDRAM_RXBAS_SDAM_MODE4 PPC_REG_VAL(23, 0x4)
+#define SDRAM_RXBAS_SDAM_MODE5 PPC_REG_VAL(23, 0x5)
+#define SDRAM_RXBAS_SDAM_MODE6 PPC_REG_VAL(23, 0x6)
+#define SDRAM_RXBAS_SDAM_MODE7 PPC_REG_VAL(23, 0x7)
+#define SDRAM_RXBAS_SDAM_MODE8 PPC_REG_VAL(23, 0x8)
+#define SDRAM_RXBAS_SDAM_MODE9 PPC_REG_VAL(23, 0x9)
+#define SDRAM_RXBAS_SDBE_DISABLE PPC_REG_VAL(31, 0x0)
+#define SDRAM_RXBAS_SDBE_ENABLE PPC_REG_VAL(31, 0x1)
/*-----------------------------------------------------------------------------+
| Memory Controller Status
@@ -1612,4 +1754,27 @@
#define SDR0_PFC1_GPT_FREQ 0x0000000f
#endif
+/* General Purpose Timer (GPT) Register Offsets */
+#define GPT0_TBC 0x00000000
+#define GPT0_IM 0x00000018
+#define GPT0_ISS 0x0000001C
+#define GPT0_ISC 0x00000020
+#define GPT0_IE 0x00000024
+#define GPT0_COMP0 0x00000080
+#define GPT0_COMP1 0x00000084
+#define GPT0_COMP2 0x00000088
+#define GPT0_COMP3 0x0000008C
+#define GPT0_COMP4 0x00000090
+#define GPT0_COMP5 0x00000094
+#define GPT0_COMP6 0x00000098
+#define GPT0_MASK0 0x000000C0
+#define GPT0_MASK1 0x000000C4
+#define GPT0_MASK2 0x000000C8
+#define GPT0_MASK3 0x000000CC
+#define GPT0_MASK4 0x000000D0
+#define GPT0_MASK5 0x000000D4
+#define GPT0_MASK6 0x000000D8
+#define GPT0_DCT0 0x00000110
+#define GPT0_DCIS 0x0000011C
+
#endif /* __PPC405_H__ */
diff --git a/include/ppc4xx.h b/include/ppc4xx.h
index 76fe872..4a6eb86 100644
--- a/include/ppc4xx.h
+++ b/include/ppc4xx.h
@@ -29,6 +29,21 @@
#endif
/*
+ * Macro for generating register field mnemonics
+ */
+#define PPC_REG_BITS 32
+#define PPC_REG_VAL(bit, value) ((value) << ((PPC_REG_BITS - 1) - (bit)))
+
+/*
+ * Elide casts when assembling register mnemonics
+ */
+#ifndef __ASSEMBLY__
+#define static_cast(type, val) (type)(val)
+#else
+#define static_cast(type, val) (val)
+#endif
+
+/*
* Common stuff for 4xx (405 and 440)
*/
