MPC512x: factor out common code

Now that we have 3 boards for the MPC512x it turns out that they all
use the very same fixed_sdram() code.

This patch factors out this common code into cpu/mpc512x/fixed_sdram.c
and adds a new header file, include/asm-ppc/mpc512x.h, with some
macros, inline functions and prototype definitions specific to MPC512x
systems.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Stefan Roese <sr@denx.de>
Cc: Reinhard Arlt <reinhard.arlt@esd-electronics.com>

1 files changed, 6 insertions, 112 deletions

diff --git a/board/freescale/mpc5121ads/mpc5121ads.c b/board/freescale/mpc5121ads/mpc5121ads.c
index ec74fd3..a0d7a82 100644
--- a/board/freescale/mpc5121ads/mpc5121ads.c
+++ b/board/freescale/mpc5121ads/mpc5121ads.c
@@ -26,6 +26,7 @@
 #include <command.h>
 #include <asm/io.h>
 #include <asm/processor.h>
+#include <asm/mpc512x.h>
 #include <fdt_support.h>
 #ifdef CONFIG_MISC_INIT_R
 #include <i2c.h>
@@ -36,9 +37,6 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-extern int mpc5121_diu_init(void);
-extern void ide_set_reset(int idereset);
-
 /* Clocks in use */
 #define SCCR1_CLOCKS_EN	(CLOCK_SCCR1_CFG_EN |				\
 			 CLOCK_SCCR1_DDR_EN |				\
@@ -56,10 +54,6 @@ extern void ide_set_reset(int idereset);
 			 CLOCK_SCCR2_MEM_EN |		\
 			 CLOCK_SCCR2_SPDIF_EN)
 
-#define CSAW_START(start)	((start) & 0xFFFF0000)
-#define CSAW_STOP(start, size)	(((start) + (size) - 1) >> 16)
-
-long int fixed_sdram(void);
 void __mpc5121_nfc_select_chip(struct mtd_info *mtd, int chip);
 
 /* Active chip number set in board_nand_select_device() (mpc5121_nfc.c) */
@@ -84,10 +78,10 @@ void mpc5121_nfc_select_chip(struct mtd_info *mtd, int chip)
 	out_8(csreg, v);
 }
 
-int board_early_init_f (void)
+int board_early_init_f(void)
 {
 	volatile immap_t *im = (immap_t *) CONFIG_SYS_IMMR;
-	u32 lpcaw, spridr;
+	u32 spridr;
 
 	/*
 	 * Initialize Local Window for the CPLD registers access (CS2 selects
@@ -98,14 +92,7 @@ int board_early_init_f (void)
 		CSAW_STOP(CONFIG_SYS_CPLD_BASE, CONFIG_SYS_CPLD_SIZE)
 	);
 	out_be32(&im->lpc.cs_cfg[2], CONFIG_SYS_CS2_CFG);
-
-	/*
-	 * According to MPC5121e RM, configuring local access windows should
-	 * be followed by a dummy read of the config register that was
-	 * modified last and an isync
-	 */
-	lpcaw = in_be32(&im->sysconf.lpcs6aw);
-	__asm__ __volatile__ ("isync");
+	sync_law(&im->sysconf.lpcs2aw);
 
 	/*
 	 * Disable Boot NOR FLASH write protect - CPLD Reg 8 NOR FLASH Control
@@ -146,104 +133,11 @@ int board_early_init_f (void)
 	return 0;
 }
 
-phys_size_t initdram (int board_type)
+phys_size_t initdram(int board_type)
 {
 	u32 msize = 0;
 
-	msize = fixed_sdram ();
-
-	return msize;
-}
-
-/*
- * fixed sdram init -- the board doesn't use memory modules that have serial presence
- * detect or similar mechanism for discovery of the DRAM settings
- */
-long int fixed_sdram (void)
-{
-	volatile immap_t *im = (immap_t *) CONFIG_SYS_IMMR;
-	u32 msize = CONFIG_SYS_DDR_SIZE * 1024 * 1024;
-	u32 msize_log2 = __ilog2 (msize);
-	u32 i;
-
-	/* Initialize IO Control */
-	out_be32 (&im->io_ctrl.io_control_mem, IOCTRL_MUX_DDR);
-
-	/* Initialize DDR Local Window */
-	out_be32 (&im->sysconf.ddrlaw.bar, CONFIG_SYS_DDR_BASE & 0xFFFFF000);
-	out_be32 (&im->sysconf.ddrlaw.ar, msize_log2 - 1);
-
-	/*
-	 * According to MPC5121e RM, configuring local access windows should
-	 * be followed by a dummy read of the config register that was
-	 * modified last and an isync
-	 */
-	in_be32(&im->sysconf.ddrlaw.ar);
-	__asm__ __volatile__ ("isync");
-
-	/* Enable DDR */
-	out_be32(&im->mddrc.ddr_sys_config, CONFIG_SYS_MDDRC_SYS_CFG_EN);
-
-	/* Initialize DDR Priority Manager */
-	out_be32(&im->mddrc.prioman_config1, CONFIG_SYS_MDDRCGRP_PM_CFG1);
-	out_be32(&im->mddrc.prioman_config2, CONFIG_SYS_MDDRCGRP_PM_CFG2);
-	out_be32(&im->mddrc.hiprio_config, CONFIG_SYS_MDDRCGRP_HIPRIO_CFG);
-	out_be32(&im->mddrc.lut_table0_main_upper, CONFIG_SYS_MDDRCGRP_LUT0_MU);
-	out_be32(&im->mddrc.lut_table0_main_lower, CONFIG_SYS_MDDRCGRP_LUT0_ML);
-	out_be32(&im->mddrc.lut_table1_main_upper, CONFIG_SYS_MDDRCGRP_LUT1_MU);
-	out_be32(&im->mddrc.lut_table1_main_lower, CONFIG_SYS_MDDRCGRP_LUT1_ML);
-	out_be32(&im->mddrc.lut_table2_main_upper, CONFIG_SYS_MDDRCGRP_LUT2_MU);
-	out_be32(&im->mddrc.lut_table2_main_lower, CONFIG_SYS_MDDRCGRP_LUT2_ML);
-	out_be32(&im->mddrc.lut_table3_main_upper, CONFIG_SYS_MDDRCGRP_LUT3_MU);
-	out_be32(&im->mddrc.lut_table3_main_lower, CONFIG_SYS_MDDRCGRP_LUT3_ML);
-	out_be32(&im->mddrc.lut_table4_main_upper, CONFIG_SYS_MDDRCGRP_LUT4_MU);
-	out_be32(&im->mddrc.lut_table4_main_lower, CONFIG_SYS_MDDRCGRP_LUT4_ML);
-	out_be32(&im->mddrc.lut_table0_alternate_upper, CONFIG_SYS_MDDRCGRP_LUT0_AU);
-	out_be32(&im->mddrc.lut_table0_alternate_lower, CONFIG_SYS_MDDRCGRP_LUT0_AL);
-	out_be32(&im->mddrc.lut_table1_alternate_upper, CONFIG_SYS_MDDRCGRP_LUT1_AU);
-	out_be32(&im->mddrc.lut_table1_alternate_lower, CONFIG_SYS_MDDRCGRP_LUT1_AL);
-	out_be32(&im->mddrc.lut_table2_alternate_upper, CONFIG_SYS_MDDRCGRP_LUT2_AU);
-	out_be32(&im->mddrc.lut_table2_alternate_lower, CONFIG_SYS_MDDRCGRP_LUT2_AL);
-	out_be32(&im->mddrc.lut_table3_alternate_upper, CONFIG_SYS_MDDRCGRP_LUT3_AU);
-	out_be32(&im->mddrc.lut_table3_alternate_lower, CONFIG_SYS_MDDRCGRP_LUT3_AL);
-	out_be32(&im->mddrc.lut_table4_alternate_upper, CONFIG_SYS_MDDRCGRP_LUT4_AU);
-	out_be32(&im->mddrc.lut_table4_alternate_lower, CONFIG_SYS_MDDRCGRP_LUT4_AL);
-
-	/* Initialize MDDRC */
-	out_be32(&im->mddrc.ddr_sys_config, CONFIG_SYS_MDDRC_SYS_CFG);
-	out_be32(&im->mddrc.ddr_time_config0, CONFIG_SYS_MDDRC_TIME_CFG0);
-	out_be32(&im->mddrc.ddr_time_config1, CONFIG_SYS_MDDRC_TIME_CFG1);
-	out_be32(&im->mddrc.ddr_time_config2, CONFIG_SYS_MDDRC_TIME_CFG2);
-
-	/* Initialize DDR */
-	for (i = 0; i < 10; i++)
-		out_be32(&im->mddrc.ddr_command, CONFIG_SYS_MICRON_NOP);
-
-	out_be32(&im->mddrc.ddr_command, CONFIG_SYS_MICRON_PCHG_ALL);
-	out_be32(&im->mddrc.ddr_command, CONFIG_SYS_MICRON_NOP);
-	out_be32(&im->mddrc.ddr_command, CONFIG_SYS_MICRON_RFSH);
-	out_be32(&im->mddrc.ddr_command, CONFIG_SYS_MICRON_NOP);
-	out_be32(&im->mddrc.ddr_command, CONFIG_SYS_MICRON_RFSH);
-	out_be32(&im->mddrc.ddr_command, CONFIG_SYS_MICRON_NOP);
-	out_be32(&im->mddrc.ddr_command, CONFIG_SYS_MICRON_INIT_DEV_OP);
-	out_be32(&im->mddrc.ddr_command, CONFIG_SYS_MICRON_NOP);
-	out_be32(&im->mddrc.ddr_command, CONFIG_SYS_MICRON_EM2);
-	out_be32(&im->mddrc.ddr_command, CONFIG_SYS_MICRON_NOP);
-	out_be32(&im->mddrc.ddr_command, CONFIG_SYS_MICRON_PCHG_ALL);
-	out_be32(&im->mddrc.ddr_command, CONFIG_SYS_MICRON_EM2);
-	out_be32(&im->mddrc.ddr_command, CONFIG_SYS_MICRON_EM3);
-	out_be32(&im->mddrc.ddr_command, CONFIG_SYS_MICRON_EN_DLL);
-	out_be32(&im->mddrc.ddr_command, CONFIG_SYS_MICRON_INIT_DEV_OP);
-	out_be32(&im->mddrc.ddr_command, CONFIG_SYS_MICRON_PCHG_ALL);
-	out_be32(&im->mddrc.ddr_command, CONFIG_SYS_MICRON_RFSH);
-	out_be32(&im->mddrc.ddr_command, CONFIG_SYS_MICRON_INIT_DEV_OP);
-	out_be32(&im->mddrc.ddr_command, CONFIG_SYS_MICRON_OCD_DEFAULT);
-	out_be32(&im->mddrc.ddr_command, CONFIG_SYS_MICRON_PCHG_ALL);
-	out_be32(&im->mddrc.ddr_command, CONFIG_SYS_MICRON_NOP);
-
-	/* Start MDDRC */
-	out_be32(&im->mddrc.ddr_time_config0, CONFIG_SYS_MDDRC_TIME_CFG0_RUN);
-	out_be32(&im->mddrc.ddr_sys_config, CONFIG_SYS_MDDRC_SYS_CFG_RUN);
+	msize = fixed_sdram();
 
 	return msize;
 }