[U-Boot] [PATCH 3/3 v3] ppc4xx: Add lcd4_lwmon5 support
Stefan Roese
sr at denx.de
Fri Mar 8 16:50:41 CET 2013
This patch adds the fast booting LWMON5 derivat "lcd4_lwmon5".
Its a stripped down version of the full blown lwmon5 support,
without ECC, USB, POST and some other stuff. It used the newly
introduced SPL infrastrucure for SPL from NOR flash booting
on the PPC4xx.
By setting the environment variable "boot_os" to "yes", Linux
will be started from the SPL version. If not, the "normal"
U-Boot will be started.
Signed-off-by: Stefan Roese <sr at denx.de>
---
v3:
- Clear all soft-reset bits in the SRSTn registers in SPL. Otherwise
Linux will generate an floating point exception as the FPU is
still disabled.
v2:
- Call board_init_f() from spl_board_init(). This initializes
the PFC registers needed for example for working ethernet in Linux.
board/lwmon5/lwmon5.c | 75 ++++++++++++++++++++++++++++++++++++++++++++++--
board/lwmon5/sdram.c | 4 ++-
boards.cfg | 1 +
include/configs/lwmon5.h | 68 +++++++++++++++++++++++++++++++++++++++++--
4 files changed, 142 insertions(+), 6 deletions(-)
diff --git a/board/lwmon5/lwmon5.c b/board/lwmon5/lwmon5.c
index ecd9536..f7f64e7 100644
--- a/board/lwmon5/lwmon5.c
+++ b/board/lwmon5/lwmon5.c
@@ -1,5 +1,5 @@
/*
- * (C) Copyright 2007-2010
+ * (C) Copyright 2007-2013
* Stefan Roese, DENX Software Engineering, sr at denx.de.
*
* This program is free software; you can redistribute it and/or
@@ -200,9 +200,11 @@ int misc_init_r(void)
u32 pbcr;
int size_val = 0;
u32 reg;
+#ifndef CONFIG_LCD4_LWMON5
unsigned long usb2d0cr = 0;
unsigned long usb2phy0cr, usb2h0cr = 0;
unsigned long sdr0_pfc1, sdr0_srst;
+#endif
/*
* FLASH stuff...
@@ -233,6 +235,7 @@ int misc_init_r(void)
CONFIG_ENV_ADDR_REDUND + 2 * CONFIG_ENV_SECT_SIZE - 1,
&flash_info[cfi_flash_num_flash_banks - 1]);
+#ifndef CONFIG_LCD4_LWMON5
/*
* USB suff...
*/
@@ -306,6 +309,7 @@ int misc_init_r(void)
/* 7. Reassert internal PHY reset: */
mtsdr(SDR0_SRST1, SDR0_SRST1_USB20PHY);
udelay(1000);
+#endif
/*
* Clear resets
@@ -313,7 +317,9 @@ int misc_init_r(void)
mtsdr(SDR0_SRST1, 0x00000000);
mtsdr(SDR0_SRST0, 0x00000000);
+#ifndef CONFIG_LCD4_LWMON5
printf("USB: Host(int phy) Device(ext phy)\n");
+#endif
/*
* Clear PLB4A0_ACR[WRP]
@@ -323,10 +329,12 @@ int misc_init_r(void)
reg = mfdcr(PLB4A0_ACR) & ~PLB4Ax_ACR_WRP_MASK;
mtdcr(PLB4A0_ACR, reg);
+#ifndef CONFIG_LCD4_LWMON5
/*
* Init matrix keyboard
*/
misc_init_r_kbd();
+#endif
return 0;
}
@@ -336,7 +344,7 @@ int checkboard(void)
char buf[64];
int i = getenv_f("serial#", buf, sizeof(buf));
- puts("Board: lwmon5");
+ printf("Board: %s", __stringify(CONFIG_HOSTNAME));
if (i > 0) {
puts(", serial# ");
@@ -495,3 +503,66 @@ void board_reset(void)
{
gpio_write_bit(CONFIG_SYS_GPIO_BOARD_RESET, 1);
}
+
+#ifdef CONFIG_SPL_OS_BOOT
+/*
+ * lwmon5 specific implementation of spl_start_uboot()
+ *
+ * RETURN
+ * 0 if booting into OS is selected (default)
+ * 1 if booting into U-Boot is selected
+ */
+int spl_start_uboot(void)
+{
+ char s[8];
+
+ env_init();
+ getenv_f("boot_os", s, sizeof(s));
+ if ((s != NULL) && (strcmp(s, "yes") == 0))
+ return 0;
+
+ return 1;
+}
+
+/*
+ * This function is called from the SPL U-Boot version for
+ * early init stuff, that needs to be done for OS (e.g. Linux)
+ * booting. Doing it later in the real U-Boot would not work
+ * in case that the SPL U-Boot boots Linux directly.
+ */
+void spl_board_init(void)
+{
+ const gdc_regs *regs = board_get_regs();
+
+ /*
+ * Setup PFC registers, mainly for ethernet support
+ * later on in Linux
+ */
+ board_early_init_f();
+
+ /*
+ * Clear resets
+ */
+ mtsdr(SDR0_SRST1, 0x00000000);
+ mtsdr(SDR0_SRST0, 0x00000000);
+
+ /*
+ * Reset Lime controller
+ */
+ gpio_write_bit(CONFIG_SYS_GPIO_LIME_S, 1);
+ udelay(500);
+ gpio_write_bit(CONFIG_SYS_GPIO_LIME_RST, 1);
+
+ out_be32((void *)CONFIG_SYS_LIME_SDRAM_CLOCK, CONFIG_SYS_MB862xx_CCF);
+ udelay(300);
+ out_be32((void *)CONFIG_SYS_LIME_MMR, CONFIG_SYS_MB862xx_MMR);
+
+ while (regs->index) {
+ out_be32((void *)(CONFIG_SYS_LIME_BASE_0 + GC_DISP_BASE) +
+ regs->index, regs->value);
+ regs++;
+ }
+
+ board_backlight_brightness(DEFAULT_BRIGHTNESS);
+}
+#endif
diff --git a/board/lwmon5/sdram.c b/board/lwmon5/sdram.c
index b64b35a..78b8fbc 100644
--- a/board/lwmon5/sdram.c
+++ b/board/lwmon5/sdram.c
@@ -6,7 +6,7 @@
* Alain Saurel, AMCC/IBM, alain.saurel at fr.ibm.com
* Robert Snyder, AMCC/IBM, rob.snyder at fr.ibm.com
*
- * (C) Copyright 2007-2008
+ * (C) Copyright 2007-2013
* Stefan Roese, DENX Software Engineering, sr at denx.de.
*
* This program is free software; you can redistribute it and/or
@@ -160,6 +160,7 @@ static void program_ecc(u32 start_address,
************************************************************************/
phys_size_t initdram (int board_type)
{
+#if defined(CONFIG_SPL_BUILD) || !defined(CONFIG_LCD4_LWMON5)
/* CL=4 */
mtsdram(DDR0_02, 0x00000000);
@@ -253,6 +254,7 @@ phys_size_t initdram (int board_type)
* exceptions are enabled.
*/
set_mcsr(get_mcsr());
+#endif /* CONFIG_SPL_BUILD */
return (CONFIG_SYS_MBYTES_SDRAM << 20);
}
diff --git a/boards.cfg b/boards.cfg
index e4b0d44..2d1f12f 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -972,6 +972,7 @@ JSE powerpc ppc4xx jse
korat powerpc ppc4xx
korat_perm powerpc ppc4xx korat - - korat:KORAT_PERMANENT
lwmon5 powerpc ppc4xx
+lcd4_lwmon5 powerpc ppc4xx lwmon5 - - lwmon5:LCD4_LWMON5
pcs440ep powerpc ppc4xx
quad100hd powerpc ppc4xx
sbc405 powerpc ppc4xx
diff --git a/include/configs/lwmon5.h b/include/configs/lwmon5.h
index 2ebcd16..ba613e3 100644
--- a/include/configs/lwmon5.h
+++ b/include/configs/lwmon5.h
@@ -1,5 +1,5 @@
/*
- * (C) Copyright 2007-2010
+ * (C) Copyright 2007-2013
* Stefan Roese, DENX Software Engineering, sr at denx.de.
*
* This program is free software; you can redistribute it and/or
@@ -37,8 +37,12 @@
#define CONFIG_440 1 /* ... PPC440 family */
#define CONFIG_4xx 1 /* ... PPC4xx family */
-#ifndef CONFIG_SYS_TEXT_BASE
+#ifdef CONFIG_LCD4_LWMON5
+#define CONFIG_SYS_TEXT_BASE 0x01000000 /* SPL U-Boot TEXT_BASE */
+#define CONFIG_HOSTNAME lcd4_lwmon5
+#else
#define CONFIG_SYS_TEXT_BASE 0xFFF80000
+#define CONFIG_HOSTNAME lwmon5
#endif
#define CONFIG_SYS_CLK_FREQ 33300000 /* external freq to pll */
@@ -56,7 +60,7 @@
* actual resources get mapped (not physical addresses)
*/
#define CONFIG_SYS_MONITOR_BASE CONFIG_SYS_TEXT_BASE /* Start of U-Boot */
-#define CONFIG_SYS_MONITOR_LEN (0xFFFFFFFF - CONFIG_SYS_MONITOR_BASE + 1)
+#define CONFIG_SYS_MONITOR_LEN 0x80000
#define CONFIG_SYS_MALLOC_LEN (1 << 20) /* Reserved for malloc */
#define CONFIG_SYS_BOOT_BASE_ADDR 0xf0000000
@@ -75,9 +79,11 @@
#define CONFIG_SYS_PCI_MEMBASE2 (CONFIG_SYS_PCI_MEMBASE1 + 0x10000000)
#define CONFIG_SYS_PCI_MEMBASE3 (CONFIG_SYS_PCI_MEMBASE2 + 0x10000000)
+#ifndef CONFIG_LCD4_LWMON5
#define CONFIG_SYS_USB2D0_BASE 0xe0000100
#define CONFIG_SYS_USB_DEVICE 0xe0000000
#define CONFIG_SYS_USB_HOST 0xe0000400
+#endif
/*
* Initial RAM & stack pointer
@@ -87,12 +93,20 @@
* content during reset (GPT0_COMP6). This way we reserve the OCM (16k)
* for logbuffer only. (GPT0_COMP1-COMP5 are reserved for logbuffer header.)
*/
+#ifndef CONFIG_LCD4_LWMON5
#define CONFIG_SYS_INIT_RAM_DCACHE 1 /* d-cache as init ram */
#define CONFIG_SYS_INIT_RAM_ADDR 0x70000000 /* DCache */
#define CONFIG_SYS_INIT_RAM_SIZE (4 << 10)
#define CONFIG_SYS_GBL_DATA_OFFSET (CONFIG_SYS_INIT_RAM_SIZE - \
GENERATED_GBL_DATA_SIZE)
#define CONFIG_SYS_INIT_SP_OFFSET CONFIG_SYS_GBL_DATA_OFFSET
+#else
+#define CONFIG_SYS_INIT_RAM_ADDR CONFIG_SYS_OCM_BASE
+#define CONFIG_SYS_INIT_RAM_SIZE (4 << 10)
+#define CONFIG_SYS_GBL_DATA_OFFSET (CONFIG_SYS_INIT_RAM_SIZE - \
+ GENERATED_GBL_DATA_SIZE)
+#define CONFIG_SYS_INIT_SP_OFFSET (CONFIG_SYS_GBL_DATA_OFFSET - 0x4)
+#endif
/* unused GPT0 COMP reg */
#define CONFIG_SYS_POST_WORD_ADDR (CONFIG_SYS_PERIPHERAL_BASE + GPT0_COMP6)
#define CONFIG_SYS_OCM_SIZE (16 << 10)
@@ -166,8 +180,11 @@
#define CONFIG_SYS_MBYTES_SDRAM 256
#define CONFIG_SYS_DDR_CACHED_ADDR 0x40000000 /* setup 2nd TLB cached here */
#define CONFIG_DDR_DATA_EYE /* use DDR2 optimization */
+#ifndef CONFIG_LCD4_LWMON5
#define CONFIG_DDR_ECC /* enable ECC */
+#endif
+#ifndef CONFIG_LCD4_LWMON5
/* POST support */
#define CONFIG_POST (CONFIG_SYS_POST_CACHE | \
CONFIG_SYS_POST_CPU | \
@@ -276,6 +293,7 @@
#define CONFIG_ALT_LH_ADDR (CONFIG_SYS_PERIPHERAL_BASE + GPT0_COMP1)
#define CONFIG_ALT_LB_ADDR (CONFIG_SYS_OCM_BASE)
#define CONFIG_SYS_CONSOLE_IS_IN_ENV /* Otherwise it catches logbuffer as output */
+#endif
/*
* I2C
@@ -395,6 +413,7 @@
#define CONFIG_VIDEO_SW_CURSOR
#define CONFIG_SPLASH_SCREEN
+#ifndef CONFIG_LCD4_LWMON5
/*
* USB/EHCI
*/
@@ -410,6 +429,7 @@
#define CONFIG_MAC_PARTITION
#define CONFIG_DOS_PARTITION
#define CONFIG_ISO_PARTITION
+#endif
/*
* BOOTP options
@@ -444,9 +464,11 @@
#define CONFIG_CMD_BMP
#endif
+#ifndef CONFIG_LCD4_LWMON5
#ifdef CONFIG_440EPX
#define CONFIG_CMD_USB
#endif
+#endif
/*
* Miscellaneous configurable options
@@ -480,11 +502,15 @@
#define CONFIG_MX_CYCLIC 1 /* enable mdc/mwc commands */
#define CONFIG_VERSION_VARIABLE 1 /* include version env variable */
+#define CONFIG_SYS_CONSOLE_INFO_QUIET /* don't print console @ startup*/
+
+#ifndef CONFIG_LCD4_LWMON5
#ifndef DEBUG
#define CONFIG_HW_WATCHDOG 1 /* Use external HW-Watchdog */
#endif
#define CONFIG_WD_PERIOD 40000 /* in usec */
#define CONFIG_WD_MAX_RATE 66600 /* in ticks */
+#endif
/*
* For booting Linux, the board info and command line data
@@ -644,4 +670,40 @@
#define CONFIG_KGDB_BAUDRATE 230400 /* speed to run kgdb serial port */
#define CONFIG_KGDB_SER_INDEX 2 /* which serial port to use */
#endif
+
+/*
+ * SPL related defines
+ */
+#ifdef CONFIG_LCD4_LWMON5
+#define CONFIG_SPL
+#define CONFIG_SPL_FRAMEWORK
+#define CONFIG_SPL_BOARD_INIT
+#define CONFIG_SPL_NOR_SUPPORT
+#define CONFIG_SPL_TEXT_BASE 0xffff0000 /* last 64 KiB for SPL */
+#define CONFIG_SYS_SPL_MAX_LEN (64 << 10)
+#define CONFIG_UBOOT_PAD_TO 458752 /* decimal for 'dd' */
+#define CONFIG_SPL_START_S_PATH "arch/powerpc/cpu/ppc4xx"
+#define CONFIG_SPL_LDSCRIPT "arch/powerpc/cpu/ppc4xx/u-boot-spl.lds"
+#define CONFIG_SPL_LIBCOMMON_SUPPORT /* image.c */
+#define CONFIG_SPL_LIBGENERIC_SUPPORT /* string.c */
+#define CONFIG_SPL_SERIAL_SUPPORT
+
+/* Place BSS for SPL near end of SDRAM */
+#define CONFIG_SPL_BSS_START_ADDR ((256 - 1) << 20)
+#define CONFIG_SPL_BSS_MAX_SIZE (64 << 10)
+
+#define CONFIG_SPL_OS_BOOT
+/* Place patched DT blob (fdt) at this address */
+#define CONFIG_SYS_SPL_ARGS_ADDR 0x01800000
+
+#define CONFIG_SPL_TARGET "u-boot-img-spl-at-end.bin"
+
+/* Settings for real U-Boot to be loaded from NOR flash */
+#define CONFIG_SYS_UBOOT_BASE (-CONFIG_SYS_MONITOR_LEN)
+#define CONFIG_SYS_UBOOT_START 0x01002100
+
+#define CONFIG_SYS_OS_BASE 0xf8000000
+#define CONFIG_SYS_FDT_BASE 0xf87c0000
+#endif
+
#endif /* __CONFIG_H */
--
1.8.1.5
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