Add qemu 2.4.0

Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>

1 files changed, 269 insertions, 0 deletions

diff --git a/qemu/roms/u-boot/board/sbc8548/README b/qemu/roms/u-boot/board/sbc8548/README
new file mode 100644
index 000000000..feac5e3e6
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+Intro:
+======
+
+The SBC8548 is a stand alone single board computer with a 1GHz
+MPC8548 CPU, 8MB boot flash, 64MB user flash and, 256MB DDR2 400MHz
+memory. It also has 128MB SDRAM 100MHz LBC memory, with both a PCI-e,
+and a PCI-X slot, dual mini-DB9 for UART, and dual RJ-45 for eTSEC
+ethernet connections.
+
+U-boot Configuration:
+=====================
+
+The following possible u-boot configuration targets are available:
+
+	1) sbc8548_config
+	2) sbc8548_PCI_33_config
+	3) sbc8548_PCI_66_config
+	4) sbc8548_PCI_33_PCIE_config
+	5) sbc8548_PCI_66_PCIE_config
+
+Generally speaking, most people should choose to use #5.  Details
+of each choice are listed below.
+
+Choice #1 does not enable CONFIG_PCI, and assumes that the PCI slot
+will be left empty (M66EN high), and so the board will operate with
+a base clock of 66MHz.	Note that you need both PCI enabled in u-boot
+and linux in order to have functional PCI under linux.
+
+The second enables PCI support and builds for a 33MHz clock rate.  Note
+that if a 33MHz 32bit card is inserted in the slot, then the whole board
+will clock down to a 33MHz base clock instead of the default 66MHz.  This
+will change the baud clocks and mess up your serial console output if you
+were previously running at 66MHz.  If you want to use a 33MHz PCI card,
+then you should build a U-Boot with a _PCI_33_ config and store this
+to flash prior to powering down the board and inserting the 33MHz PCI
+card. [The above discussion assumes that the SW2[1-4] has not been changed
+to reflect a different CCB:SYSCLK ratio]
+
+The third option builds PCI support in, and leaves the clocking at the
+default 66MHz.	Options four and five are just repeats of option two
+and three, but with PCI-e support enabled as well.
+
+PCI output listing with an intel e1000 PCI-x and a Syskonnect SK-9Exx
+is shown below for sbc8548_PCI_66_PCIE_config.	(Note that PCI-e with
+a 33MHz PCI configuration is currently untested.)
+
+    => pci 0
+    Scanning PCI devices on bus 0
+    BusDevFun  VendorId	  DeviceId   Device Class	Sub-Class
+    _____________________________________________________________
+    00.00.00   0x1057	  0x0012     Processor		     0x20
+    00.01.00   0x8086	  0x1026     Network controller	     0x00
+    => pci 1
+    Scanning PCI devices on bus 1
+    BusDevFun  VendorId	  DeviceId   Device Class	Sub-Class
+    _____________________________________________________________
+    01.00.00   0x1957	  0x0012     Processor		     0x20
+    => pci 2
+    Scanning PCI devices on bus 2
+    BusDevFun  VendorId	  DeviceId   Device Class	Sub-Class
+    _____________________________________________________________
+    02.00.00   0x1148	  0x9e00     Network controller	     0x00
+    =>
+
+Memory Size and using SPD:
+==========================
+
+The default configuration uses hard coded memory configuration settings
+for 256MB of DDR2 @400MHz.  It does not by default use the DDR2 SPD
+EEPROM data to read what memory is installed.
+
+There is a hardware errata, which causes the older local bus SDRAM
+SPD EEPROM to land at the same address as the DDR2 SPD EEPROM, so
+that the SPD data can not be read reliably.  You can test if your
+board has the errata fix by running "i2c probe".  If you see 0x53
+as a valid device, it has been fixed.  If you only see 0x50, 0x51
+then your board does not have the fix.
+
+You can also visually inspect the board to see if this hardware
+fix has been applied:
+
+      1) Remove R314 (RES-R0174-033, 1K, 0603). R314 is located on
+	 the back of the PCB behind the DDR SDRAM SODIMM connector.
+      2) Solder RES-R0174-033 (1K, 0603) resistor from R314 pin 2 pad
+	 to R313 pin 2.	 Pin 2 for each resistor is the end of the
+	 resistor closest to the CPU.
+
+Boards without the mod will have R314 and R313 in parallel, like "||".
+After the mod, they will be touching and form an "L" shape.
+
+If you want to upgrade to larger RAM size, you can simply enable
+	#define CONFIG_SPD_EEPROM
+	#define CONFIG_DDR_SPD
+in include/configs/sbc8548.h file.  (The lines are already there
+but listed as #undef).
+
+If you did the i2c test, and your board does not have the errata
+fix, then you will have to physically remove the LBC 128MB DIMM
+from the board's socket to resolve the above i2c address overlap
+issue and allow SPD autodetection of RAM to work.
+
+
+Updating U-boot with U-boot:
+============================
+
+Note that versions of u-boot up to and including 2009.08 had u-boot stored
+at 0xfff8_0000 -> 0xffff_ffff (512k).  Currently it is being stored from
+0xfffa_0000 -> 0xffff_ffff (384k).  If you use an old macro/script to
+update u-boot with u-boot and it uses the old address, you will render
+your board inoperable, and you will require JTAG recovery.
+
+The following steps list how to update with the current address:
+
+	tftp u-boot.bin
+	md 200000 10
+	protect off all
+	erase fffa0000 ffffffff
+	cp.b 200000 fffa0000 60000
+	md fffa0000 10
+	protect on all
+
+The "md" steps in the above are just a precautionary step that allow
+you to confirm the u-boot version that was downloaded, and then confirm
+that it was copied to flash.
+
+The above assumes that you are using the default board settings which
+have u-boot in the 8MB flash, tied to /CS0.
+
+If you are running the default 8MB /CS0 settings but want to store an
+image in the SODIMM that is built with CONFIG_SYS_ALT_BOOT enabled,
+(as a backup, etc) then the steps will become:
+
+	tftp u-boot.bin
+	md 200000 10
+	protect off all
+	era eff00000 efffffff
+	cp.b 200000 eff00000 100000
+	md eff00000 10
+	protect on all
+
+Finally, if you are running the alternate 64MB /CS0 settings and want
+to update the in-use u-boot image, then (again with CONFIG_SYS_ALT_BOOT
+enabled) the steps will become:
+
+	tftp u-boot.bin
+	md 200000 10
+	protect off all
+	era fff00000 ffffffff
+	cp.b 200000 fff00000 100000
+	md fff00000 10
+	protect on all
+
+
+Hardware Reference:
+===================
+
+The following contains some summary information on hardware settings
+that are relevant to u-boot, based on the board manual.	 For the
+most up to date and complete details of the board, please request the
+reference manual ERG-00327-001.pdf from www.windriver.com
+
+Boot flash:
+	intel V28F640Jx, 8192x8 (one device) at 0xff80_0000
+
+Sodimm flash:
+	intel V28F128Jx, 16384x8 (4 devices) at 0xfb80_0000
+	Note that this address reflects the default setting for
+	the JTAG debugging tools, but since the alignment is
+	rather inconvenient, u-boot puts it at 0xec00_0000.
+
+
+	Jumpers:
+
+Jumper		Name		ON		OFF
+----------------------------------------------------------------
+JP12		CS0/CS6 swap	see note[*]	see note[*]
+
+JP13		SODIMM flash	write OK	writes disabled
+		write prot.
+
+JP14		HRESET/TRST	joined		isolated
+
+JP15		PWR ON		when AC pwr	use S1 for on/off
+
+JP16		Demo LEDs	lit		not lit
+
+JP19		PCI mode	PCI		PCI-X
+
+
+[*]JP12, when jumpered parallel to the SODIMM, puts the boot flash
+onto /CS0 and the SODIMM flash on /CS6 (default).  When JP12
+is jumpered parallel to the LBC-SDRAM, then /CS0 is for the
+SODIMM flash and /CS6 is for the boot flash.  Note that in this
+alternate setting, you also need to switch SW2.8 to ON.
+See the setting CONFIG_SYS_ALT_BOOT if you want to use this setting
+and boot u-boot from the 64MB SODIMM
+
+
+	Switches:
+
+The defaults are marked with a *
+
+Name		Desc.			ON		OFF
+------------------------------------------------------------------
+S1		Pwr toggle		n/a		n/a
+
+SW2.1		CFG_SYS_PLL0		1		0*
+SW2.2		CFG_SYS_PLL1		1*		0
+SW2.3		CFG_SYS_PLL2		1*		0
+SW2.4		CFG_SYS_PLL3		1		0*
+SW2.5		CFG_CORE_PLL0		1*		0
+SW2.6		CFG_CORE_PLL1		1		0*
+SW2.7		CFG_CORE_PLL2		1*		0
+SW2.8		CFG_ROM_LOC1		1		0*
+
+SW3.1		CFG_HOST_AGT0		1*		0
+SW3.2		CFG_HOST_AGT1		1*		0
+SW3.3		CFG_HOST_AGT2		1*		0
+SW3.4		CFG_IO_PORTS0		1*		0
+SW3.5		CFG_IO_PORTS0		1		0*
+SW3.6		CFG_IO_PORTS0		1		0*
+
+SerDes CLK(MHz)		SW5.1		SW5.2
+----------------------------------------------
+25			0		0
+100*			1		0
+125			0		1
+200			1		1
+
+SerDes CLK spread	SW5.3		SW5.4
+----------------------------------------------
++/- 0.25%		0		0
+-0.50%			1		0
+-0.75%			0		1
+No Spread*		1		1
+
+SW4 settings are readable from the EPLD and are currently not used for
+any hardware settings (i.e. user configuration switches).
+
+	LEDs:
+
+Name		Desc.			ON		OFF
+------------------------------------------------------------------
+D13		PCI/PCI-X		PCI-X		PCI
+D14		3.3V PWR		3.3V		no power
+D15		SYSCLK			66MHz		33MHz
+
+
+	Default Memory Map:
+
+start		end		CS<n>	width	Desc.
+----------------------------------------------------------------------
+0000_0000	0fff_ffff	MCS0,1	64	DDR2 (256MB)
+f000_0000	f7ff_ffff	CS3,4	32	LB SDRAM (128MB)
+f800_0000	f8b0_1fff	CS5	-	EPLD
+fb80_0000	ff7f_ffff	CS6	32	SODIMM flash (64MB) [*]
+ff80_0000	ffff_ffff	CS0	8	Boot flash (8MB)
+
+[*] fb80 represents the default programmed by WR JTAG register files,
+    but u-boot places the flash at either ec00 or fc00 based on JP12.
+
+The EPLD on CS5 demuxes the following devices at the following offsets:
+
+offset		size	width	device
+--------------------------------------------------------
+0		1fff	8	7 segment display LED
+10_0000		1fff	4	user switches
+30_0000		1fff	4	HW Rev. register
+b0_0000		1fff	8	8kB EEPROM