powerpc: Partialy restore core of mpc8xx

CS Systemes d'Information (CSSI) manufactures 8xx boards for
critical communication systems. Those boards have been
running U-Boot since 2010 and will have to be maintained
until at least 2027.

commit 5b8e76c35ec312a3f73126bd1a2d2c0965b98a9f
("powerpc, 8xx: remove support for 8xx") orphaned those boards
by removing support for the mpc8xx CPU.

This commit partially restores support for the 8xx, with the
following limitations:
- Restores support for MPC866 and MPC885 only
- Does not restore IDE, PCMCIA, I2C, USB
- Does not restore examples
- Does not restore POST
- Does not restore Ethernet on SCC
- Does not restore console on SCC
- Does not restore bedbug and kgdb support

As the 866 and 885 do not support the following features,
they are not restored either:
- VIDEO / LCD
- RTC clock

The CPM uCODE patch is not restored either, because:
- 866 and 885 already have support for I2C and SPI relocation
without a uCODE patch
- relocation of SMC, I2C or SPI is only needed for using SCCs
for Ethernet or QMC

The dynamic setup/calculation of clocks is removed, we
expect the target being use with the clock and PLPRCR register
defined in the configuration.
All the clock settings for 8xx prior to 866 is removed as
well as we now only support 866 and 885.

This code is mature and addresses mature boards. Therefore
all code enclosed in '#if 0/#endif' and '#if XX_DEBUG/#endif'
is unneeded.

The following files are not restored by this patch:

- arch/powerpc/cpu/mpc8xx/bedbug_860.c
- arch/powerpc/cpu/mpc8xx/fec.h
- arch/powerpc/cpu/mpc8xx/kgdb.S
- arch/powerpc/cpu/mpc8xx/plprcr_write.S
- arch/powerpc/cpu/mpc8xx/scc.c
- arch/powerpc/cpu/mpc8xx/upatch.c
- arch/powerpc/cpu/mpc8xx/video.c
- arch/powerpc/include/asm/status_led.h
- arch/powerpc/lib/ide.c
- arch/powerpc/lib/ide.h
- doc/README.MPC866
- drivers/pcmcia/mpc8xx_pcmcia.c
- drivers/rtc/mpc8xx.c
- drivers/usb/gadget/mpc8xx_udc.c
- drivers/video/mpc8xx_lcd.c
- examples/standalone/test_burst.c
- examples/standalone/test_burst.h
- examples/standalone/test_burst_lib.S
- examples/standalone/timer.c
- include/mpc823_lcd.h
- include/usb/mpc8xx_udc.h
- post/cpu/mpc8xx/Makefile
- post/cpu/mpc8xx/cache.c
- post/cpu/mpc8xx/cache_8xx.S
- post/cpu/mpc8xx/ether.c
- post/cpu/mpc8xx/spr.c
- post/cpu/mpc8xx/uart.c
- post/cpu/mpc8xx/usb.c
- post/cpu/mpc8xx/watchdog.c

Some of the restored files are not located in a proper location.
In order to keep traceability of the changes, they will be
moved to their correct location and moved to Kconfig in a
followup patch.

This patch also declares CSSI as point of contact for the update
of the 8xx platform, as those boards are the only ones still
being maintained on the 8xx area. A later patch will add
those boards to the tree.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>

1 files changed, 22 insertions, 0 deletions

diff --git a/scripts/config_whitelist.txt b/scripts/config_whitelist.txt
index 54eee53572e..8a4d3f8fe03 100644
--- a/scripts/config_whitelist.txt
+++ b/scripts/config_whitelist.txt
@@ -12,6 +12,10 @@ CONFIG_83XX_GENERIC_PCIE_REGISTER_HOSES
 CONFIG_83XX_PCICLK
 CONFIG_83XX_PCI_STREAMING
 CONFIG_88F5182
+CONFIG_8xx_CONS_NONE
+CONFIG_8xx_CONS_SMC1
+CONFIG_8xx_CONS_SMC2
+CONFIG_8xx_GCLK_FREQ
 CONFIG_A003399_NOR_WORKAROUND
 CONFIG_A008044_WORKAROUND
 CONFIG_ACX517AKN
@@ -701,6 +705,8 @@ CONFIG_ETHER_ON_FCC
 CONFIG_ETHER_ON_FCC1
 CONFIG_ETHER_ON_FCC2
 CONFIG_ETHER_ON_FCC3
+CONFIG_ETHER_ON_FEC1
+CONFIG_ETHER_ON_FEC2
 CONFIG_ETHPRIME
 CONFIG_ETH_BUFSIZE
 CONFIG_ETH_RXSIZE
@@ -756,6 +762,8 @@ CONFIG_FEATURE_SH_APPLETS_ALWAYS_WIN
 CONFIG_FEATURE_SH_EXTRA_QUIET
 CONFIG_FEATURE_SH_FANCY_PROMPT
 CONFIG_FEATURE_SH_STANDALONE_SHELL
+CONFIG_FEC1_PHY
+CONFIG_FEC2_PHY
 CONFIG_FEC_ENET_DEV
 CONFIG_FEC_FIXED_SPEED
 CONFIG_FEC_MXC_25M_REF_CLK
@@ -1525,6 +1533,10 @@ CONFIG_MPC83XX_PCI2
 CONFIG_MPC85XX_FEC
 CONFIG_MPC85XX_FEC_NAME
 CONFIG_MPC85XX_PCI2
+CONFIG_MPC866
+CONFIG_MPC866_FAMILY
+CONFIG_MPC885
+CONFIG_MPC885_FAMILY
 CONFIG_MPC8XXX_SPI
 CONFIG_MPC8xxx_DISABLE_BPTR
 CONFIG_MPLL_FREQ
@@ -2503,6 +2515,7 @@ CONFIG_SYS_BR6_64M
 CONFIG_SYS_BR6_8M
 CONFIG_SYS_BR6_PRELIM
 CONFIG_SYS_BR7_PRELIM
+CONFIG_SYS_BRGCLK_PRESCALE
 CONFIG_SYS_BUSCLK
 CONFIG_SYS_CACHELINE_SHIFT
 CONFIG_SYS_CACHE_ACR0
@@ -2904,6 +2917,7 @@ CONFIG_SYS_DEBUG_SERVER_FW_IN_NOR
 CONFIG_SYS_DEFAULT_LPDDR2_TIMINGS
 CONFIG_SYS_DEFAULT_VIDEO_MODE
 CONFIG_SYS_DEF_EEPROM_ADDR
+CONFIG_SYS_DER
 CONFIG_SYS_DEVICE_NULLDEV
 CONFIG_SYS_DFU_DATA_BUF_SIZE
 CONFIG_SYS_DFU_MAX_FILE_SIZE
@@ -4469,6 +4483,7 @@ CONFIG_SYS_PIOC_PPUDR_VAL
 CONFIG_SYS_PIOD_PDR_VAL1
 CONFIG_SYS_PIOD_PPUDR_VAL
 CONFIG_SYS_PIO_MODE
+CONFIG_SYS_PISCR
 CONFIG_SYS_PIT_BASE
 CONFIG_SYS_PIT_PRESCALE
 CONFIG_SYS_PIXIS_VBOOT_ENABLE
@@ -4486,6 +4501,7 @@ CONFIG_SYS_PLL_BYPASS
 CONFIG_SYS_PLL_FDR
 CONFIG_SYS_PLL_ODR
 CONFIG_SYS_PLL_SETTLING_TIME
+CONFIG_SYS_PLPRCR
 CONFIG_SYS_PLUG_BASE
 CONFIG_SYS_PMAN
 CONFIG_SYS_PMC_BASE
@@ -4641,6 +4657,7 @@ CONFIG_SYS_SDIO_BASE0
 CONFIG_SYS_SDIO_BASE1
 CONFIG_SYS_SDIO_BASE2
 CONFIG_SYS_SDIO_BASE3
+CONFIG_SYS_SDMR
 CONFIG_SYS_SDRAM
 CONFIG_SYS_SDRAM1
 CONFIG_SYS_SDRAM_BASE
@@ -4686,6 +4703,7 @@ CONFIG_SYS_SDRC_MR_VAL5
 CONFIG_SYS_SDRC_TR_VAL
 CONFIG_SYS_SDRC_TR_VAL1
 CONFIG_SYS_SDRC_TR_VAL2
+CONFIG_SYS_SDSR
 CONFIG_SYS_SD_VOLTAGE
 CONFIG_SYS_SEC_MON_ADDR
 CONFIG_SYS_SEC_MON_OFFSET
@@ -4712,12 +4730,14 @@ CONFIG_SYS_SH_SDHI_NR_CHANNEL
 CONFIG_SYS_SICRH
 CONFIG_SYS_SICRL
 CONFIG_SYS_SIL1178_I2C
+CONFIG_SYS_SIUMCR
 CONFIG_SYS_SJA1000_BASE
 CONFIG_SYS_SMC0_CYCLE0_VAL
 CONFIG_SYS_SMC0_MODE0_VAL
 CONFIG_SYS_SMC0_PULSE0_VAL
 CONFIG_SYS_SMC0_SETUP0_VAL
 CONFIG_SYS_SMC_CSR0_VAL
+CONFIG_SYS_SMC_RXBUFLEN
 CONFIG_SYS_SMI_BASE
 CONFIG_SYS_SPANSION_BASE
 CONFIG_SYS_SPANSION_BOOT
@@ -4782,9 +4802,11 @@ CONFIG_SYS_STATUS_OK
 CONFIG_SYS_STMICRO_BOOT
 CONFIG_SYS_SUPPORT_64BIT_DATA
 CONFIG_SYS_SXCNFG_VAL
+CONFIG_SYS_SYPCR
 CONFIG_SYS_SYSTEMACE_BASE
 CONFIG_SYS_SYSTEMACE_WIDTH
 CONFIG_SYS_TBIPA_VALUE
+CONFIG_SYS_TBSCR
 CONFIG_SYS_TCLK
 CONFIG_SYS_TEXT_ADDR
 CONFIG_SYS_TEXT_BASE_NOR