powerpc: ppc4xx: Add ramboot config for glacier
Add a new ramboot config for glacier so that it is possible to test U-Boot
loaded over Ethernet instead of using JTAG.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/powerpc/cpu/ppc4xx/44x_spd_ddr2.c b/arch/powerpc/cpu/ppc4xx/44x_spd_ddr2.c
index 71bb9d7..7202c3f 100644
--- a/arch/powerpc/cpu/ppc4xx/44x_spd_ddr2.c
+++ b/arch/powerpc/cpu/ppc4xx/44x_spd_ddr2.c
@@ -424,6 +424,14 @@
int write_recovery;
phys_size_t dram_size = 0;
+ if (IS_ENABLED(CONFIG_SYS_RAMBOOT)) {
+ /*
+ * Reduce RAM size to avoid overwriting memory used by
+ * current stack? Not sure what is happening.
+ */
+ return sdram_memsize() / 2;
+ }
+
num_dimm_banks = sizeof(iic0_dimm_addr);
/*------------------------------------------------------------------
diff --git a/board/amcc/canyonlands/MAINTAINERS b/board/amcc/canyonlands/MAINTAINERS
index 52bf004..8be8a52 100644
--- a/board/amcc/canyonlands/MAINTAINERS
+++ b/board/amcc/canyonlands/MAINTAINERS
@@ -6,3 +6,4 @@
F: configs/arches_defconfig
F: configs/canyonlands_defconfig
F: configs/glacier_defconfig
+F: configs/glacier_ramboot_defconfig
diff --git a/board/amcc/canyonlands/u-boot-ram.lds b/board/amcc/canyonlands/u-boot-ram.lds
new file mode 100644
index 0000000..6765256
--- /dev/null
+++ b/board/amcc/canyonlands/u-boot-ram.lds
@@ -0,0 +1,79 @@
+/*
+ * (C) Copyright 2009
+ * Stefan Roese, DENX Software Engineering, sr@denx.de.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+OUTPUT_ARCH(powerpc)
+SECTIONS
+{
+ /* Read-only sections, merged into text segment: */
+ . = + SIZEOF_HEADERS;
+ .text :
+ {
+ arch/powerpc/cpu/ppc4xx/start.o (.text*)
+ board/amcc/canyonlands/init.o (.text*)
+
+ *(.text*)
+ }
+ _etext = .;
+ PROVIDE (etext = .);
+ .rodata :
+ {
+ *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*)))
+ }
+
+ /* Read-write section, merged into data segment: */
+ . = (. + 0x00FF) & 0xFFFFFF00;
+ _erotext = .;
+ PROVIDE (erotext = .);
+ .reloc :
+ {
+ KEEP(*(.got))
+ _GOT2_TABLE_ = .;
+ KEEP(*(.got2))
+ _FIXUP_TABLE_ = .;
+ KEEP(*(.fixup))
+ }
+ __got2_entries = (_FIXUP_TABLE_ - _GOT2_TABLE_) >>2;
+ __fixup_entries = (. - _FIXUP_TABLE_)>>2;
+
+ .data :
+ {
+ *(.data*)
+ *(.sdata*)
+ }
+ _edata = .;
+ PROVIDE (edata = .);
+
+ . = .;
+
+ .u_boot_list : {
+ KEEP(*(SORT(.u_boot_list*)));
+ }
+
+ . = .;
+ __start___ex_table = .;
+ __ex_table : { *(__ex_table) }
+ __stop___ex_table = .;
+
+ . = ALIGN(256);
+ __init_begin = .;
+ .text.init : { *(.text.init) }
+ .data.init : { *(.data.init) }
+ . = ALIGN(256);
+ __init_end = .;
+
+ __bss_start = .;
+ .bss (NOLOAD) :
+ {
+ *(.bss*)
+ *(.sbss*)
+ *(COMMON)
+ . = ALIGN(4);
+ }
+
+ __bss_end = . ;
+ PROVIDE (end = .);
+}
diff --git a/configs/glacier_ramboot_defconfig b/configs/glacier_ramboot_defconfig
new file mode 100644
index 0000000..4fc2303
--- /dev/null
+++ b/configs/glacier_ramboot_defconfig
@@ -0,0 +1,5 @@
+CONFIG_SYS_EXTRA_OPTIONS="SYS_RAMBOOT,SYS_TEXT_BASE=0x01000000,SYS_LDSCRIPT=board/amcc/canyonlands/u-boot-ram.lds"
+CONFIG_PPC=y
+CONFIG_4xx=y
+CONFIG_TARGET_CANYONLANDS=y
+CONFIG_GLACIER=y