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-rw-r--r--board/amcc/acadia/u-boot-nand.lds49
-rw-r--r--board/amcc/kilauea/u-boot-nand.lds49
-rw-r--r--board/freescale/p1022ds/diu.c67
3 files changed, 75 insertions, 90 deletions
diff --git a/board/amcc/acadia/u-boot-nand.lds b/board/amcc/acadia/u-boot-nand.lds
index e256b19..c2a04c7 100644
--- a/board/amcc/acadia/u-boot-nand.lds
+++ b/board/amcc/acadia/u-boot-nand.lds
@@ -26,34 +26,12 @@ SECTIONS
{
/* Read-only sections, merged into text segment: */
. = + SIZEOF_HEADERS;
- .interp : { *(.interp) }
- .hash : { *(.hash) }
- .dynsym : { *(.dynsym) }
- .dynstr : { *(.dynstr) }
- .rel.text : { *(.rel.text) }
- .rela.text : { *(.rela.text) }
- .rel.data : { *(.rel.data) }
- .rela.data : { *(.rela.data) }
- .rel.rodata : { *(.rel.rodata) }
- .rela.rodata : { *(.rela.rodata) }
- .rel.got : { *(.rel.got) }
- .rela.got : { *(.rela.got) }
- .rel.ctors : { *(.rel.ctors) }
- .rela.ctors : { *(.rela.ctors) }
- .rel.dtors : { *(.rel.dtors) }
- .rela.dtors : { *(.rela.dtors) }
- .rel.bss : { *(.rel.bss) }
- .rela.bss : { *(.rela.bss) }
- .rel.plt : { *(.rel.plt) }
- .rela.plt : { *(.rela.plt) }
- .init : { *(.init) }
- .plt : { *(.plt) }
.text :
{
/* WARNING - the following is hand-optimized to fit within */
/* the sector layout of our flash chips! XXX FIXME XXX */
- arch/powerpc/cpu/ppc4xx/start.o (.text)
+ arch/powerpc/cpu/ppc4xx/start.o (.text*)
/* Align to next NAND block */
. = ALIGN(0x4000);
@@ -61,8 +39,7 @@ SECTIONS
/* Keep some space here for redundant env and potential bad env blocks */
. = ALIGN(0x10000);
- *(.text)
- *(.got1)
+ *(.text*)
}
_etext = .;
PROVIDE (etext = .);
@@ -70,9 +47,6 @@ SECTIONS
{
*(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*)))
}
- .fini : { *(.fini) } =0
- .ctors : { *(.ctors) }
- .dtors : { *(.dtors) }
/* Read-write section, merged into data segment: */
. = (. + 0x00FF) & 0xFFFFFF00;
@@ -80,23 +54,19 @@ SECTIONS
PROVIDE (erotext = .);
.reloc :
{
- *(.got)
+ KEEP(*(.got))
_GOT2_TABLE_ = .;
- *(.got2)
+ KEEP(*(.got2))
_FIXUP_TABLE_ = .;
- *(.fixup)
+ KEEP(*(.fixup))
}
__got2_entries = (_FIXUP_TABLE_ - _GOT2_TABLE_) >>2;
__fixup_entries = (. - _FIXUP_TABLE_)>>2;
.data :
{
- *(.data)
- *(.data1)
- *(.sdata)
- *(.sdata2)
- *(.dynamic)
- CONSTRUCTORS
+ *(.data*)
+ *(.sdata*)
}
_edata = .;
PROVIDE (edata = .);
@@ -122,9 +92,8 @@ SECTIONS
__bss_start = .;
.bss (NOLOAD) :
{
- *(.sbss) *(.scommon)
- *(.dynbss)
- *(.bss)
+ *(.bss*)
+ *(.sbss*)
*(COMMON)
. = ALIGN(4);
}
diff --git a/board/amcc/kilauea/u-boot-nand.lds b/board/amcc/kilauea/u-boot-nand.lds
index e256b19..c2a04c7 100644
--- a/board/amcc/kilauea/u-boot-nand.lds
+++ b/board/amcc/kilauea/u-boot-nand.lds
@@ -26,34 +26,12 @@ SECTIONS
{
/* Read-only sections, merged into text segment: */
. = + SIZEOF_HEADERS;
- .interp : { *(.interp) }
- .hash : { *(.hash) }
- .dynsym : { *(.dynsym) }
- .dynstr : { *(.dynstr) }
- .rel.text : { *(.rel.text) }
- .rela.text : { *(.rela.text) }
- .rel.data : { *(.rel.data) }
- .rela.data : { *(.rela.data) }
- .rel.rodata : { *(.rel.rodata) }
- .rela.rodata : { *(.rela.rodata) }
- .rel.got : { *(.rel.got) }
- .rela.got : { *(.rela.got) }
- .rel.ctors : { *(.rel.ctors) }
- .rela.ctors : { *(.rela.ctors) }
- .rel.dtors : { *(.rel.dtors) }
- .rela.dtors : { *(.rela.dtors) }
- .rel.bss : { *(.rel.bss) }
- .rela.bss : { *(.rela.bss) }
- .rel.plt : { *(.rel.plt) }
- .rela.plt : { *(.rela.plt) }
- .init : { *(.init) }
- .plt : { *(.plt) }
.text :
{
/* WARNING - the following is hand-optimized to fit within */
/* the sector layout of our flash chips! XXX FIXME XXX */
- arch/powerpc/cpu/ppc4xx/start.o (.text)
+ arch/powerpc/cpu/ppc4xx/start.o (.text*)
/* Align to next NAND block */
. = ALIGN(0x4000);
@@ -61,8 +39,7 @@ SECTIONS
/* Keep some space here for redundant env and potential bad env blocks */
. = ALIGN(0x10000);
- *(.text)
- *(.got1)
+ *(.text*)
}
_etext = .;
PROVIDE (etext = .);
@@ -70,9 +47,6 @@ SECTIONS
{
*(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*)))
}
- .fini : { *(.fini) } =0
- .ctors : { *(.ctors) }
- .dtors : { *(.dtors) }
/* Read-write section, merged into data segment: */
. = (. + 0x00FF) & 0xFFFFFF00;
@@ -80,23 +54,19 @@ SECTIONS
PROVIDE (erotext = .);
.reloc :
{
- *(.got)
+ KEEP(*(.got))
_GOT2_TABLE_ = .;
- *(.got2)
+ KEEP(*(.got2))
_FIXUP_TABLE_ = .;
- *(.fixup)
+ KEEP(*(.fixup))
}
__got2_entries = (_FIXUP_TABLE_ - _GOT2_TABLE_) >>2;
__fixup_entries = (. - _FIXUP_TABLE_)>>2;
.data :
{
- *(.data)
- *(.data1)
- *(.sdata)
- *(.sdata2)
- *(.dynamic)
- CONSTRUCTORS
+ *(.data*)
+ *(.sdata*)
}
_edata = .;
PROVIDE (edata = .);
@@ -122,9 +92,8 @@ SECTIONS
__bss_start = .;
.bss (NOLOAD) :
{
- *(.sbss) *(.scommon)
- *(.dynbss)
- *(.bss)
+ *(.bss*)
+ *(.sbss*)
*(COMMON)
. = ALIGN(4);
}
diff --git a/board/freescale/p1022ds/diu.c b/board/freescale/p1022ds/diu.c
index 12b40a0..8f5305c 100644
--- a/board/freescale/p1022ds/diu.c
+++ b/board/freescale/p1022ds/diu.c
@@ -32,6 +32,7 @@
#define PMUXCR_ELBCDIU_MASK 0xc0000000
#define PMUXCR_ELBCDIU_NOR16 0x80000000
+#define PMUXCR_ELBCDIU_DIU 0x40000000
/*
* DIU Area Descriptor
@@ -131,9 +132,8 @@ int platform_diu_init(unsigned int *xres, unsigned int *yres)
px_brdcfg0 = in_8(lbc_lcs1_ba);
out_8(lbc_lcs1_ba, px_brdcfg0 | PX_BRDCFG0_ELBC_DIU);
- /* Setting PMUXCR to switch to DVI from ELBC */
- clrsetbits_be32(&gur->pmuxcr,
- PMUXCR_ELBCDIU_MASK, PMUXCR_ELBCDIU_NOR16);
+ /* Set PMUXCR to switch the muxed pins from the LBC to the DIU */
+ clrsetbits_be32(&gur->pmuxcr, PMUXCR_ELBCDIU_MASK, PMUXCR_ELBCDIU_DIU);
pmuxcr = in_be32(&gur->pmuxcr);
return fsl_diu_init(*xres, pixel_format, 0);
@@ -161,7 +161,7 @@ static int set_mux_to_lbc(void)
ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
/* Switch the muxes only if they're currently set to DIU mode */
- if ((in_be32(&gur->pmuxcr) & PMUXCR_ELBCDIU_MASK) ==
+ if ((in_be32(&gur->pmuxcr) & PMUXCR_ELBCDIU_MASK) !=
PMUXCR_ELBCDIU_NOR16) {
/*
* In DIU mode, the PIXIS can only be accessed indirectly
@@ -216,8 +216,17 @@ void flash_write8(u8 value, void *addr)
int sw = set_mux_to_lbc();
__raw_writeb(value, addr);
- if (sw)
+ if (sw) {
+ /*
+ * To ensure the post-write is completed to eLBC, software must
+ * perform a dummy read from one valid address from eLBC space
+ * before changing the eLBC_DIU from NOR mode to DIU mode.
+ * set_mux_to_diu() includes a sync that will ensure the
+ * __raw_readb() completes before it switches the mux.
+ */
+ __raw_readb(addr);
set_mux_to_diu();
+ }
}
void flash_write16(u16 value, void *addr)
@@ -225,8 +234,17 @@ void flash_write16(u16 value, void *addr)
int sw = set_mux_to_lbc();
__raw_writew(value, addr);
- if (sw)
+ if (sw) {
+ /*
+ * To ensure the post-write is completed to eLBC, software must
+ * perform a dummy read from one valid address from eLBC space
+ * before changing the eLBC_DIU from NOR mode to DIU mode.
+ * set_mux_to_diu() includes a sync that will ensure the
+ * __raw_readb() completes before it switches the mux.
+ */
+ __raw_readb(addr);
set_mux_to_diu();
+ }
}
void flash_write32(u32 value, void *addr)
@@ -234,18 +252,47 @@ void flash_write32(u32 value, void *addr)
int sw = set_mux_to_lbc();
__raw_writel(value, addr);
- if (sw)
+ if (sw) {
+ /*
+ * To ensure the post-write is completed to eLBC, software must
+ * perform a dummy read from one valid address from eLBC space
+ * before changing the eLBC_DIU from NOR mode to DIU mode.
+ * set_mux_to_diu() includes a sync that will ensure the
+ * __raw_readb() completes before it switches the mux.
+ */
+ __raw_readb(addr);
set_mux_to_diu();
+ }
}
void flash_write64(u64 value, void *addr)
{
int sw = set_mux_to_lbc();
+ uint32_t *p = addr;
- /* There is no __raw_writeq(), so do the write manually */
- *(volatile u64 *)addr = value;
- if (sw)
+ /*
+ * There is no __raw_writeq(), so do the write manually. We don't trust
+ * the compiler, so we use inline assembly.
+ */
+ __asm__ __volatile__(
+ "stw%U0%X0 %2,%0;\n"
+ "stw%U1%X1 %3,%1;\n"
+ : "=m" (*p), "=m" (*(p + 1))
+ : "r" ((uint32_t) (value >> 32)), "r" ((uint32_t) (value)));
+
+ if (sw) {
+ /*
+ * To ensure the post-write is completed to eLBC, software must
+ * perform a dummy read from one valid address from eLBC space
+ * before changing the eLBC_DIU from NOR mode to DIU mode. We
+ * read addr+4 because we just wrote to addr+4, so that's how we
+ * maintain execution order. set_mux_to_diu() includes a sync
+ * that will ensure the __raw_readb() completes before it
+ * switches the mux.
+ */
+ __raw_readb(addr + 4);
set_mux_to_diu();
+ }
}
u8 flash_read8(void *addr)
generated by cgit v1.1 at 2024-12-14 15:31:56 +0000