e8222502ee
This removes statically assigned platform numbers and reworks the powerpc platform probe code to use a better mechanism. With this, board support files can simply declare a new machine type with a macro, and implement a probe() function that uses the flattened device-tree to detect if they apply for a given machine. We now have a machine_is() macro that replaces the comparisons of _machine with the various PLATFORM_* constants. This commit also changes various drivers to use the new macro instead of looking at _machine. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
239 lines
3.5 KiB
ArmAsm
239 lines
3.5 KiB
ArmAsm
#include <linux/config.h>
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#ifdef CONFIG_PPC64
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#include <asm/page.h>
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#define PROVIDE32(x) PROVIDE(__unused__##x)
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#else
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#define PAGE_SIZE 4096
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#define KERNELBASE CONFIG_KERNEL_START
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#define PROVIDE32(x) PROVIDE(x)
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#endif
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#include <asm-generic/vmlinux.lds.h>
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ENTRY(_stext)
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#ifdef CONFIG_PPC64
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OUTPUT_ARCH(powerpc:common64)
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jiffies = jiffies_64;
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#else
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OUTPUT_ARCH(powerpc:common)
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jiffies = jiffies_64 + 4;
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#endif
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SECTIONS
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{
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/* Sections to be discarded. */
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/DISCARD/ : {
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*(.exitcall.exit)
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*(.exit.data)
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}
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. = KERNELBASE;
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/*
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* Text, read only data and other permanent read-only sections
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*/
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/* Text and gots */
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.text : {
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*(.text .text.*)
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SCHED_TEXT
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LOCK_TEXT
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KPROBES_TEXT
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*(.fixup)
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#ifdef CONFIG_PPC32
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*(.got1)
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__got2_start = .;
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*(.got2)
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__got2_end = .;
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#endif /* CONFIG_PPC32 */
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. = ALIGN(PAGE_SIZE);
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_etext = .;
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PROVIDE32 (etext = .);
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}
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/* Read-only data */
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RODATA
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/* Exception & bug tables */
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__ex_table : {
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__start___ex_table = .;
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*(__ex_table)
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__stop___ex_table = .;
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}
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__bug_table : {
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__start___bug_table = .;
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*(__bug_table)
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__stop___bug_table = .;
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}
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/*
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* Init sections discarded at runtime
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*/
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. = ALIGN(PAGE_SIZE);
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__init_begin = .;
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.init.text : {
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_sinittext = .;
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*(.init.text)
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_einittext = .;
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}
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/* .exit.text is discarded at runtime, not link time,
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* to deal with references from __bug_table
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*/
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.exit.text : { *(.exit.text) }
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.init.data : {
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*(.init.data);
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__vtop_table_begin = .;
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*(.vtop_fixup);
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__vtop_table_end = .;
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__ptov_table_begin = .;
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*(.ptov_fixup);
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__ptov_table_end = .;
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}
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. = ALIGN(16);
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.init.setup : {
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__setup_start = .;
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*(.init.setup)
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__setup_end = .;
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}
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.initcall.init : {
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__initcall_start = .;
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*(.initcall1.init)
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*(.initcall2.init)
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*(.initcall3.init)
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*(.initcall4.init)
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*(.initcall5.init)
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*(.initcall6.init)
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*(.initcall7.init)
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__initcall_end = .;
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}
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.con_initcall.init : {
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__con_initcall_start = .;
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*(.con_initcall.init)
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__con_initcall_end = .;
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}
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SECURITY_INIT
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. = ALIGN(8);
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__ftr_fixup : {
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__start___ftr_fixup = .;
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*(__ftr_fixup)
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__stop___ftr_fixup = .;
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}
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. = ALIGN(PAGE_SIZE);
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.init.ramfs : {
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__initramfs_start = .;
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*(.init.ramfs)
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__initramfs_end = .;
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}
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#ifdef CONFIG_PPC32
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. = ALIGN(32);
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#else
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. = ALIGN(128);
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#endif
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.data.percpu : {
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__per_cpu_start = .;
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*(.data.percpu)
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__per_cpu_end = .;
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}
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. = ALIGN(8);
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.machine.desc : {
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__machine_desc_start = . ;
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*(.machine.desc)
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__machine_desc_end = . ;
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}
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/* freed after init ends here */
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. = ALIGN(PAGE_SIZE);
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__init_end = .;
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/*
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* And now the various read/write data
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*/
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. = ALIGN(PAGE_SIZE);
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_sdata = .;
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#ifdef CONFIG_PPC32
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.data :
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{
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*(.data)
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*(.sdata)
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*(.got.plt) *(.got)
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}
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#else
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.data : {
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*(.data .data.rel* .toc1)
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*(.branch_lt)
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}
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.opd : {
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*(.opd)
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}
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.got : {
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__toc_start = .;
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*(.got)
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*(.toc)
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}
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#endif
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. = ALIGN(PAGE_SIZE);
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_edata = .;
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PROVIDE32 (edata = .);
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/* The initial task and kernel stack */
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#ifdef CONFIG_PPC32
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. = ALIGN(8192);
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#else
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. = ALIGN(16384);
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#endif
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.data.init_task : {
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*(.data.init_task)
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}
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. = ALIGN(PAGE_SIZE);
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.data.page_aligned : {
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*(.data.page_aligned)
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}
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.data.cacheline_aligned : {
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*(.data.cacheline_aligned)
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}
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. = ALIGN(PAGE_SIZE);
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__data_nosave : {
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__nosave_begin = .;
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*(.data.nosave)
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. = ALIGN(PAGE_SIZE);
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__nosave_end = .;
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}
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/*
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* And finally the bss
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*/
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.bss : {
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__bss_start = .;
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*(.sbss) *(.scommon)
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*(.dynbss)
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*(.bss)
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*(COMMON)
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__bss_stop = .;
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}
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. = ALIGN(PAGE_SIZE);
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_end = . ;
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PROVIDE32 (end = .);
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}
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