diff options
| author | Bill Gatliff <bgat@billgatliff.com> | 2007-05-31 22:02:22 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2007-07-12 11:13:33 +0100 |
| commit | 9d20fdd58e74d4d26dc5216efaaa0f800c23dd3a (patch) | |
| tree | bc8520791f304ce297a52f575930c2797067521c /arch/arm/kernel/setup.c | |
| parent | 7d09e85448dfa78e3e58186c934449aaf6d49b50 (diff) | |
[ARM] 4423/1: add ATAGS support
Examines the ATAGS pointer (r2) at boot, and interprets
a nonzero value as a reference to an ATAGS structure. A
suitable ATAGS structure replaces the kernel's command line.
Signed-off-by: Bill Gatliff <bgat@billgatliff.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/kernel/setup.c')
| -rw-r--r-- | arch/arm/kernel/setup.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c index 650eac1bc0a..5be2e987b84 100644 --- a/arch/arm/kernel/setup.c +++ b/arch/arm/kernel/setup.c @@ -63,6 +63,8 @@ unsigned int processor_id; unsigned int __machine_arch_type; EXPORT_SYMBOL(__machine_arch_type); +unsigned int __atags_pointer __initdata; + unsigned int system_rev; EXPORT_SYMBOL(system_rev); @@ -780,7 +782,9 @@ void __init setup_arch(char **cmdline_p) if (mdesc->soft_reboot) reboot_setup("s"); - if (mdesc->boot_params) + if (__atags_pointer) + tags = phys_to_virt(__atags_pointer); + else if (mdesc->boot_params) tags = phys_to_virt(mdesc->boot_params); /* |