[PATCH 2/2] efi/arm: Fix the format of debug message from efi

From: Matt Fleming
Date: Tue May 31 2016 - 06:24:01 EST


From: Dennis Chen <dennis.chen@xxxxxxx>

When enable debug of efi and memblock with 'efi=debug memblock=debug' appended
to the kernel command line, the debug message output for earyly_con looks like:

[ 0.000000] efi: 0x0000e1050000-0x0000e105ffff [Memory Mapped I/O |RUN| | | | | | | | | | |UC]
[ 0.000000] efi: 0x0000e1300000-0x0000e1300fff [Memory Mapped I/O |RUN| | | | | | | | | | |UC]
[ 0.000000] efi: 0x0000e8200000-0x0000e827ffff [Memory Mapped I/O |RUN| | | | | | | | | | |UC]
[ 0.000000] efi: 0x008000000000-0x008001e7ffff [Runtime Data |RUN| | | | | | | |WB|WT|WC|UC]
[ 0.000000] memblock_add: [0x00008000000000-0x00008001e7ffff] flags 0x0 early_init_dt_add_memory_arch+0x54/0x5c
[ 0.000000] *
...

This patch is trying to fix the above output messed up by memblock_add(),
so we can get below debug mesg looks more formally after applied:

[ 0.000000] efi: 0x0000e1050000-0x0000e105ffff [Memory Mapped I/O |RUN| | | | | | | | | | |UC]
[ 0.000000] efi: 0x0000e1300000-0x0000e1300fff [Memory Mapped I/O |RUN| | | | | | | | | | |UC]
[ 0.000000] efi: 0x0000e8200000-0x0000e827ffff [Memory Mapped I/O |RUN| | | | | | | | | | |UC]
[ 0.000000] efi: 0x008000000000-0x008001e7ffff [Runtime Data |RUN| | | | | | | |WB|WT|WC|UC]*
[ 0.000000] memblock_add: [0x00008000000000-0x00008001e7ffff] flags 0x0 early_init_dt_add_memory_arch+0x54/0x5c
...

Signed-off-by: Dennis Chen <dennis.chen@xxxxxxx>
Acked-by: Mark Rutland <mark.rutland@xxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Steve Capper <steve.capper@xxxxxxx>
Cc: Will Deacon <will.deacon@xxxxxxx>
Cc: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx>
Cc: linux-efi@xxxxxxxxxxxxxxx
Cc: Steve McIntyre <steve@xxxxxxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: Dan Williams <dan.j.williams@xxxxxxxxx>
Cc: Mark Salter <msalter@xxxxxxxxxx>
Signed-off-by: Matt Fleming <matt@xxxxxxxxxxxxxxxxxxx>
---
drivers/firmware/efi/arm-init.c | 14 ++++++--------
1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/drivers/firmware/efi/arm-init.c b/drivers/firmware/efi/arm-init.c
index a850cbc48d8d..c49d50e68aee 100644
--- a/drivers/firmware/efi/arm-init.c
+++ b/drivers/firmware/efi/arm-init.c
@@ -174,6 +174,7 @@ static __init void reserve_regions(void)
{
efi_memory_desc_t *md;
u64 paddr, npages, size;
+ int resv;

if (efi_enabled(EFI_DBG))
pr_info("Processing EFI memory map:\n");
@@ -190,12 +191,14 @@ static __init void reserve_regions(void)
paddr = md->phys_addr;
npages = md->num_pages;

+ resv = is_reserve_region(md);
if (efi_enabled(EFI_DBG)) {
char buf[64];

- pr_info(" 0x%012llx-0x%012llx %s",
+ pr_info(" 0x%012llx-0x%012llx %s%s\n",
paddr, paddr + (npages << EFI_PAGE_SHIFT) - 1,
- efi_md_typeattr_format(buf, sizeof(buf), md));
+ efi_md_typeattr_format(buf, sizeof(buf), md),
+ resv ? "*" : "");
}

memrange_efi_to_native(&paddr, &npages);
@@ -204,14 +207,9 @@ static __init void reserve_regions(void)
if (is_normal_ram(md))
early_init_dt_add_memory_arch(paddr, size);

- if (is_reserve_region(md)) {
+ if (resv)
memblock_mark_nomap(paddr, size);
- if (efi_enabled(EFI_DBG))
- pr_cont("*");
- }

- if (efi_enabled(EFI_DBG))
- pr_cont("\n");
}

set_bit(EFI_MEMMAP, &efi.flags);
--
2.7.3