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powerpc: Add device-tree model to the hardware description

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Add the model of the machine we're on to the hardware description, which
is printed at boot and in case of an oops.

eg: Hardware name: IBM,8247-22L

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220930082709.55830-4-mpe@ellerman.id.au
This commit is contained in:
Michael Ellerman 2022-09-30 18:27:07 +10:00
parent 48b7019b6a
commit 5412297079
1 changed files with 19 additions and 0 deletions
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19
arch/powerpc/kernel/prom.c
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@ -715,6 +715,23 @@ static void __init tm_init(void)
static void tm_init(void) { }
#endif /* CONFIG_PPC_TRANSACTIONAL_MEM */
static int __init
early_init_dt_scan_model(unsigned long node, const char *uname,
int depth, void *data)
{
const char *prop;
if (depth != 0)
return 0;
prop = of_get_flat_dt_prop(node, "model", NULL);
if (prop)
seq_buf_printf(&ppc_hw_desc, "%s ", prop);
/* break now */
return 1;
}
#ifdef CONFIG_PPC64
static void __init save_fscr_to_task(void)
{
@ -743,6 +760,8 @@ void __init early_init_devtree(void *params)
if (!early_init_dt_verify(params))
panic("BUG: Failed verifying flat device tree, bad version?");
of_scan_flat_dt(early_init_dt_scan_model, NULL);
#ifdef CONFIG_PPC_RTAS
/* Some machines might need RTAS info for debugging, grab it now. */
of_scan_flat_dt(early_init_dt_scan_rtas, NULL);