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bootstd: Allow hunting for a bootdev by label

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Add a function to hunt for a bootdev label and find the bootdev produced
by the hunter (or already present).

Add a few extra flags so that we can distinguish between "mmc1", "mmc" and
"1" which all need to be handled differently.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2023-01-17 10:48:09 -07:00
committed by Tom Rini
parent eacc261178
commit 66e3dce787
6 changed files with 195 additions and 5 deletions
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14
include/bootflow.h
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@@ -99,7 +99,10 @@ struct bootflow {
* Internal flags:
* @BOOTFLOWF_SINGLE_DEV: (internal) Just scan one bootdev
* @BOOTFLOWF_SKIP_GLOBAL: (internal) Don't scan global bootmeths
* this uclass
* @BOOTFLOWF_SINGLE_UCLASS: (internal) Keep scanning through all devices in
* this uclass (used with things like "mmc")
* @BOOTFLOWF_SINGLE_MEDIA: (internal) Scan one media device in the uclass (used
* with things like "mmc1")
*/
enum bootflow_flags_t {
BOOTFLOWF_FIXED = 1 << 0,
@@ -113,6 +116,8 @@ enum bootflow_flags_t {
*/
BOOTFLOWF_SINGLE_DEV = 1 << 16,
BOOTFLOWF_SKIP_GLOBAL = 1 << 17,
BOOTFLOWF_SINGLE_UCLASS = 1 << 18,
BOOTFLOWF_SINGLE_MEDIA = 1 << 19,
};
/**
@@ -124,10 +129,17 @@ enum bootflow_flags_t {
*
* @BOOTFLOW_METHF_DHCP_ONLY: Only use dhcp (scripts and EFI)
* @BOOTFLOW_METHF_PXE_ONLY: Only use pxe (PXE boot)
* @BOOTFLOW_METHF_SINGLE_DEV: Scan only a single bootdev (used for labels like
* "3"). This is used if a sequence number is provided instead of a label
* @BOOTFLOW_METHF_SINGLE_UCLASS: Scan all bootdevs in this one uclass (used
* with things like "mmc"). If this is not set, then the bootdev has an integer
* value in the label (like "mmc2")
*/
enum bootflow_meth_flags_t {
BOOTFLOW_METHF_DHCP_ONLY = 1 << 0,
BOOTFLOW_METHF_PXE_ONLY = 1 << 1,
BOOTFLOW_METHF_SINGLE_DEV = 1 << 2,
BOOTFLOW_METHF_SINGLE_UCLASS = 1 << 3,
};
/**