diff options
| author | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2019-01-02 08:08:56 +0200 |
|---|---|---|
| committer | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2019-01-07 10:37:48 +0000 |
| commit | 954ed5500c2d8d2284b65689b720ca1530c28b25 (patch) | |
| tree | c5add68c3f4234aaad80c73f378dbe149f3d1bc6 /src/drivers | |
| parent | 4cc9b6c78d334bdf3f3e27227eb2ce5bba8b4ef5 (diff) | |
usbdebug: Probe for gadget only once
The first stage attempting to initialise usbdebug
gadget will leave it marked as non-present if none
is detected. This allows further stages to bypass
usbdebug init sequence.
Change-Id: I1491d7fab3c89f210fb03b32481f697bc7a1d1e6
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/30622
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Diffstat (limited to 'src/drivers')
| -rw-r--r-- | src/drivers/usb/ehci_debug.c | 12 | ||||
| -rw-r--r-- | src/drivers/usb/ehci_debug.h | 1 |
2 files changed, 13 insertions, 0 deletions
diff --git a/src/drivers/usb/ehci_debug.c b/src/drivers/usb/ehci_debug.c index 4987523f78..6d0339b739 100644 --- a/src/drivers/usb/ehci_debug.c +++ b/src/drivers/usb/ehci_debug.c @@ -435,6 +435,7 @@ static int usbdebug_init_(unsigned ehci_bar, unsigned offset, struct ehci_debug_ memset(info, 0, sizeof (*info)); info->ehci_base = (void *)ehci_bar; info->ehci_debug = (void *)(ehci_bar + offset); + info->ep_pipe[0].status |= DBGP_EP_NOT_PRESENT; dprintk(BIOS_INFO, "ehci_bar: 0x%x debug_offset 0x%x\n", ehci_bar, offset); @@ -574,6 +575,8 @@ try_next_port: goto err; } + info->ep_pipe[0].status &= ~DBGP_EP_NOT_PRESENT; + return 0; err: /* Things didn't work so remove my claim */ @@ -610,6 +613,12 @@ static int dbgp_enabled(void) return (globals->status & DBGP_EP_ENABLED); } +static int dbgp_not_present(void) +{ + struct dbgp_pipe *globals = &dbgp_ehci_info()->ep_pipe[DBGP_SETUP_EP0]; + return (globals->status & DBGP_EP_NOT_PRESENT); +} + int dbgp_try_get(struct dbgp_pipe *pipe) { struct dbgp_pipe *globals = &dbgp_ehci_info()->ep_pipe[DBGP_SETUP_EP0]; @@ -661,6 +670,9 @@ int usbdebug_hw_init(bool force) if (dbgp_enabled() && !force) return 0; + if (dbgp_not_present() && !force) + return -1; + /* Do not attempt slow gadget init in postcar. */ if (ENV_POSTCAR) return -1; diff --git a/src/drivers/usb/ehci_debug.h b/src/drivers/usb/ehci_debug.h index 2a1629df40..efb27666bc 100644 --- a/src/drivers/usb/ehci_debug.h +++ b/src/drivers/usb/ehci_debug.h @@ -31,6 +31,7 @@ void ehci_debug_select_port(unsigned int port); #define DBGP_EP_VALID (1<<0) #define DBGP_EP_ENABLED (1<<1) #define DBGP_EP_BUSY (1<<2) +#define DBGP_EP_NOT_PRESENT (1<<3) #define DBGP_EP_STATMASK (DBGP_EP_VALID | DBGP_EP_ENABLED) #define DBGP_MAX_ENDPOINTS 4 |