linux/drivers/firmware
Andy Shevchenko 2a5b4ccf0d efi/earlycon: Speed up scrolling by disregarding empty space
Currently the scroll copies the full screen which is slow on high
resolution displays. At the same time, most of the screen is an empty
space which has no need to be copied over and over.

Optimize the scrolling algorithm by caching the x coordinates of the
last printed lines and scroll in accordance with the maximum x in that
cache.

On my Microsoft Surface Book (the first version) this produces a
significant speedup of the console 90 seconds vs. 168 seconds with the
kernel command line having

	ignore_loglevel earlycon=efifb keep_bootcon

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2023-01-10 15:16:12 +01:00
..
arm_ffa firmware: arm_ffa: Move constants to header file 2022-12-01 15:51:31 +00:00
arm_scmi firmware: arm_scmi: Fix deferred_tx_wq release on error paths 2022-11-01 11:36:20 +00:00
broadcom firmware/nvram: bcm47xx: support init from IO memory 2022-11-09 10:27:10 -08:00
cirrus firmware: cs_dsp: Switch to using namespaced exports 2022-11-25 14:36:56 +00:00
efi efi/earlycon: Speed up scrolling by disregarding empty space 2023-01-10 15:16:12 +01:00
google firmware: google: fix a NULL vs IS_ERR() check in cbmem_entry_probe() 2022-11-23 20:03:14 +01:00
imx firmware: imx: scu-pd: add missed USB_1_PHY pd 2022-10-24 10:05:27 +08:00
meson
psci ARM: driver updates for 6.1 2022-10-06 11:04:57 -07:00
smccc printk: stop including cache.h from printk.h 2022-05-13 07:20:07 -07:00
tegra tegra: mark BPMP driver as little-endian only 2022-11-23 14:21:23 +01:00
xilinx remoteproc updates for v6.2 2022-12-21 09:37:14 -08:00
arm_scpi.c firmware: arm_scpi: Ensure scpi_info is not assigned if the probe fails 2022-07-04 14:28:42 +01:00
arm_sdei.c
dmi_scan.c firmware: dmi: Fortify entry point length checks 2022-09-23 14:53:14 +02:00
dmi-id.c driver core: make struct class.dev_uevent() take a const * 2022-11-24 17:12:15 +01:00
dmi-sysfs.c firmware: dmi-sysfs: Fix memory leak in dmi_sysfs_register_handle 2022-05-19 18:56:56 +02:00
edd.c edd: simplify the check of 'attr->test' in edd_populate_dir() 2022-05-19 18:57:04 +02:00
iscsi_ibft_find.c
iscsi_ibft.c
Kconfig sound updates for 5.19-rc1 2022-05-25 16:55:16 -07:00
Makefile Follow-up tweaks for the EFI changes in v5.19 2022-06-03 13:39:30 -07:00
memmap.c
mtk-adsp-ipc.c firmware: mediatek: Use meaningful names for mbox 2022-06-22 13:39:30 +01:00
pcdp.c
pcdp.h
qcom_scm-legacy.c firmware: qcom_scm-legacy: correct kerneldoc 2022-06-25 22:04:31 -05:00
qcom_scm-smc.c
qcom_scm.c firmware: qcom_scm: Add bw voting support to the SCM interface 2022-06-29 21:48:32 -05:00
qcom_scm.h firmware: qcom: scm: remove unused __qcom_scm_init declaration 2022-09-13 15:14:54 -05:00
qemu_fw_cfg.c
raspberrypi.c Char/Misc driver changes for 6.2-rc1 2022-12-16 03:49:24 -08:00
scpi_pm_domain.c
stratix10-rsu.c firmware: stratix10-rsu: extend RSU driver to get DCMF status 2022-07-14 16:55:09 +02:00
stratix10-svc.c firmware: stratix10-svc: To support a command ATF Get Version 2022-07-14 16:55:09 +02:00
sysfb_simplefb.c firmware: sysfb: Make sysfb_create_simplefb() return a pdev pointer 2022-06-29 09:51:31 +02:00
sysfb.c fbdev/vga16fb: Create EGA/VGA devices in sysfb code 2022-07-19 13:19:11 +02:00
ti_sci.c firmware: ti_sci: Use devm_bitmap_zalloc when applicable 2022-11-03 21:45:10 -05:00
ti_sci.h
trusted_foundations.c
turris-mox-rwtm.c hwrng: core - treat default_quality as a maximum and default to 1024 2022-11-18 16:59:34 +08:00