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The display command uses the plan9ports devdraw device, and the 9fans devdraw Go support, to allow a display of the state of the buffer. Currently, a user can do something like this: Set up so devdraw command is in $PATH PLAN9=/Users/rminnich/Documents/plan9 export PLAN9 PATH=$PATH:$PLAN9/bin export PATH Now run utk utk ~/Downloads/SBIOS_P5043_PG535_SKU_893_02.02.03_rel_prod.rom \ display start \ remove_dxes_except list \ display end The result will be two windows, one showing before, and one after. The plan is that this can get fancier: utk ~/Downloads/SBIOS_P5043_PG535_SKU_893_02.02.03_rel_prod.rom \ display start \ remove Http.* \ display nohttp \ remove_dxes_except list \ display end Also, note, although we only set up one pixel for each point, devdraw is nice to you: if you grow the window it grows the display of ROM. Also, the border is necessery for OSX with its rounded edges. Signed-off-by: Ronald G. Minnich <[email protected]>
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| @@ -0,0 +1,125 @@ | ||
| // Copyright 2018 the LinuxBoot Authors. All rights reserved | ||
| // Use of this source code is governed by a BSD-style | ||
| // license that can be found in the LICENSE file. | ||
|
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| package visitors | ||
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| import ( | ||
| "bytes" | ||
| "fmt" | ||
| "io" | ||
| "os" | ||
| "time" | ||
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| "9fans.net/go/draw" | ||
| "github.com/linuxboot/fiano/pkg/uefi" | ||
| ) | ||
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| // Display the memory map with used areas in red. | ||
| // This can be called multiple times. | ||
| // The argument is the display name. | ||
| type Display struct { | ||
| // Input | ||
| Predicate func(f uefi.Firmware) bool | ||
| Name string | ||
| // logs are written to this writer. | ||
| W io.Writer | ||
| } | ||
|
|
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| func (v *Display) printf(format string, a ...interface{}) { | ||
| if v.W != nil { | ||
| fmt.Fprintf(v.W, format, a...) | ||
| } | ||
| } | ||
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| // Run wraps Visit and performs some setup and teardown tasks. | ||
| func (v *Display) Run(f uefi.Firmware) error { | ||
| return f.Apply(v) | ||
| } | ||
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| // Visit applies the Display visitor to any Firmware type. | ||
| // The name "end" has meaning. It will force an assemble of the image, | ||
| // which should cleanup f.Buf(), and it will not return. | ||
| // If it returns, utk will exit and you will see no images. | ||
| // Using "end" this way lets us hold off on using goroutines and | ||
| // waitgroups for now. | ||
| func (v *Display) Visit(f uefi.Firmware) error { | ||
| switch f := f.(type) { | ||
| case *uefi.BIOSRegion: | ||
| if v.Name == "end" { | ||
| a := &Assemble{} | ||
| // Assemble the binary to make sure the top level buffer is correct | ||
| if err := f.Apply(a); err != nil { | ||
| return err | ||
| } | ||
| } | ||
| b := bytes.NewBuffer(f.Buf()) | ||
| // The display is 256KiB x however many rows we need. | ||
| // So that's len(buf) / (256x1024) | ||
| squareSize := 1 | ||
| wid := 100 + 256*squareSize | ||
| ht := 100 + squareSize*b.Len()/(wid*1024) | ||
| // Initialize the draw context with a dynamically-sized window | ||
| d, err := draw.Init(nil, "", v.Name, fmt.Sprintf("256x%d", ht)) | ||
| if err != nil { | ||
| return fmt.Errorf("failed to initialize draw: %w", err) | ||
| } | ||
|
|
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| // Initialize mouse control using drawfcall | ||
| // mousectl, err := drawfcall.InitMouse("", d.ScreenImage) | ||
| //if err != nil { | ||
| //log.Fatalf("failed to initialize mouse: %v", err) | ||
| //} | ||
|
|
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| // Determine the window size from the screen image | ||
| winWidth := wid | ||
| winHeight := ht | ||
|
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| // Get color images for red and green | ||
| grn := d.AllocImageMix(draw.Green, draw.Opaque) | ||
| red := d.AllocImageMix(draw.Red, draw.Opaque) | ||
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| var buf [uefi.RegionBlockSize]byte | ||
| for y := 0; y < winHeight; y++ { | ||
| for x := 0; x < winWidth; x++ { | ||
| // Calculate the top-left corner of the square | ||
| pt := draw.Pt(50+x*squareSize, 50+y*squareSize) | ||
| rect := draw.Rect(pt.X, pt.Y, pt.X+squareSize, pt.Y+squareSize) | ||
| n, err := b.Read(buf[:]) | ||
| if err != nil && err != io.EOF { | ||
| return fmt.Errorf("reading buffer with non-eof error:%w", err) | ||
| } | ||
|
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| // Alternate colors between red and yellow | ||
| if uefi.IsErased(buf[:n], 0) { | ||
| d.ScreenImage.Draw(rect, grn, nil, draw.ZP) | ||
| } else { | ||
| d.ScreenImage.Draw(rect, red, nil, draw.ZP) | ||
| } | ||
| } | ||
| } | ||
|
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| d.Flush() | ||
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| // What a hack. But it will let us test the idea, | ||
| // until we're sure it is right. | ||
| for v.Name == "end" { | ||
| time.Sleep(40 * time.Second) | ||
| } | ||
|
|
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| } | ||
|
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| return nil | ||
| } | ||
|
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| func init() { | ||
| RegisterCLI("display", "display the memory map", 1, func(args []string) (uefi.Visitor, error) { | ||
| if len(args) != 1 { | ||
| return nil, fmt.Errorf("usage: display <name>:%w", os.ErrInvalid) | ||
| } | ||
| return &Display{ | ||
| Name: args[0], | ||
| W: os.Stdout, | ||
| }, nil | ||
| }) | ||
| } |