From a59d7c99548f2268a6b8429d9c5a87fe1790a993 Mon Sep 17 00:00:00 2001
From: Christopher Haster <geky@geky.net>
Date: Sun, 11 Aug 2024 23:48:47 -0500
Subject: [PATCH] emubd: Dropped lfs_emubd_cksum/bdcksum

One of these was missed during the crc -> cksum rename, so it wouldn't
have even linked correctly. Rather than fixing it I'm just going to drop
these functions.

At some point they were useful for debugging, but with emubd's disk
mirroring and dbgblock.py, it's both easier and more reliable to
find checksums with external scripts.
---
 bd/lfs_emubd.c | 54 --------------------------------------------------
 bd/lfs_emubd.h |  7 -------
 2 files changed, 61 deletions(-)

diff --git a/bd/lfs_emubd.c b/bd/lfs_emubd.c
index a7517553..c14b2c59 100644
--- a/bd/lfs_emubd.c
+++ b/bd/lfs_emubd.c
@@ -999,60 +999,6 @@ int lfs_emubd_seed(const struct lfs_config *cfg, uint32_t seed) {
     return 0;
 }
 
-static int lfs_emubd_rawcksum(const struct lfs_config *cfg,
-        lfs_block_t block, uint32_t *cksum) {
-    lfs_emubd_t *bd = cfg->context;
-
-    // check if block is valid
-    LFS_ASSERT(block < cfg->block_count);
-
-    // checksum the block
-    uint32_t cksum_ = 0;
-    const lfs_emubd_block_t *b = bd->blocks[block];
-    if (b) {
-        cksum_ = lfs_crc32c(cksum_, b->data, cfg->block_size);
-    } else {
-        uint8_t erase_value = (bd->cfg->erase_value != -1)
-                ? bd->cfg->erase_value
-                : 0;
-        for (lfs_size_t i = 0; i < cfg->block_size; i++) {
-            cksum_ = lfs_crc32c(cksum_, &erase_value, 1);
-        }
-    }
-    *cksum = cksum_;
-
-    return 0;
-}
-
-int lfs_emubd_cksum(const struct lfs_config *cfg,
-        lfs_block_t block, uint32_t *cksum) {
-    LFS_EMUBD_TRACE("lfs_emubd_cksum(%p, %"PRIu32", %p)",
-            (void*)cfg, block, cksum);
-    int err = lfs_emubd_rawcksum(cfg, block, cksum);
-    LFS_EMUBD_TRACE("lfs_emubd_cksum -> %d", err);
-    return err;
-}
-
-int lfs_emubd_bdcrc(const struct lfs_config *cfg, uint32_t *cksum) {
-    LFS_EMUBD_TRACE("lfs_emubd_bdcksum(%p, %p)", (void*)cfg, cksum);
-
-    uint32_t cksum_ = 0;
-    for (lfs_block_t i = 0; i < cfg->block_count; i++) {
-        uint32_t i_cksum;
-        int err = lfs_emubd_rawcksum(cfg, i, &i_cksum);
-        if (err) {
-            LFS_EMUBD_TRACE("lfs_emubd_bdcksum -> %d", err);
-            return err;
-        }
-
-        cksum_ = lfs_crc32c(cksum_, &i_cksum, sizeof(uint32_t));
-    }
-    *cksum = cksum_;
-
-    LFS_EMUBD_TRACE("lfs_emubd_bdcksum -> %d", 0);
-    return 0;
-}
-
 lfs_emubd_sio_t lfs_emubd_readed(const struct lfs_config *cfg) {
     LFS_EMUBD_TRACE("lfs_emubd_readed(%p)", (void*)cfg);
     lfs_emubd_t *bd = cfg->context;
diff --git a/bd/lfs_emubd.h b/bd/lfs_emubd.h
index aadb843a..d0812480 100644
--- a/bd/lfs_emubd.h
+++ b/bd/lfs_emubd.h
@@ -193,13 +193,6 @@ int lfs_emubd_sync(const struct lfs_config *cfg);
 // Set the current prng state
 int lfs_emubd_seed(const struct lfs_config *cfg, uint32_t seed);
 
-// A checksum of a block for debugging purposes
-int lfs_emubd_cksum(const struct lfs_config *cfg,
-        lfs_block_t block, uint32_t *cksum);
-
-// A checksum of the entire block device for debugging purposes
-int lfs_emubd_bdcksum(const struct lfs_config *cfg, uint32_t *cksum);
-
 // Get total amount of bytes read
 lfs_emubd_sio_t lfs_emubd_readed(const struct lfs_config *cfg);