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| author | Philippe Mathieu-Daudé <philmd@linaro.org> | 2024-06-17 17:57:54 +0200 |
|---|---|---|
| committer | Philippe Mathieu-Daudé <philmd@linaro.org> | 2024-07-05 23:50:12 +0200 |
| commit | 6d0dc86070d6b65caaf2c96d7254ead5fc519203 (patch) | |
| tree | f56353c8b8d0b9b8b11ed6792f7e3748b847cb1d /hw/sd/sd.c | |
| parent | 3baae281501f6eea879bff2200ca15ee2ff637be (diff) | |
| download | focaccia-qemu-6d0dc86070d6b65caaf2c96d7254ead5fc519203.tar.gz focaccia-qemu-6d0dc86070d6b65caaf2c96d7254ead5fc519203.zip | |
hw/sd/sdcard: Generate random RCA value
Rather than using the obscure 0x4567 magic value, use a real random one. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Tested-by: Cédric Le Goater <clg@redhat.com> Reviewed-by: Cédric Le Goater <clg@redhat.com> Tested-by: Andrew Jeffery <andrew@codeconstruct.com.au> Message-Id: <20240702140842.54242-5-philmd@linaro.org>
Diffstat (limited to 'hw/sd/sd.c')
| -rw-r--r-- | hw/sd/sd.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/hw/sd/sd.c b/hw/sd/sd.c index 552957b2e5..b158402704 100644 --- a/hw/sd/sd.c +++ b/hw/sd/sd.c @@ -46,6 +46,7 @@ #include "qemu/error-report.h" #include "qemu/timer.h" #include "qemu/log.h" +#include "qemu/guest-random.h" #include "qemu/module.h" #include "sdmmc-internal.h" #include "trace.h" @@ -515,9 +516,10 @@ static void sd_set_csd(SDState *sd, uint64_t size) /* Relative Card Address register */ -static void sd_set_rca(SDState *sd) +static void sd_set_rca(SDState *sd, uint16_t value) { - sd->rca += 0x4567; + trace_sdcard_set_rca(value); + sd->rca = value; } static uint16_t sd_req_get_rca(SDState *s, SDRequest req) @@ -1212,11 +1214,14 @@ static sd_rsp_type_t sd_cmd_ALL_SEND_CID(SDState *sd, SDRequest req) /* CMD3 */ static sd_rsp_type_t sd_cmd_SEND_RELATIVE_ADDR(SDState *sd, SDRequest req) { + uint16_t random_rca; + switch (sd->state) { case sd_identification_state: case sd_standby_state: sd->state = sd_standby_state; - sd_set_rca(sd); + qemu_guest_getrandom_nofail(&random_rca, sizeof(random_rca)); + sd_set_rca(sd, random_rca); return sd_r6; default: |