Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 43db76f4 authored by Christophe Leroy's avatar Christophe Leroy Committed by Michael Ellerman
Browse files

powerpc/8xx: Add microcode patch to move SMC parameter RAM. 



Some SCC functions like the QMC requires an extended parameter RAM.
On modern 8xx (ie 866 and 885), SPI area can already be relocated,
allowing the use of those functions on SCC2. But SCC3 and SCC4
parameter RAM collide with SMC1 and SMC2 parameter RAMs.

This patch adds microcode to allow the relocation of both SMC1 and
SMC2, and relocate them at offsets 0x1ec0 and 0x1fc0.
Those offsets are by default for the CPM1 DSP1 and DSP2, but there
is no kernel driver using them at the moment so this area can be
reused.

This microcode is provided by Freescale/NXP in Engineering Bulletin
EB662 ("MPC8xx I2C/SPI and SMC Relocation Microcode Packages")
dated 2006. The binary code is public. The source is not available.

Signed-off-by: default avatarChristophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent c3eec5d7

arch/powerpc/platforms/8xx/Kconfig

+7 −0
Original line number Diff line number Diff line
@@ -157,6 +157,13 @@ config I2C_SPI_SMC1_UCODE_PATCH 
	help

	  Help not implemented yet, coming soon.



config SMC_UCODE_PATCH

	bool "SMC relocation patch"

	help

	  This microcode relocates SMC1 and SMC2 parameter RAMs at

	  offset 0x1ec0 and 0x1fc0 to allow extended parameter RAM

	  for SCC3 and SCC4.



endchoice



config UCODE_PATCH

arch/powerpc/platforms/8xx/micropatch.c

+97 −0
Original line number Diff line number Diff line
@@ -234,6 +234,94 @@ static uint patch_2f00[] __initdata = { 
static uint patch_2e00[] __initdata = {};

#endif



/*

 * SMC relocation patch arrays.

 */



#ifdef CONFIG_SMC_UCODE_PATCH



static char patch_name[] __initdata = "SMC";



static struct patch_params patch_params __initdata = {

	2, 0x8080, 0x8088,

};



static uint patch_2000[] __initdata = {

	0x3fff0000, 0x3ffd0000, 0x3ffb0000, 0x3ff90000,

	0x5fefeff8, 0x5f91eff8, 0x3ff30000, 0x3ff10000,

	0x3a11e710, 0xedf0ccb9, 0xf318ed66, 0x7f0e5fe2,

	0x7fedbb38, 0x3afe7468, 0x7fedf4d8, 0x8ffbb92d,

	0xb83b77fd, 0xb0bb5eb9, 0xdfda7fed, 0x90bde74d,

	0x6f0dcbd3, 0xe7decfed, 0xcb50cfed, 0xcfeddf6d,

	0x914d4f74, 0x5eaedfcb, 0x9ee0e7df, 0xefbb6ffb,

	0xe7ef7f0e, 0x9ee57fed, 0xebb7effa, 0xeb30affb,

	0x7fea90b3, 0x7e0cf09f, 0xbffff318, 0x5fffdfff,

	0xac35efea, 0x7fce1fc1, 0xe2ff5fbd, 0xaffbe2ff,

	0x5fbfaffb, 0xf9a87d0f, 0xaef8770f, 0x7d0fb0a2,

	0xeffbbfff, 0xcfef5fba, 0x7d0fbfff, 0x5fba4cf8,

	0x7fddd09b, 0x49f847fd, 0x7efdf097, 0x7fedfffd,

	0x7dfdf093, 0xef7e7e1e, 0x5fba7f0e, 0x3a11e710,

	0xedf0cc87, 0xfb18ad0a, 0x1f85bbb8, 0x74283b7e,

	0x7375e4bb, 0x2ab64fb8, 0x5c7de4bb, 0x32fdffbf,

	0x5f0843f8, 0x7ce3e1bb, 0xe74f7ded, 0x6f0f4fe8,

	0xc7ba32be, 0x73f2efeb, 0x600b4f78, 0xe5bb760b,

	0x5388aef8, 0x4ef80b6a, 0xcfef9ee5, 0xabf8751f,

	0xefef5b88, 0x741f4fe8, 0x751e760d, 0x7fdb70dd,

	0x741cafce, 0xefcc7fce, 0x751e7088, 0x741ce7bb,

	0x334ecfed, 0xafdbefeb, 0xe5bb760b, 0x53ceaef8,

	0xafe8e7eb, 0x4bf8771e, 0x7e007fed, 0x4fcbe2cc,

	0x7fbc3085, 0x7b0f7a0f, 0x34b177fd, 0xb0e75e93,

	0xdf313e3b, 0xaf78741f, 0x741f30cc, 0xcfef5f08,

	0x741f3e88, 0xafb8771e, 0x5f437fed, 0x0bafe2cc,

	0x741ccfec, 0xe5ca53a9, 0x6fcb4f74, 0x5e89df27,

	0x2a923d14, 0x4b8fdf0c, 0x751f741c, 0x6c1eeffa,

	0xefea7fce, 0x6ffc309a, 0xefec3fca, 0x308fdf0a,

	0xadf85e7a, 0xaf7daefd, 0x5e7adf0a, 0x5e7aafdd,

	0x761f1088, 0x1e7c7efd, 0x3089fffe, 0x4908fb18,

	0x5fffdfff, 0xafbbf0f7, 0x4ef85f43, 0xadf81489,

	0x7a0f7089, 0xcfef5089, 0x7a0fdf0c, 0x5e7cafed,

	0xbc6e780f, 0xefef780f, 0xefef790f, 0xa7f85eeb,

	0xffef790f, 0xefef790f, 0x1489df0a, 0x5e7aadfd,

	0x5f09fffb, 0xe79aded9, 0xeff96079, 0x607ae79a,

	0xded8eff9, 0x60795edb, 0x607acfef, 0xefefefdf,

	0xefbfef7f, 0xeeffedff, 0xebffe7ff, 0xafefafdf,

	0xafbfaf7f, 0xaeffadff, 0xabffa7ff, 0x6fef6fdf,

	0x6fbf6f7f, 0x6eff6dff, 0x6bff67ff, 0x2fef2fdf,

	0x2fbf2f7f, 0x2eff2dff, 0x2bff27ff, 0x4e08fd1f,

	0xe5ff6e0f, 0xaff87eef, 0x7e0ffdef, 0xf11f6079,

	0xabf8f51e, 0x7e0af11c, 0x37cfae16, 0x7fec909a,

	0xadf8efdc, 0xcfeae52f, 0x7d0fe12b, 0xf11c6079,

	0x7e0a4df8, 0xcfea5ea0, 0x7d0befec, 0xcfea5ea2,

	0xe522efdc, 0x5ea2cfda, 0x4e08fd1f, 0x6e0faff8,

	0x7c1f761f, 0xfdeff91f, 0x6079abf8, 0x761cee00,

	0xf91f2bfb, 0xefefcfec, 0xf91f6079, 0x761c27fb,

	0xefdf5e83, 0xcfdc7fdd, 0x50f84bf8, 0x47fd7c1f,

	0x761ccfcf, 0x7eef7fed, 0x7dfd70ef, 0xef7e7f1e,

	0x771efb18, 0x6079e722, 0xe6bbe5bb, 0x2e66e5bb,

	0x600b2ee1, 0xe2bbe2bb, 0xe2bbe2bb, 0x2f5ee2bb,

	0xe2bb2ff9, 0x6079e2bb,

};



static uint patch_2f00[] __initdata = {

	0x30303030, 0x3e3e3030, 0xaf79b9b3, 0xbaa3b979,

	0x9693369f, 0x79f79777, 0x97333fff, 0xfb3b9e9f,

	0x79b91d11, 0x9e13f3ff, 0x3f9b6bd9, 0xe173d136,

	0x695669d1, 0x697b3daf, 0x79b93a3a, 0x3f979f91,

	0x379ff976, 0xf99777fd, 0x9779737d, 0xe9d6bbf9,

	0xbfffd9df, 0x97f7fd97, 0x6f7b9bff, 0xf9bd9683,

	0x397db973, 0xd97b3b9f, 0xd7f9f733, 0x9993bb9e,

	0xe1f9ef93, 0x73773337, 0xb936917d, 0x11f87379,

	0xb979d336, 0x8b7ded73, 0x1b7d9337, 0x31f3f22f,

	0x3f2327ee, 0xeeeeeeee, 0xeeeeeeee, 0xeeeeeeee,

	0xeeeeee4b, 0xf4fbdbd2, 0x58bb1878, 0x577fdfd2,

	0xd573b773, 0xf7374b4f, 0xbdbd25b8, 0xb177d2d1,

	0x7376856b, 0xbfdd687b, 0xdd2fff8f, 0x78ffff8f,

	0xf22f0000,

};



static uint patch_2e00[] __initdata = {};

#endif



static void __init cpm_write_patch(cpm8xx_t *cp, int offset, uint *patch, int len)

{

	if (!len)
@@ -270,6 +358,15 @@ void __init cpm_load_patch(cpm8xx_t *cp) 
		}

	}



	if (IS_ENABLED(CONFIG_SMC_UCODE_PATCH)) {

		smc_uart_t *smp;



		smp = (smc_uart_t *)&cp->cp_dparam[PROFF_SMC1];

		out_be16(&smp->smc_rpbase, 0x1ec0);

		smp = (smc_uart_t *)&cp->cp_dparam[PROFF_SMC2];

		out_be16(&smp->smc_rpbase, 0x1fc0);

	}



	out_be16(&cp->cp_cpmcr1, patch_params.cpmcr1);

	out_be16(&cp->cp_cpmcr2, patch_params.cpmcr2);

	out_be16(&cp->cp_cpmcr3, patch_params.cpmcr3);